summaryrefslogtreecommitdiff
path: root/doc/source/configuration/settings.rst
blob: e01f30eb2018a882cb9fd21dd06cb587c7ecb0f1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
.. _install-settings:

==================
Settings Reference
==================

Introduction
============

Horizon's settings broadly fall into three categories:

* `General Settings`_: this includes visual settings like the modal backdrop
  style, bug url and theme configuration, as well as settings that affect every
  service, such as page sizes on API requests.
* `Service-specific Settings`_: Many services that Horizon consumes, such
  as Nova and Neutron, don't advertise their capabilities via APIs, so Horizon
  carries configuration for operators to enable or disable many items. This
  section covers all settings that are specific to a single service.
* `Django Settings`_, which are common to all Django applications. The only
  ones documented here are those that Horizon alters by default; however, you
  should read the `Django settings documentation
  <https://docs.djangoproject.com/en/dev/topics/settings/>`_ to see the other
  options available to you.

To modify your settings, you have two options:

* **Preferred:** Add ``.py`` settings snippets to the
  ``openstack_dashboard/local/local_settings.d/`` directory. Several example
  files (appended with ``.example``) can be found there. These must start
  with an underscore, and are evaluated alphabetically, after
  ``local_settings.py``.
* Modify your ``openstack_dashboard/local/local_settings.py``. There is an
  file found at ``openstack_dashboard/local/local_settings.py.example``.

General Settings
================

.. _angular_features:

ANGULAR_FEATURES
----------------

.. versionadded:: 10.0.0(Newton)

Default:

.. code-block:: python

    {
        'images_panel': True,
        'key_pairs_panel': False,
        'flavors_panel': False,
        'domains_panel': False,
        'users_panel': False,
        'groups_panel': False,
        'roles_panel': True
    }

A dictionary of currently available AngularJS features. This allows simple
toggling of legacy or rewritten features, such as new panels, workflows etc.

.. note::

    If you toggle ``domains_panel`` to ``True``, you also need to enable the
    setting of `OPENSTACK_KEYSTONE_DEFAULT_DOMAIN`_ and add
    `OPENSTACK_KEYSTONE_DEFAULT_DOMAIN`_ to `REST_API_REQUIRED_SETTINGS`_.

API_RESULT_LIMIT
----------------

.. versionadded:: 2012.1(Essex)

Default: ``1000``

The maximum number of objects (e.g. Swift objects or Glance images) to display
on a single page before providing a paging element (a "more" link) to paginate
results.

API_RESULT_PAGE_SIZE
--------------------

.. versionadded:: 2012.2(Folsom)

Default: ``20``

Similar to ``API_RESULT_LIMIT``. This setting controls the number of items
to be shown per page if API pagination support for this exists.

.. _available_themes:

AVAILABLE_THEMES
----------------

.. versionadded:: 9.0.0(Mitaka)

Default:

.. code-block:: python

   AVAILABLE_THEMES = [
        ('default', 'Default', 'themes/default'),
        ('material', 'Material', 'themes/material'),
   ]

This setting tells Horizon which themes to use.

A list of tuples which define multiple themes. The tuple format is
``('{{ theme_name }}', '{{ theme_label }}', '{{ theme_path }}')``.

The ``theme_name`` is the name used to define the directory which
the theme is collected into, under ``/{{ THEME_COLLECTION_DIR }}``.
It also specifies the key by which the selected theme is stored in
the browser's cookie.

The ``theme_label`` is the user-facing label that is shown in the
theme picker.  The theme picker is only visible if more than one
theme is configured, and shows under the topnav's user menu.

By default, the ``theme path`` is the directory that will serve as
the static root of the theme and the entire contents of the directory
is served up at ``/{{ THEME_COLLECTION_DIR }}/{{ theme_name }}``.
If you wish to include content other than static files in a theme
directory, but do not wish that content to be served up, then you
can create a sub directory named ``static``. If the theme folder
contains a sub-directory with the name ``static``, then
``static/custom/static`` will be used as the root for the content
served at ``/static/custom``.

The static root of the theme folder must always contain a _variables.scss
file and a _styles.scss file.  These must contain or import all the
bootstrap and horizon specific variables and styles which are used to style
the GUI. For example themes, see: /horizon/openstack_dashboard/themes/

Horizon ships with two themes configured. 'default' is the default theme,
and 'material' is based on Google's Material Design.

.. _custom_theme_path:

CUSTOM_THEME_PATH
-----------------

.. versionadded:: 2015.1(Kilo)

.. deprecated:: 9.0.0(Mitaka)

  Themes are now controlled by `AVAILABLE_THEMES`_.

Default: ``"themes/default"``

This setting tells Horizon to use a directory as a custom theme.

By default, this directory will serve as the static root of the theme
and the entire contents of the directory will be served up at
``/static/custom``.  If you wish to include content other than static
files in a theme directory, but do not wish that content to be served up,
then you can create a sub directory named ``static``. If the theme folder
contains a sub-directory with the name ``static``, then
``static/custom/static`` will be used as the root for the content
served at ``/static/custom``.

The static root of the theme folder must always contain a _variables.scss
file and a _styles.scss file.  These must contain or import all the
bootstrap and horizon specific variables and styles which are used to style
the GUI. For example themes, see: /horizon/openstack_dashboard/themes/

Horizon ships with one alternate theme based on Google's Material Design.  To
use the alternate theme, set your CUSTOM_THEME_PATH to ``themes/material``.

DEFAULT_THEME
-------------

.. versionadded:: 9.0.0(Mitaka)

Default: ``"default"``

This setting tells Horizon which theme to use if the user has not
yet selected a theme through the theme picker and therefore set the
cookie value. This value represents the ``theme_name`` key that is
used from `AVAILABLE_THEMES`_.  To use this setting, the theme must
also be configured inside of ``AVAILABLE_THEMES``. Your default theme
must be configured as part of `SELECTABLE_THEMES`_.  If it is not, then
your ``DEFAULT_THEME`` will default to the first theme in
``SELECTABLE_THEMES``.

DEFAULT_THEME_PATH
------------------

.. versionadded:: 8.0.0(Liberty)

.. deprecated:: 9.0.0(Mitaka)

  Themes are now controlled by `AVAILABLE_THEMES`_.

Default: ``"themes/default"``

This setting allows Horizon to collect an additional theme during static
collection and be served up via /static/themes/default.  This is useful
if CUSTOM_THEME_PATH inherits from another theme (like 'default').

If DEFAULT_THEME_PATH is the same as CUSTOM_THEME_PATH, then collection
is skipped and /static/themes will not exist.

DISALLOW_IFRAME_EMBED
---------------------

.. versionadded:: 8.0.0(Liberty)

Default: ``True``

This setting can be used to defend against Clickjacking and prevent Horizon from
being embedded within an iframe. Legacy browsers are still vulnerable to a
Cross-Frame Scripting (XFS) vulnerability, so this option allows extra security
hardening where iframes are not used in deployment. When set to true, a
``"frame-buster"`` script is inserted into the template header that prevents the
web page from being framed and therefore defends against clickjacking.

For more information see: http://tinyurl.com/anticlickjack

.. note::

  If your deployment requires the use of iframes, you can set this setting to
  ``False`` to exclude the frame-busting code and allow iframe embedding.

DROPDOWN_MAX_ITEMS
------------------

.. versionadded:: 2015.1(Kilo)

Default: ``30``

This setting sets the maximum number of items displayed in a dropdown.
Dropdowns that limit based on this value need to support a way to observe
the entire list.

FILTER_DATA_FIRST
-----------------

.. versionadded:: 10.0.0(Newton)

Default:

.. code-block:: python

    {
        'admin.instances': False,
        'admin.images': False,
        'admin.networks': False,
        'admin.routers': False,
        'admin.volumes': False
    }

If the dict key-value is True, when the view loads, an empty table will be
rendered and the user will be asked to provide a search criteria first (in case
no search criteria was provided) before loading any data.

Examples:

Override the dict:

.. code-block:: python

    {
        'admin.instances': True,
        'admin.images': True,
        'admin.networks': False,
        'admin.routers': False,
        'admin.volumes': False
    }

Or, if you want to turn this on for an specific panel/view do:

.. code-block:: python

    FILTER_DATA_FIRST['admin.instances'] = True

HORIZON_CONFIG
--------------

A dictionary of some Horizon configuration values. These are primarily
separated for historic design reasons.

