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Document Configuring ntp during deployed ceph 

Depends-On: I85b692c21269f1bb69dabd54c1c2212cb03e2afe
Change-Id: Ie5aea0149693aa83cd1c8115c12fc4d395d1bf8b
This commit is contained in:
katarimanoj 2023-03-01 23:51:11 +05:30
parent fb9fcb7275
commit a8775d319f
1 changed files with 47 additions and 0 deletions
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47
deploy-guide/source/features/deployed_ceph.rst
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@ -177,6 +177,7 @@ The command line interface supports the following options::
[--skip-user-create]
[--skip-hosts-config]
[--skip-container-registry-config]
[--skip-ntp]
[--cephadm-ssh-user CEPHADM_SSH_USER]
[--stack STACK]
[--working-dir WORKING_DIR]
@ -195,6 +196,8 @@ The command line interface supports the following options::
[--ceph-vip CEPH_VIP]
[--daemons DAEMONS]
[--single-host-defaults]
[--ntp-server NTP_SERVER]
[--ntp-heat-env-file NTP_HEAT_ENV_FILE]
[--ceph-spec CEPH_SPEC | --osd-spec OSD_SPEC]
[--crush-hierarchy CRUSH_HIERARCHY]
[--standalone]
@ -227,6 +230,9 @@ The command line interface supports the following options::
--skip-hosts-config Do not update /etc/hosts on deployed servers. By
default this is configured so overcloud nodes can
reach each other and the undercloud by name.
--skip-ntp Do not install/enable ntp chronyd service. By default
time synchronization service chronyd is installed and
enabled later by tripleo.
--skip-container-registry-config
Do not update /etc/containers/registries.conf on
deployed servers. By default this is configured so
@ -330,6 +336,14 @@ The command line interface supports the following options::
--single-host-defaults
Adjust configuration defaults to suit a single-host
Ceph cluster.
--ntp-server NTP_SERVER
NTP Servers to be used while configuring chronyd
service. e.g. --ntp-server '0.pool.ntp.org,
1.pool.ntp.org,2.pool.ntp.org'
--ntp-heat-env-file NTP_HEAT_ENV_FILE
Path to existing heat environment file with NTP
servers to be used while configuring chronyd service.
NTP servers are extracted from 'NtpServer' key.
--ceph-spec CEPH_SPEC
Path to an existing Ceph spec file. If not provided a
spec will be generated automatically based on --roles-
@ -1133,6 +1147,39 @@ If a variable above is unused, then it defaults to the ones found in
the default ``container_image_prepare_defaults.yaml`` file. In other
words, the above options are overrides.
NTP configuration
-----------------
To help Ceph monitors to form a quorum, time synchronization is configured
before Ceph deployment.
By default `openstack overcloud ceph deploy` installs and enables
time synchronization service (chrony) unless `--skip-ntp` is used.
Chrony uses NTP servers defined in ansible-role-chrony role by default.
NTP server/s can be configured explicitly by using either
`--ntp-server` or `--ntp-heat-env-file`.
NTP servers can be passed as a comma-separated string to the deploy command,
for example::
openstack overcloud ceph deploy \
--ntp-server "0.pool.ntp.org,1.pool.ntp.org"
Alternatively, a heat env file which contains the list of NTP servers
can be used as shown here::
openstack overcloud ceph deploy \
--ntp-heat-env-file "/home/stack/ntp-parameters.yaml"
where ntp-parameter.yaml should have the NTP servers defined in the parameter
`NtpServer` as shown in the example::
parameter_defaults:
NtpServer: 0.pool.ntp.org,1.pool.ntp.org
Creating Pools and CephX keys before overcloud deployment (Optional)
--------------------------------------------------------------------