Default:

.. code-block:: python

    HORIZON_CONFIG = {
        'user_home': 'openstack_dashboard.views.get_user_home',
        'ajax_queue_limit': 10,
        'auto_fade_alerts': {
            'delay': 3000,
            'fade_duration': 1500,
            'types': [
                'alert-success',
                'alert-info'
            ]
        },
        'bug_url': None,
        'help_url': "https://docs.openstack.org/",
        'exceptions': {
            'recoverable': exceptions.RECOVERABLE,
            'not_found': exceptions.NOT_FOUND,
            'unauthorized': exceptions.UNAUTHORIZED
        },
        'modal_backdrop': 'static',
        'angular_modules': [],
        'js_files': [],
        'js_spec_files': [],
        'external_templates': [],
    }

ajax_poll_interval
~~~~~~~~~~~~~~~~~~

.. versionadded:: 2012.1(Essex)

Default: ``2500``

How frequently resources in transition states should be polled for updates,
expressed in milliseconds.

ajax_queue_limit
~~~~~~~~~~~~~~~~

.. versionadded:: 2012.1(Essex)

Default: ``10``

The maximum number of simultaneous AJAX connections the dashboard may try
to make. This is particularly relevant when monitoring a large number of
instances, volumes, etc. which are all actively trying to update/change state.

angular_modules
~~~~~~~~~~~~~~~

.. versionadded:: 2014.2(Juno)

Default: ``[]``

A list of AngularJS modules to be loaded when Angular bootstraps. These modules
are added as dependencies on the root Horizon application ``horizon``.

auto_fade_alerts
~~~~~~~~~~~~~~~~

.. versionadded:: 2013.2(Havana)

Default:

.. code-block:: python

    {
        'delay': 3000,
        'fade_duration': 1500,
        'types': []
    }

If provided, will auto-fade the alert types specified. Valid alert types
include: ['alert-default', 'alert-success', 'alert-info', 'alert-warning',
'alert-danger']  Can also define the delay before the alert fades and the fade
out duration.

bug_url
~~~~~~~

.. versionadded:: 9.0.0(Mitaka)

Default: ``None``

If provided, a "Report Bug" link will be displayed in the site header which
links to the value of this setting (ideally a URL containing information on
how to report issues).

disable_password_reveal
~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2015.1(Kilo)

Default: ``False``

Setting this to True will disable the reveal button for password fields,
including on the login form.

exceptions
~~~~~~~~~~

.. versionadded:: 2012.1(Essex)

Default:

.. code-block:: python

    {
        'unauthorized': [],
        'not_found': [],
        'recoverable': []
    }

A dictionary containing classes of exceptions which Horizon's centralized
exception handling should be aware of. Based on these exception categories,
Horizon will handle the exception and display a message to the user.

help_url
~~~~~~~~

.. versionadded:: 2012.2(Folsom)

Default: ``None``

If provided, a "Help" link will be displayed in the site header which links
to the value of this setting (ideally a URL containing help information).

js_files
~~~~~~~~

.. versionadded:: 2014.2(Juno)

Default: ``[]``

A list of javascript source files to be included in the compressed set of files
that are loaded on every page. This is needed for AngularJS modules that are
referenced in ``angular_modules`` and therefore need to be include in every
page.

js_spec_files
~~~~~~~~~~~~~

.. versionadded:: 2015.1(Kilo)

Default: ``[]``

A list of javascript spec files to include for integration with the Jasmine
spec runner. Jasmine is a behavior-driven development framework for testing
JavaScript code.

modal_backdrop
~~~~~~~~~~~~~~

.. versionadded:: 2014.2(Kilo)

Default: ``"static"``

Controls how bootstrap backdrop element outside of modals looks and feels.
Valid values are ``"true"`` (show backdrop element outside the modal, close
the modal after clicking on backdrop), ``"false"`` (do not show backdrop
element, do not close the modal after clicking outside of it) and ``"static"``
(show backdrop element outside the modal, do not close the modal after
clicking on backdrop).

password_autocomplete
~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2013.1(Grizzly)

Default: ``"off"``

Controls whether browser autocompletion should be enabled on the login form.
Valid values are ``"on"`` and ``"off"``.

password_validator
~~~~~~~~~~~~~~~~~~

.. versionadded:: 2012.1(Essex)

Default:

.. code-block:: python

    {
        'regex': '.*',
        'help_text': _("Password is not accepted")
    }

A dictionary containing a regular expression which will be used for password
validation and help text which will be displayed if the password does not
pass validation. The help text should describe the password requirements if
there are any.

This setting allows you to set rules for passwords if your organization
requires them.

simple_ip_management
~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2013.1(Grizzly)

Default: ``True``

Enable or disable simplified floating IP address management.

"Simple" floating IP address management means that the user does not ever have
to select the specific IP addresses they wish to use, and the process of
allocating an IP and assigning it to an instance is one-click.

The "advanced" floating IP management allows users to select the floating IP
pool from which the IP should be allocated and to select a specific IP address
when associating one with an instance.

.. note::

    Currently "simple" floating IP address management is not compatible with
    Neutron. There are two reasons for this. First, Neutron does not support
    the default floating IP pool at the moment. Second, a Neutron floating IP
    can be associated with each VIF and we need to check whether there is only
    one VIF for an instance to enable simple association support.

user_home
~~~~~~~~~

.. versionadded:: 2012.1(Essex)

Default: ``settings.LOGIN_REDIRECT_URL``

This can be either a literal URL path (such as the default), or Python's
dotted string notation representing a function which will evaluate what URL
a user should be redirected to based on the attributes of that user.

MESSAGES_PATH
-------------

.. versionadded:: 9.0.0(Mitaka)

Default: ``None``

The absolute path to the directory where message files are collected.

When the user logins to horizon, the message files collected are processed
and displayed to the user. Each message file should contain a JSON formatted
data and must have a .json file extension. For example:

.. code-block:: python

    {
        "level": "info",
        "message": "message of the day here"
    }

Possible values for level are: ``success``, ``info``, ``warning`` and
``error``.

NG_TEMPLATE_CACHE_AGE
---------------------

.. versionadded:: 10.0.0(Newton)

Angular Templates are cached using this duration (in seconds) if `DEBUG`_
is set to ``False``.  Default value is ``2592000`` (or 30 days).

OPENSTACK_API_VERSIONS
----------------------

.. versionadded:: 2013.2(Havana)

Default:

.. code-block:: python

    {
        "data-processing": 1.1,
        "identity": 2.0,
        "volume": 2,
        "compute": 2
    }

Overrides for OpenStack API versions. Use this setting to force the
OpenStack dashboard to use a specific API version for a given service API.

.. note::

    The version should be formatted as it appears in the URL for the
    service API. For example, the identity service APIs have inconsistent
    use of the decimal point, so valid options would be "2.0" or "3".
    For example:

    .. code-block:: python

        OPENSTACK_API_VERSIONS = {
            "data-processing": 1.1,
            "identity": 3,
            "volume": 2,
            "compute": 2
        }

OPENSTACK_CLOUDS_YAML_NAME
--------------------------

.. versionadded:: 12.0.0(Pike)

Default: ``"openstack"``

The name of the entry to put into the user's clouds.yaml file.

OPENSTACK_CLOUDS_YAML_PROFILE
-----------------------------

.. versionadded:: 12.0.0(Pike)

Default: ``None``

If set, the name of the `vendor profile`_ from `os-client-config`_.

.. _vendor profile: https://docs.openstack.org/os-client-config/latest/user/vendor-support.html
.. _os-client-config: https://docs.openstack.org/os-client-config/latest/

OPENSTACK_ENDPOINT_TYPE
-----------------------

.. versionadded:: 2012.1(Essex)

Default: ``"publicURL"``

A string which specifies the endpoint type to use for the endpoints in the
Keystone service catalog. The default value for all services except for
identity is ``"publicURL"`` . The default value for the identity service is
``"internalURL"``.

OPENSTACK_HOST
--------------

.. versionadded:: 2012.1(Essex)

Default: ``"127.0.0.1"``

The hostname of the Keystone server used for authentication if you only have
one region. This is often the **only** setting that needs to be set for a
basic deployment.

If you have multiple regions you should use the `AVAILABLE_REGIONS`_ setting
instead.

OPENSTACK_PROFILER
------------------

.. versionadded:: 11.0.0(Ocata)

Default: ``{"enabled": False}``

Various settings related to integration with osprofiler library. Since it is a
developer feature, it starts as disabled. To enable it, more than a single
``"enabled"`` key should be specified. Additional keys that should be specified
in that dictionary are:

* ``"keys"`` is a list of strings, which are secret keys used to encode/decode
  the profiler data contained in request headers. Encryption is used for
  security purposes, other OpenStack components that are expected to profile
  themselves with osprofiler using the data from the request that Horizon
  initiated must share a common set of keys with the ones in Horizon
  config. List of keys is used so that security keys could be changed in
  non-obtrusive manner for every component in the cloud.
  Example: ``"keys": ["SECRET_KEY", "MORE_SECRET_KEY"]``.
  For more details see `osprofiler documentation`_.
* ``"notifier_connection_string"`` is a url to which trace messages are sent by
  Horizon. For other components it is usually the only URL specified in config,
  because other components act mostly as traces producers. Example:
  ``"notifier_connection_string": "mongodb://%s' % OPENSTACK_HOST"``.
* ``"receiver_connection_string"`` is a url from which traces are retrieved by
  Horizon, needed because Horizon is not only the traces producer, but also a
  consumer. Having 2 settings which usually contain the same value is legacy
  feature from older versions of osprofiler when OpenStack components could use
  oslo.messaging for notifications and the trace client used ceilometer as a
  receiver backend. By default Horizon uses the same URL pointing to a MongoDB
  cluster for both purposes, since ceilometer was too slow for using with UI.
  Example: ``"receiver_connection_string": "mongodb://%s" % OPENSTACK_HOST``.

.. _osprofiler documentation: https://docs.openstack.org/osprofiler/latest/user/integration.html#how-to-initialize-profiler-to-get-one-trace-across-all-services

OPENSTACK_SSL_CACERT
--------------------

.. versionadded:: 2013.2(Havana)

Default: ``None``

When unset or set to ``None`` the default CA certificate on the system is used
for SSL verification.

When set with the path to a custom CA certificate file, this overrides use of
the default system CA certificate. This custom certificate is used to verify all
connections to openstack services when making API calls.

OPENSTACK_SSL_NO_VERIFY
-----------------------

.. versionadded:: 2012.2(Folsom)

Default: ``False``

Disable SSL certificate checks in the OpenStack clients (useful for self-signed
certificates).

OPERATION_LOG_ENABLED
---------------------

.. versionadded:: 10.0.0(Newton)

Default: ``False``

This setting can be used to enable logging of all operations carried out by
users of Horizon. The format of the logs is configured via
`OPERATION_LOG_OPTIONS`_

.. note::

  If you use this feature, you need to configure the logger setting like
  a outputting path for operation log in ``local_settings.py``.

OPERATION_LOG_OPTIONS
---------------------

.. versionadded:: 10.0.0(Newton)

.. versionchanged:: 12.0.0(Pike)

    Added ``ignored_urls`` parameter and added ``%(client_ip)s`` to ``format``

Default:

.. code-block:: python

    {
        'mask_fields': ['password'],
        'target_methods': ['POST'],
        'ignored_urls': ['/js/', '/static/', '^/api/'],
        'format': ("[%(domain_name)s] [%(domain_id)s] [%(project_name)s]"
            " [%(project_id)s] [%(user_name)s] [%(user_id)s] [%(request_scheme)s]"
            " [%(referer_url)s] [%(request_url)s] [%(message)s] [%(method)s]"
            " [%(http_status)s] [%(param)s]"),
    }

This setting controls the behavior of the operation log.

* ``mask_fields`` is a list of keys of post data which should be masked from the
  point of view of security. Fields like ``password`` should be included.
  The fields specified in ``mask_fields`` are logged as ``********``.
* ``target_methods`` is a request method which is logged to a operation log.
  The valid methods are ``POST``, ``GET``, ``PUT``, ``DELETE``.
* ``ignored_urls`` is a list of request URLs to be hidden from a log.
* ``format`` defines the operation log format.
  Currently you can use the following keywords.
  The default value contains all keywords.

  * ``%(client_ip)s``
  * ``%(domain_name)s``
  * ``%(domain_id)s``
  * ``%(project_name)s``
  * ``%(project_id)s``
  * ``%(user_name)s``
  * ``%(user_id)s``
  * ``%(request_scheme)s``
  * ``%(referer_url)s``
  * ``%(request_url)s``
  * ``%(message)s``
  * ``%(method)s``
  * ``%(http_status)s``
  * ``%(param)s``

OVERVIEW_DAYS_RANGE
-------------------

.. versionadded:: 10.0.0(Newton)

Default:: ``1``

When set to an integer N (as by default), the start date in the Overview panel
meters will be today minus N days. This setting is used to limit the amount of
data fetched by default when rendering the Overview panel. If set to ``None``
(which corresponds to the behavior in past Horizon versions), the start date
will be from the beginning of the current month until the current date. The
legacy behaviour is not recommended for large deployments as Horizon suffers
significant lag in this case.

POLICY_DIRS
-----------

.. versionadded:: 13.0.0(Queens)

Default: ``{}``

Specifies a list of policy directories per service types. The directories
are relative to `POLICY_FILES_PATH`_. Services whose additional policies
are defined here must be defined in `POLICY_FILES`_ too. Otherwise,
additional policies specified in ``POLICY_DIRS`` are not loaded.

Example:

.. code-block:: python

    {
        'identity': ['keystone_policy.d'],
        'compute': ['nova_policy.d'],
        'network': ['neutron_policy.d'],
    }

POLICY_FILES
------------

.. versionadded:: 2013.2(Havana)

Default:

.. code-block:: python

    {
        'identity': 'keystone_policy.json',
        'compute': 'nova_policy.json',
        'volume': 'cinder_policy.json',
        'image': 'glance_policy.json',
        'orchestration': 'heat_policy.json',
        'network': 'neutron_policy.json',
    }

This should essentially be the mapping of the contents of `POLICY_FILES_PATH`_
to service types. When policy.json files are added to `POLICY_FILES_PATH`_,
they should be included here too.

POLICY_FILES_PATH
-----------------

.. versionadded:: 2013.2(Havana)

Default:  ``os.path.join(ROOT_PATH, "conf")``

Specifies where service based policy files are located.  These are used to
define the policy rules actions are verified against.

REST_API_REQUIRED_SETTINGS
--------------------------

.. versionadded:: 2014.2(Kilo)

Default:

.. code-block:: python

    [
        'OPENSTACK_HYPERVISOR_FEATURES',
        'LAUNCH_INSTANCE_DEFAULTS',
        'OPENSTACK_IMAGE_FORMATS',
        'OPENSTACK_KEYSTONE_DEFAULT_DOMAIN'
    ]

This setting allows you to expose configuration values over Horizons internal
REST API, so that the AngularJS panels can access them. Please be cautious
about which values are listed here (and thus exposed on the frontend)

SELECTABLE_THEMES
---------------------

.. versionadded:: 12.0.0(Pike)

Default: ``AVAILABLE_THEMES``

This setting tells Horizon which themes to expose to the user as selectable
in the theme picker widget.  This value defaults to all themes configured
in `AVAILABLE_THEMES`_, but a brander may wish to simply inherit from an
existing theme and not allow that parent theme to be selected by the user.
``SELECTABLE_THEMES`` takes the exact same format as ``AVAILABLE_THEMES``.

SESSION_TIMEOUT
---------------

.. versionadded:: 2013.2(Havana)

Default: ``"3600"``

This SESSION_TIMEOUT is a method to supercede the token timeout with a shorter
horizon session timeout (in seconds).  So if your token expires in 60 minutes,
a value of 1800 will log users out after 30 minutes.

THEME_COLLECTION_DIR
--------------------

.. versionadded:: 9.0.0(Mitaka)

Default: ``"themes"``

This setting tells Horizon which static directory to collect the
available themes into, and therefore which URL points to the theme
collection root.  For example, the default theme would be accessible
via ``/{{ STATIC_URL }}/themes/default``.

THEME_COOKIE_NAME
-----------------

.. versionadded:: 9.0.0(Mitaka)

Default: ``"theme"``

This setting tells Horizon in which cookie key to store the currently
set theme.  The cookie expiration is currently set to a year.

WEBROOT
-------

.. versionadded:: 2015.1(Kilo)

Default: ``"/"``

Specifies the location where the access to the dashboard is configured in
the web server.

For example, if you're accessing the Dashboard via
``https://<your server>/dashboard``, you would set this to ``"/dashboard/"``.

.. note::

    Additional settings may be required in the config files of your webserver
    of choice. For example to make ``"/dashboard/"`` the web root in Apache,
    the ``"sites-available/horizon.conf"`` requires a couple of additional
    aliases set::

        Alias /dashboard/static %HORIZON_DIR%/static

        Alias /dashboard/media %HORIZON_DIR%/openstack_dashboard/static

    Apache also requires changing your WSGIScriptAlias to reflect the desired
    path.  For example, you'd replace ``/`` with ``/dashboard`` for the
    alias.



Service-specific Settings
=========================

The following settings inform the OpenStack Dashboard of information about the
other OpenStack projects which are part of this cloud and control the behavior
of specific dashboards, panels, API calls, etc.

Cinder
------

OPENSTACK_CINDER_FEATURES
~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2014.2(Juno)

Default: ``{'enable_backup': False}``

A dictionary of settings which can be used to enable optional services provided
by cinder.  Currently only the backup service is available.

Glance
------

CREATE_IMAGE_DEFAULTS
~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 12.0.0(Pike)

Default:

.. code-block:: python

    {
        'image_visibility': "public",
    }

A dictionary of default settings for create image modal.

The ``image_visibility`` setting specifies the default visibility option.
Valid values are  ``"public"`` and ``"private"``. By default, the visibility
option is public on create image modal. If it's set to ``"private"``, the
default visibility option is private.

HORIZON_IMAGES_ALLOW_UPLOAD
~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2013.1(Grizzly)

.. deprecated:: 10.0.0(Newton)

    Use `HORIZON_IMAGES_UPLOAD_MODE`_ instead.

Default: ``True``

If set to ``False``, this setting disables **local** uploads to prevent filling
up the disk on the dashboard server since uploads to the Glance image store
service tend to be particularly large - in the order of hundreds of megabytes
to multiple gigabytes.

The setting is marked as deprecated and will be removed in P or later release.
It is superseded by the setting HORIZON_IMAGES_UPLOAD_MODE. Until the removal
the ``False`` value of HORIZON_IMAGES_ALLOW_UPLOAD overrides the value of
HORIZON_IMAGES_UPLOAD_MODE.

.. note::

    This will not disable image creation altogether, as this setting does not
    affect images created by specifying an image location (URL) as the image
    source.

HORIZON_IMAGES_UPLOAD_MODE
~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 10.0.0(Newton)

Default: ``"legacy"``

Valid values are  ``"direct"``, ``"legacy"`` (default) and ``"off"``. ``"off"``
disables the ability to upload images via Horizon. It is equivalent to setting
``False`` on the deprecated setting ``HORIZON_IMAGES_ALLOW_UPLOAD``. ``legacy``
enables local file upload by piping the image file through the Horizon's
web-server. It is equivalent to setting ``True`` on the deprecated setting
``HORIZON_IMAGES_ALLOW_UPLOAD``. ``direct`` sends the image file directly from
the web browser to Glance. This bypasses Horizon web-server which both reduces
network hops and prevents filling up Horizon web-server's filesystem. ``direct``
is the preferred mode, but due to the following requirements it is not the
default. The ``direct`` setting requires a modern web browser, network access
from the browser to the public Glance endpoint, and CORS support to be enabled
on the Glance API service. Without CORS support, the browser will forbid the
PUT request to a location different than the Horizon server. To enable CORS
support for Glance API service, you will need to edit [cors] section of
glance-api.conf file (see `here`_ how to do it). Set `allowed_origin` to the
full hostname of Horizon web-server (e.g. http://<HOST_IP>/dashboard) and
restart glance-api process.

.. _here: https://docs.openstack.org/oslo.middleware/latest/reference/cors.html#configuration-for-oslo-config

.. note::

    To maintain the compatibility with the deprecated HORIZON_IMAGES_ALLOW_UPLOAD
    setting, neither ``"direct"``, nor ``"legacy"`` modes will have an effect if
    HORIZON_IMAGES_ALLOW_UPLOAD is set to ``False`` - as if HORIZON_IMAGES_UPLOAD_MODE
    was set to ``"off"`` itself. When HORIZON_IMAGES_ALLOW_UPLOAD is set to ``True``,
    all three modes are considered, as if HORIZON_IMAGES_ALLOW_UPLOAD setting
    was removed.

IMAGE_CUSTOM_PROPERTY_TITLES
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2014.1(Icehouse)

Default:

.. code-block:: python

    {
        "architecture": _("Architecture"),
        "kernel_id": _("Kernel ID"),
        "ramdisk_id": _("Ramdisk ID"),
        "image_state": _("Euca2ools state"),
        "project_id": _("Project ID"),
        "image_type": _("Image Type")
    }

Used to customize the titles for image custom property attributes that
appear on image detail pages.

IMAGE_RESERVED_CUSTOM_PROPERTIES
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2014.2(Juno)

Default: ``[]``

A list of image custom property keys that should not be displayed in the
Update Metadata tree.

This setting can be used in the case where a separate panel is used for
managing a custom property or if a certain custom property should never be
edited.

IMAGES_ALLOW_LOCATION
~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 10.0.0(Newton)

Default: ``False``

If set to ``True``, this setting allows users to specify an image location
(URL) as the image source when creating or updating images. Depending on
the Glance version, the ability to set an image location is controlled by
policies and/or the Glance configuration. Therefore IMAGES_ALLOW_LOCATION
should only be set to ``True`` if Glance is configured to allow specifying a
location. This setting has no effect when the Keystone catalog doesn't contain
a Glance v2 endpoint.

IMAGES_LIST_FILTER_TENANTS
~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2013.1(Grizzly)

Default: ``None``

A list of dictionaries to add optional categories to the image fixed filters
in the Images panel, based on project ownership.

Each dictionary should contain a `tenant` attribute with the project
id, and optionally a `text` attribute specifying the category name, and
an `icon` attribute that displays an icon in the filter button. The
icon names are based on the default icon theme provided by Bootstrap.

Example:

.. code-block:: python

   [{'text': 'Official',
     'tenant': '27d0058849da47c896d205e2fc25a5e8',
     'icon': 'fa-check'}]

OPENSTACK_IMAGE_BACKEND
~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2013.2(Havana)

Default:

.. code-block:: python

    {
        'image_formats': [
            ('', _('Select format')),
            ('aki', _('AKI - Amazon Kernel Image')),
            ('ami', _('AMI - Amazon Machine Image')),
            ('ari', _('ARI - Amazon Ramdisk Image')),
            ('docker', _('Docker')),
            ('iso', _('ISO - Optical Disk Image')),
            ('qcow2', _('QCOW2 - QEMU Emulator')),
            ('raw', _('Raw')),
            ('vdi', _('VDI')),
            ('vhd', _('VHD')),
            ('vmdk', _('VMDK'))
        ]
    }

Used to customize features related to the image service, such as the list of
supported image formats.

Heat
----

OPENSTACK_HEAT_STACK
~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 9.0.0(Mitaka)

Default:

.. code-block:: python

    {
        'enable_user_pass': True
    }

A dictionary of settings to use with heat stacks. Currently, the only setting
available is "enable_user_pass", which can be used to disable the password
field while launching the stack. Currently HEAT API needs user password to
perform all the heat operations because in HEAT API trusts is not enabled by
default. So, this setting can be set as "False" in-case HEAT uses trusts by
default otherwise it needs to be set as "True".

Keystone
--------

AUTHENTICATION_PLUGINS
~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2015.1(Kilo)

Default:

.. code-block:: python

    [
        'openstack_auth.plugin.password.PasswordPlugin',
        'openstack_auth.plugin.token.TokenPlugin'
    ]

A list of authentication plugins to be used. In most cases, there is no need to
configure this.

AUTHENTICATION_URLS
~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2015.1(Kilo)

Default: ``['openstack_auth.urls']``

A list of modules from which to collate authentication URLs from. The default
option adds URLs from the django-openstack-auth module however others will be
required for additional authentication mechanisms.

AVAILABLE_REGIONS
~~~~~~~~~~~~~~~~~

.. versionadded:: 2012.1(Essex)

Default: ``None``

A list of tuples which define multiple regions. The tuple format is
``('http://{{ keystone_host }}:5000/v2.0', '{{ region_name }}')``. If any regions
are specified the login form will have a dropdown selector for authenticating
to the appropriate region, and there will be a region switcher dropdown in
the site header when logged in.

You should also define `OPENSTACK_KEYSTONE_URL`_ to indicate which of
the regions is the default one.


DEFAULT_SERVICE_REGIONS
~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 12.0.0(Pike)

Default: ``{}``

The default service region is set on a per-endpoint basis, meaning that once
the user logs into some Keystone endpoint, if a default service region is
defined for it in this setting and exists within Keystone catalog, it will be
set as the initial service region in this endpoint. By default it is an empty
dictionary because upstream can neither predict service region names in a
specific deployment, nor tell whether this behavior is desired. The key of the
dictionary is a full url of a Keystone endpoint with version suffix, the value
is a region name.

Example:

.. code-block:: python

    DEFAULT_SERVICE_REGIONS = {
        OPENSTACK_KEYSTONE_URL: 'RegionOne'
    }

ENABLE_CLIENT_TOKEN
~~~~~~~~~~~~~~~~~~~

.. versionadded:: 10.0.0(Newton)

Default: ``True``

This setting will Enable/Disable access to the Keystone Token to the
browser.

ENFORCE_PASSWORD_CHECK
~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2015.1(Kilo)

Default: ``False``

This setting will display an 'Admin Password' field on the Change Password
form to verify that it is indeed the admin logged-in who wants to change
the password.

KEYSTONE_PROVIDER_IDP_ID
~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 11.0.0(Ocata)

Default: ``"localkeystone"``

This ID is only used for comparison with the service provider IDs.
This ID should not match any service provider IDs.

KEYSTONE_PROVIDER_IDP_NAME
~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 11.0.0(Ocata)

Default: ``"Local Keystone"``

The Keystone Provider drop down uses Keystone to Keystone federation to switch
between Keystone service providers. This sets the display name for the Identity
Provider (dropdown display name).

OPENSTACK_KEYSTONE_ADMIN_ROLES
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2015.1(Kilo)

Default: ``["admin"]``

The list of roles that have administrator privileges in this OpenStack
installation. This check is very basic and essentially only works with
keystone v2.0 and v3 with the default policy file. The setting assumes there
is a common ``admin`` like role(s) across services. Example uses of this
setting are:

* to rename the ``admin`` role to ``cloud-admin``
* allowing multiple roles to have administrative privileges, like
  ``["admin", "cloud-admin", "net-op"]``

OPENSTACK_KEYSTONE_BACKEND
~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2012.1(Essex)

Default:

.. code-block:: python

    {
        'name': 'native',
        'can_edit_user': True,
        'can_edit_group': True,
        'can_edit_project': True,
        'can_edit_domain': True,
        'can_edit_role': True,
    }

A dictionary containing settings which can be used to identify the
capabilities of the auth backend for Keystone.

If Keystone has been configured to use LDAP as the auth backend then set
``can_edit_user`` and ``can_edit_project`` to ``False`` and name to ``"ldap"``.

OPENSTACK_KEYSTONE_DEFAULT_DOMAIN
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2013.2(Havana)

Default: ``"Default"``

Overrides the default domain used when running on single-domain model
with Keystone V3. All entities will be created in the default domain.

OPENSTACK_KEYSTONE_DEFAULT_ROLE
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2011.3(Diablo)

Default: ``"_member_"``

The name of the role which will be assigned to a user when added to a project.
This value must correspond to an existing role name in Keystone. In general,
the value should match the ``member_role_name`` defined in ``keystone.conf``.

OPENSTACK_KEYSTONE_DOMAIN_CHOICES
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 12.0.0(Pike)

Default:

.. code-block:: python

    (
        ('Default', 'Default'),
    )

If `OPENSTACK_KEYSTONE_DOMAIN_DROPDOWN`_ is enabled, this option can be used to
set the available domains to choose from. This is a list of pairs whose first
value is the domain name and the second is the display name.

OPENSTACK_KEYSTONE_DOMAIN_DROPDOWN
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 12.0.0(Pike)

Default: ``False``

Set this to True if you want available domains displayed as a dropdown menu on
the login screen. It is strongly advised NOT to enable this for public clouds,
as advertising enabled domains to unauthenticated customers irresponsibly
exposes private information. This should only be used for private clouds where
the dashboard sits behind a corporate firewall.

OPENSTACK_KEYSTONE_FEDERATION_MANAGEMENT
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 9.0.0(Mitaka)

Default: ``False``

Set this to True to enable panels that provide the ability for users to manage
Identity Providers (IdPs) and establish a set of rules to map federation
protocol attributes to Identity API attributes. This extension requires v3.0+
of the Identity API.

OPENSTACK_KEYSTONE_MULTIDOMAIN_SUPPORT
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2013.2(Havana)

Default: ``False``

Set this to True if running on multi-domain model. When this is enabled, it
will require user to enter the Domain name in addition to username for login.

OPENSTACK_KEYSTONE_URL
~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2011.3(Diablo)

.. seealso::

  Horizon's `OPENSTACK_HOST`_ documentation

Default: ``"http://%s:5000/v2.0" % OPENSTACK_HOST``

The full URL for the Keystone endpoint used for authentication. Unless you
are using HTTPS, running your Keystone server on a nonstandard port, or using
a nonstandard URL scheme you shouldn't need to touch this setting.

OPENSTACK_TOKEN_HASH_ALGORITHM
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2014.2(Juno)

Default: ``"md5"``

The hash algorithm to use for authentication tokens. This must match the hash
algorithm that the identity (Keystone) server and the auth_token middleware
are using. Allowed values are the algorithms supported by Python's hashlib
library.

OPENSTACK_TOKEN_HASH_ENABLED
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 8.0.0(Liberty)

.. deprecated:: 9.0.0(Mitaka)

    PKI tokens currently work with hashing, and Keystone will soon deprecate
    usage of PKI tokens.

Default: ``True``

Hashing tokens from Keystone keeps the Horizon session data smaller, but it
doesn't work in some cases when using PKI tokens.  Uncomment this value and
set it to False if using PKI tokens and there are 401 errors due to token
hashing.

PASSWORD_EXPIRES_WARNING_THRESHOLD_DAYS
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 12.0.0(Pike)

Default: ``-1``

Password will have an expiration date when using keystone v3 and enabling the
feature. This setting allows you to set the number of days that the user will
be alerted prior to the password expiration. Once the password expires keystone
will deny the access and users must contact an admin to change their password.
Setting this value to ``N`` days means the user will be alerted when the
password expires in less than ``N+1`` days. ``-1`` disables the feature.

PROJECT_TABLE_EXTRA_INFO
~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 10.0.0(Newton)

.. seealso::

  `USER_TABLE_EXTRA_INFO`_ for the equivalent setting on the Users table

Default: ``{}``

Adds additional information for projects as extra attributes. Projects can have
extra attributes as defined by Keystone v3. This setting allows those
attributes to be shown in Horizon.

For example:

.. code-block:: python

    PROJECT_TABLE_EXTRA_INFO = {
        'phone_num': _('Phone Number'),
    }

SECURE_PROXY_ADDR_HEADER
~~~~~~~~~~~~~~~~~~~~~~~~

Default: ``False``

If horizon is behind a proxy server and the proxy is configured, the IP address
from request is passed using header variables inside the request. The header
name depends on a proxy or a load-balancer. This setting specifies the name of
the header with remote IP address. The main use is for authentication log
(success or fail) displaing the IP address of the user.
The commom value for this setting is ``HTTP_X_REAL_IP`` or
``HTTP_X_FORWARDED_FOR``.
If not present, then ``REMOTE_ADDR`` header is used. (``REMOTE_ADDR`` is the
field of Django HttpRequest object which contains IP address of the client.)

TOKEN_DELETION_DISABLED
~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 10.0.0(Newton)

Default: ``False``

This setting allows deployers to control whether a token is deleted on log out.
This can be helpful when there are often long running processes being run
in the Horizon environment.

TOKEN_TIMEOUT_MARGIN
~~~~~~~~~~~~~~~~~~~~

Default: ``0``

A time margin in seconds to subtract from the real token's validity. An example
use case is that the token can be valid once the middleware passed, and
invalid (timed-out) during a view rendering and this generates authorization
errors during the view rendering. By setting this value to a few seconds, you
can avoid token expiration during a view rendering.

USER_TABLE_EXTRA_INFO
~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 10.0.0(Newton)

.. seealso::

  `PROJECT_TABLE_EXTRA_INFO`_ for the equivalent setting on the Projects table

Default: ``{}``

Adds additional information for users as extra attributes. Users can have
extra attributes as defined by Keystone v3. This setting allows those
attributes to be shown in Horizon.

For example:

.. code-block:: python

    USER_TABLE_EXTRA_INFO = {
        'phone_num': _('Phone Number'),
    }

WEBSSO_CHOICES
~~~~~~~~~~~~~~

.. versionadded:: 2015.1(Kilo)

Default:

.. code-block:: python

    (
        ("credentials", _("Keystone Credentials")),
        ("oidc", _("OpenID Connect")),
        ("saml2", _("Security Assertion Markup Language"))
    )

This is the list of authentication mechanisms available to the user. It
includes Keystone federation protocols such as OpenID Connect and SAML, and
also keys that map to specific identity provider and federation protocol
combinations (as defined in `WEBSSO_IDP_MAPPING`_). The list of choices is
completely configurable, so as long as the id remains intact. Do not remove
the credentials mechanism unless you are sure. Once removed, even admins will
have no way to log into the system via the dashboard.

WEBSSO_ENABLED
~~~~~~~~~~~~~~

.. versionadded:: 2015.1(Kilo)

Default: ``False``

Enables keystone web single-sign-on if set to True. For this feature to work,
make sure that you are using Keystone V3 and Django OpenStack Auth V1.2.0 or
later.

WEBSSO_IDP_MAPPING
~~~~~~~~~~~~~~~~~~

.. versionadded:: 8.0.0(Liberty)

Default: ``{}``

A dictionary of specific identity provider and federation protocol combinations.
From the selected authentication mechanism, the value will be looked up as keys
in the dictionary. If a match is found, it will redirect the user to a identity
provider and federation protocol specific WebSSO endpoint in keystone,
otherwise it will use the value as the protocol_id when redirecting to the
WebSSO by protocol endpoint.

Example:

.. code-block:: python

    WEBSSO_CHOICES =  (
        ("credentials", _("Keystone Credentials")),
        ("oidc", _("OpenID Connect")),
        ("saml2", _("Security Assertion Markup Language")),
        ("acme_oidc", "ACME - OpenID Connect"),
        ("acme_saml2", "ACME - SAML2")
    )

    WEBSSO_IDP_MAPPING = {
        "acme_oidc": ("acme", "oidc"),
        "acme_saml2": ("acme", "saml2")
    }

.. note::

    The value is expected to be a tuple formatted as: (<idp_id>, <protocol_id>)

WEBSSO_INITIAL_CHOICE
~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2015.1(Kilo)

Default: ``"credentials"``

Specifies the default authentication mechanism. When user lands on the login
page, this is the first choice they will see.

Neutron
-------

ALLOWED_PRIVATE_SUBNET_CIDR
~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 10.0.0(Newton)

Default:

.. code-block:: python

    {
        'ipv4': [],
        'ipv6': []
    }

A dictionary used to restrict user private subnet CIDR range.
An empty list means that user input will not be restricted
for a corresponding IP version. By default, there is
no restriction for both IPv4 and IPv6.

Example:

.. code-block:: python

    {
        'ipv4': [
            '192.168.0.0/16',
            '10.0.0.0/8'
        ],
        'ipv6': [
            'fc00::/7',
        ]
    }


OPENSTACK_NEUTRON_NETWORK
~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2013.1(Grizzly)

Default:

.. code-block:: python

    {
        'default_dns_nameservers': [],
        'enable_distributed_router': False,
        'enable_fip_topology_check': True,
        'enable_ha_router': False,
        'enable_ipv6': True,
        'enable_quotas': False,
        'enable_router': True,
        'extra_provider_types': {},
        'physical_networks': [],
        'segmentation_id_range': {},
        'supported_provider_types': ["*"],
        'supported_vnic_types': ["*"],
    }

A dictionary of settings which can be used to enable optional services provided
by Neutron and configure Neutron specific features.  The following options are
available.

default_dns_nameservers
#######################

.. versionadded:: 10.0.0(Newton)

Default: ``None`` (Empty)

Default DNS servers you would like to use when a subnet is created. This is
only a default. Users can still choose a different list of dns servers.

Example: ``["8.8.8.8", "8.8.4.4", "208.67.222.222"]``

enable_distributed_router
#########################

.. versionadded:: 2014.2(Juno)

Default: ``False``

Enable or disable Neutron distributed virtual router (DVR) feature in
the Router panel. For the DVR feature to be enabled, this option needs
to be set to True and your Neutron deployment must support DVR. Even
when your Neutron plugin (like ML2 plugin) supports DVR feature, DVR
feature depends on l3-agent configuration, so deployers should set this
option appropriately depending on your deployment.

enable_fip_topology_check
#########################

.. versionadded:: 8.0.0(Liberty)

Default: ``True``

The Default Neutron implementation needs a router with a gateway to associate a
FIP. So by default a topology check will be performed by horizon to list only
VM ports attached to a network which is itself attached to a router with an
external gateway. This is to prevent from setting a FIP to a port which will
fail with an error.
Some Neutron vendors do not require it. Some can even attach a FIP to any port
(e.g.: OpenContrail) owned by a tenant.
Set to False if you want to be able to associate a FIP to an instance on a
subnet with no router if your Neutron backend allows it.

enable_ha_router
################

.. versionadded:: 2014.2(Juno)

Default: ``False``

Enable or disable HA (High Availability) mode in Neutron virtual router
in the Router panel. For the HA router mode to be enabled, this option needs
to be set to True and your Neutron deployment must support HA router mode.
Even when your Neutron plugin (like ML2 plugin) supports HA router mode,
the feature depends on l3-agent configuration, so deployers should set this
option appropriately depending on your deployment.

enable_ipv6
###########

.. versionadded:: 2014.2(Juno)

Default: ``False``

Enable or disable IPv6 support in the Network panels. When disabled, Horizon
will only expose IPv4 configuration for networks.

enable_quotas
#############

Default: ``False``

Enable support for Neutron quotas feature. To make this feature work
appropriately, you need to use Neutron plugins with quotas extension support
and quota_driver should be DbQuotaDriver (default config).

enable_router
#############

.. versionadded:: 2014.2(Juno)

Default: ``True``

Enable (``True``) or disable (``False``) the panels and menus related to router
and Floating IP features. This option only affects when Neutron is enabled. If
your Neutron deployment has no support for Layer-3 features, or you do not wish
to provide the Layer-3 features through the Dashboard, this should be set to
``False``.

extra_provider_types
####################

.. versionadded:: 10.0.0(Newton)

Default: ``{}``

For use with the provider network extension.
This is a dictionary to define extra provider network definitions.
Network types supported by Neutron depend on the configured plugin.
Horizon has predefined provider network types but horizon cannot cover
all of them. If you are using a provider network type not defined
in advance, you can add a definition through this setting.

The **key** name of each item in this must be a network type used
in the Neutron API. **value** should be a dictionary which contains
the following items:

* ``display_name``: string displayed in the network creation form.
* ``require_physical_network``: a boolean parameter which indicates
  this network type requires a physical network.
* ``require_segmentation_id``: a boolean parameter which indicates
  this network type requires a segmentation ID.
  If True, a valid segmentation ID range must be configured
  in ``segmentation_id_range`` settings above.

Example:

.. code-block:: python

    {
        'awesome': {
            'display_name': 'Awesome',
            'require_physical_network': False,
            'require_segmentation_id': True,
        },
    }

physical_networks
#################

.. versionadded:: 12.0.0(Pike)

Default: ``[]``

Default to an empty list and the physical network field on the admin create
network modal will be a regular input field where users can type in the name
of the physical network to be used.
If it is set to a list of available physical networks, the physical network
field will be shown as a dropdown menu where users can select a physical
network to be used.

Example: ``['default', 'test']``

segmentation_id_range
#####################

.. versionadded:: 2014.2(Juno)

Default: ``{}``

For use with the provider network extension. This is a dictionary where each
key is a provider network type and each value is a list containing two numbers.
The first number is the minimum segmentation ID that is valid. The second
number is the maximum segmentation ID. Pertains only to the vlan, gre, and
vxlan network types. By default this option is not provided and each minimum
and maximum value will be the default for the provider network type.

Example:

.. code-block:: python

    {
        'vlan': [1024, 2048],
        'gre': [4094, 65536]
    }

supported_provider_types
########################

.. versionadded:: 2014.2(Juno)

Default: ``["*"]``

For use with the provider network extension. Use this to explicitly set which
provider network types are supported. Only the network types in this list will
be available to choose from when creating a network.
Network types defined in Horizon or defined in `extra_provider_types`_
settings can be specified in this list.
As of the Newton release, the network types defined in Horizon include
network types supported by Neutron ML2 plugin with Open vSwitch driver
(``local``, ``flat``, ``vlan``, ``gre``, ``vxlan`` and ``geneve``)
and supported by Midonet plugin (``midonet`` and ``uplink``).
``["*"]`` means that all provider network types supported by Neutron
ML2 plugin will be available to choose from.

Example: ``['local', 'flat', 'gre']``

supported_vnic_types
####################

.. versionadded:: 2015.1(Kilo)

.. versionchanged:: 12.0.0(Pike)

    Added ``virtio-forwarder`` VNIC type
    Clarified VNIC type availability for users and operators


Default ``['*']``

For use with the port binding extension. Use this to explicitly set which VNIC
types are available for users to choose from, when creating or editing a port.
The VNIC types actually supported are determined by resource availability and
Neutron ML2 plugin support.
Currently, error reporting for users selecting an incompatible or unavailable
VNIC type is restricted to receiving a message from the scheduler that the
instance cannot spawn because of insufficient resources.
VNIC types include ``normal``, ``direct``, ``direct-physical``, ``macvtap``,
``baremetal`` and ``virtio-forwarder``. By default all VNIC types will be
available to choose from.

Example: ``['normal', 'direct']``

To disable VNIC type selection, set an empty list (``[]``) or ``None``.

Nova
----

CREATE_INSTANCE_FLAVOR_SORT
~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2013.2(Havana)

Default:

.. code-block:: python

    {
        'key': 'ram'
    }

When launching a new instance the default flavor is sorted by RAM usage in
ascending order.
You can customize the sort order by: id, name, ram, disk and vcpus.
Additionally, you can insert any custom callback function. You can also
provide a flag for reverse sort.
See the description in local_settings.py.example for more information.

This example sorts flavors by vcpus in descending order:

.. code-block:: python

    CREATE_INSTANCE_FLAVOR_SORT = {
         'key':'vcpus',
         'reverse': True,
    }

CONSOLE_TYPE
~~~~~~~~~~~~

.. versionadded:: 2013.2(Havana)

.. versionchanged:: 2014.2(Juno)

    Added the ``None`` option, which deactivates the in-browser console

.. versionchanged:: 2015.1(Kilo)

    Added the ``SERIAL`` option

.. versionchanged:: 2017.11(Queens)

    Added the ``MKS`` option

Default:  ``"AUTO"``

This setting specifies the type of in-browser console used to access the VMs.
Valid values are  ``"AUTO"``, ``"VNC"``, ``"SPICE"``, ``"RDP"``,
``"SERIAL"``, ``"MKS"``, and ``None``.

ENABLE_FLAVOR_EDIT
~~~~~~~~~~~~~~~~~~

.. versionadded:: 12.0.0(Pike)

.. deprecated:: 12.0.0(Pike)

Default: ``False``

This setting enables the ability to edit flavors.

.. warning::

  Historically, Horizon has provided the ability to edit Flavors by deleting
  and creating a new one with the same information. This is not supported in
  the Nova API and causes unexpected issues and breakages. To avoid breaking
  standard deprecation procedure, this code is still in Horizon, but disabled
  by default. It will be removed during the 14.0.0 ('R') release cycle.

  See `this email thread
  <http://lists.openstack.org/pipermail/openstack-dev/2017-August/120540.html>`_
  for further information.

INSTANCE_LOG_LENGTH
~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2015.1(Kilo)

Default:  ``35``

This setting enables you to change the default number of lines displayed for
the log of an instance.
Valid value must be a positive integer.

LAUNCH_INSTANCE_DEFAULTS
~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 9.0.0(Mitaka)

.. versionchanged:: 10.0.0(Newton)

    Added the ``disable_image``, ``disable_instance_snapshot``,
    ``disable_volume`` and ``disable_volume_snapshot`` options.

.. versionchanged:: 12.0.0(Pike)

    Added the ``create_volume`` option.

Default:

.. code-block:: python

    {
        "config_drive": False,
        "create_volume": True,
        "disable_image": False,
        "disable_instance_snapshot": False,
        "disable_volume": False,
        "disable_volume_snapshot": False,
        "enable_scheduler_hints": True,
    }

A dictionary of settings which can be used to provide the default values for
properties found in the Launch Instance modal. An explanation of each setting
is provided below.

config_drive
############

.. versionadded:: 9.0.0(Mitaka)

Default: ``False``

This setting specifies the default value for the Configuration Drive property.

create_volume
#############

.. versionadded:: 12.0.0(Pike)

Default: ``True``

This setting allows you to specify the default value for the option of creating
a new volume in the workflow for image and instance snapshot sources.

disable_image
#############

.. versionadded:: 10.0.0(Newton)

Default: ``False``

This setting disables Images as a valid boot source for launching instances.
Image sources won't show up in the Launch Instance modal.

disable_instance_snapshot
#########################

.. versionadded:: 10.0.0(Newton)

Default: ``False``

This setting disables Snapshots as a valid boot source for launching instances.
Snapshots sources won't show up in the Launch Instance modal.

disable_volume
##############

.. versionadded:: 10.0.0(Newton)

Default: ``False``

This setting disables Volumes as a valid boot source for launching instances.
Volumes sources won't show up in the Launch Instance modal.

disable_volume_snapshot
#######################

.. versionadded:: 10.0.0(Newton)

Default: ``False``

This setting disables Volume Snapshots as a valid boot source for launching
instances. Volume Snapshots sources won't show up in the Launch Instance modal.

enable_scheduler_hints
######################

.. versionadded:: 9.0.0(Mitaka)

Default: ``True``

This setting specifies whether or not Scheduler Hints can be provided when
launching an instance.

LAUNCH_INSTANCE_LEGACY_ENABLED
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 8.0.0(Liberty)

.. versionchanged:: 9.0.0(Mitaka)

    The default value for this setting has been changed to ``False``

Default: ``False``

This setting enables the Python Launch Instance workflow.

.. note::

    It is possible to run both the AngularJS and Python workflows simultaneously,
    so the other may be need to be toggled with `LAUNCH_INSTANCE_NG_ENABLED`_

LAUNCH_INSTANCE_NG_ENABLED
~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 8.0.0(Liberty)

.. versionchanged:: 9.0.0(Mitaka)

    The default value for this setting has been changed to ``True``

Default: ``True``

This setting enables the AngularJS Launch Instance workflow.

.. note::

    It is possible to run both the AngularJS and Python workflows simultaneously,
    so the other may be need to be toggled with `LAUNCH_INSTANCE_LEGACY_ENABLED`_

OPENSTACK_ENABLE_PASSWORD_RETRIEVE
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2014.1(Icehouse)

Default: ``"False"``

When set, enables the instance action "Retrieve password" allowing password
retrieval from metadata service.

OPENSTACK_HYPERVISOR_FEATURES
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2012.2(Folsom)

.. versionchanged:: 2014.1(Icehouse)

    ``can_set_mount_point`` and ``can_set_password`` now default to ``False``

Default:

.. code-block:: python

    {
        'can_set_mount_point': False,
        'can_set_password': False,
        'requires_keypair': False,
        'enable_quotas': True
    }

A dictionary containing settings which can be used to identify the
capabilities of the hypervisor for Nova.

The Xen Hypervisor has the ability to set the mount point for volumes attached
to instances (other Hypervisors currently do not). Setting
``can_set_mount_point`` to ``True`` will add the option to set the mount point
from the UI.

Setting ``can_set_password`` to ``True`` will enable the option to set
an administrator password when launching or rebuilding an instance.

Setting ``requires_keypair`` to ``True`` will require users to select
a key pair when launching an instance.

Setting ``enable_quotas`` to ``False`` will make Horizon treat all Nova
quotas as disabled, thus it won't try to modify them. By default, quotas are
enabled.

OPENSTACK_NOVA_EXTENSIONS_BLACKLIST
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 8.0.0(Liberty)

Default: ``[]``

Ignore all listed Nova extensions, and behave as if they were unsupported.
Can be used to selectively disable certain costly extensions for performance
reasons.

Sahara
------

.. warning::

  The Sahara dashboard was removed from Horizon during the Newton cycle,
  and any settings here should be considered legacy. For more up to date
  information, see the `Sahara Dashboard repo
  <https://github.com/openstack/sahara-dashboard>`_

SAHARA_AUTO_IP_ALLOCATION_ENABLED
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2014.2(Juno)

.. deprecated:: 10.0.0(Newton)

Default:  ``False``

This setting notifies the Data Processing (Sahara) system whether or not
automatic IP allocation is enabled.  You would want to set this to ``True``
if you were running Nova Networking with ``auto_assign_floating_ip`` set to
``True``.

Swift
-----

SWIFT_FILE_TRANSFER_CHUNK_SIZE
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2015.1(Kilo)

Default: ``512 * 1024``

This setting specifies the size of the chunk (in bytes) for downloading objects
from Swift. Do not make it very large (higher than several dozens of Megabytes,
exact number depends on your connection speed), otherwise you may encounter
socket timeout. The default value is 524288 bytes (or 512 Kilobytes).

Trove
-----

.. warning::

  The Trove dashboard was removed from Horizon during the Newton cycle,
  and any settings here should be considered legacy. For more up to date
  information, see the `Trove Dashboard repo
  <https://github.com/openstack/trove-dashboard>`_

TROVE_ADD_DATABASE_PERMS
~~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2013.2(Havana)

.. deprecated:: 10.0.0(Newton)

Default: ``[]``

Trove database extension support. By default, support for creating databases on
database instances is turned on. To disable this extensions set the permission
to something unusable such as ``[!]``.

TROVE_ADD_USER_PERMS
~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 2013.2(Havana)

.. deprecated:: 10.0.0(Newton)

Default: ``[]``

Trove users extension support. By default, support for creating users on
database instances is turned on. To disable this extensions set the permission
to something unusable such as ``[!]``.

Django Settings
===============

.. note::

    This is not meant to be anywhere near a complete list of settings for
    Django. You should always consult the `upstream documentation
    <https://docs.djangoproject.com/en/dev/topics/settings/>`_, especially
    with regards to deployment considerations and security best-practices.

ADD_INSTALLED_APPS
------------------

.. versionadded:: 2015.1(Kilo)

.. seealso::

    `Django's INSTALLED_APPS documentation
    <https://docs.djangoproject.com/en/dev/ref/settings/#installed_apps>`_

A list of Django applications to be prepended to the ``INSTALLED_APPS``
setting. Allows extending the list of installed applications without having
to override it completely.

ALLOWED_HOSTS
-------------

.. versionadded:: 2013.2(Havana)

.. seealso::

    `Django's ALLOWED_HOSTS documentation
    <https://docs.djangoproject.com/en/dev/ref/settings/#allowed-hosts>`_

Default: ``['localhost']``

This list should contain names (or IP addresses) of the host
running the dashboard; if it's being accessed via name, the
DNS name (and probably short-name) should be added, if it's accessed via
IP address, that should be added. The setting may contain more than one entry.

.. note::

    ALLOWED_HOSTS is required. If Horizon is running in production (DEBUG is
    False), set this with the list of host/domain names that the application
    can serve. For more information see `Django's Allowed Hosts documentation
    <https://docs.djangoproject.com/en/dev/ref/settings/#allowed-hosts>`_

.. _debug_setting:

DEBUG
-----

.. versionadded:: 2011.2(Cactus)

.. seealso::

    `Django's DEBUG documentation
    <https://docs.djangoproject.com/en/dev/ref/settings/#debug>`_

Default: ``True``

Controls whether unhandled exceptions should generate a generic 500 response
or present the user with a pretty-formatted debug information page.

When set, `CACHED_TEMPLATE_LOADERS`_ will not be cached.

This setting should **always** be set to ``False`` for production deployments
as the debug page can display sensitive information to users and attackers
alike.

SECRET_KEY
----------

.. versionadded:: 2012.1(Essex)

.. seealso::

    `Django's SECRET_KEY documentation
    <https://docs.djangoproject.com/en/dev/ref/settings/#secret-key>`_

This should absolutely be set to a unique (and secret) value for your
deployment. Unless you are running a load-balancer with multiple Horizon
installations behind it, each Horizon instance should have a unique secret key.

.. note::

    Setting a custom secret key:

    You can either set it to a specific value or you can let Horizon generate a
    default secret key that is unique on this machine, regardless of the
    amount of Python WSGI workers (if used behind Apache+mod_wsgi). However,
    there may be situations where you would want to set this explicitly, e.g.
    when multiple dashboard instances are distributed on different machines
    (usually behind a load-balancer). Either you have to make sure that a
    session gets all requests routed to the same dashboard instance or you set
    the same SECRET_KEY for all of them.

.. code-block:: python

    from horizon.utils import secret_key

    SECRET_KEY = secret_key.generate_or_read_from_file(
    os.path.join(LOCAL_PATH, '.secret_key_store'))

The ``local_settings.py.example`` file includes a quick-and-easy way to
generate a secret key for a single installation.

STATIC_ROOT
-----------

.. versionadded:: 8.0.0(Liberty)

.. seealso::

    `Django's STATIC_ROOT documentation
    <https://docs.djangoproject.com/en/dev/ref/settings/#static-root>`_

Default: ``<path_to_horizon>/static``

The absolute path to the directory where static files are collected when
collectstatic is run.

STATIC_URL
----------

.. versionadded:: 8.0.0(Liberty)

.. seealso::

    `Django's STATIC_URL documentation
    <https://docs.djangoproject.com/en/dev/ref/settings/#static-url>`_

Default: ``/static/``

URL that refers to files in `STATIC_ROOT`_.

By default this value is ``WEBROOT/static/``.

This value can be changed from the default. When changed, the alias in your
webserver configuration should be updated to match.

.. note::

    The value for STATIC_URL must end in '/'.

This value is also available in the scss namespace with the variable name
$static_url.  Make sure you run ``python manage.py collectstatic`` and
``python manage.py compress`` after any changes to this value in settings.py.

TEMPLATES
---------

.. versionadded:: 10.0.0(Newton)

.. seealso::

    `Django's TEMPLATES documentation
    <https://docs.djangoproject.com/en/dev/ref/settings/#templates>`_

Horizon's usage of the ``TEMPLATES`` involves 3 further settings below;
it is generally advised to use those before attempting to alter the
``TEMPLATES`` setting itself.

ADD_TEMPLATE_LOADERS
~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 10.0.0(Newton)

Template loaders defined here will be loaded at the end of `TEMPLATE_LOADERS`_,
after the `CACHED_TEMPLATE_LOADERS`_ and will never have a cached output.

CACHED_TEMPLATE_LOADERS
~~~~~~~~~~~~~~~~~~~~~~~

.. versionadded:: 10.0.0(Newton)

Template loaders defined here will have their output cached if `DEBUG`_
is set to ``False``.

TEMPLATE_LOADERS
~~~~~~~~~~~~~~~~

.. versionadded:: 10.0.0(Newton)

These template loaders will be the first loaders and get loaded before the
CACHED_TEMPLATE_LOADERS. Use ADD_TEMPLATE_LOADERS if you want to add loaders at
the end and not cache loaded templates.
After the whole settings process has gone through, TEMPLATE_LOADERS will be:

.. code-block:: python

    TEMPLATE_LOADERS += (
        ('django.template.loaders.cached.Loader', CACHED_TEMPLATE_LOADERS),
    ) + tuple(ADD_TEMPLATE_LOADERS)