openstack
/
charm-ceph-proxy
Code Issues Proposed changes

merging lp:~james-page/charms/precise/ceph/charm-helpers as per https://code.launchpad.net/~james-page/charms/precise/ceph/charm-helpers/+merge/173245

This commit is contained in:
Mark Mims 2013-07-14 13:46:24 -06:00
parent 34eff91995 f66d3d9500
commit 8854dea218
18 changed files with 1124 additions and 415 deletions
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4
.pydevproject
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@ -1,7 +1,5 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?eclipse-pydev version="1.0"?>
<pydev_project>
<?eclipse-pydev version="1.0"?><pydev_project>
<pydev_property name="org.python.pydev.PYTHON_PROJECT_VERSION">python 2.7</pydev_property>
<pydev_property name="org.python.pydev.PYTHON_PROJECT_INTERPRETER">Default</pydev_property>
<pydev_pathproperty name="org.python.pydev.PROJECT_SOURCE_PATH">

8
Makefile Normal file
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@ -0,0 +1,8 @@
#!/usr/bin/make
lint:
@flake8 --exclude hooks/charmhelpers hooks
@charm proof
sync:
@charm-helper-sync -c charm-helpers-sync.yaml

18
README.md
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@ -15,28 +15,28 @@ are provided:
fsid:
uuid specific to a ceph cluster used to ensure that different
clusters don't get mixed up - use `uuid` to generate one.
monitor-secret:
a ceph generated key used by the daemons that manage to cluster
to control security. You can use the ceph-authtool command to
generate one:
ceph-authtool /dev/stdout --name=mon. --gen-key
These two pieces of configuration must NOT be changed post bootstrap; attempting
todo this will cause a reconfiguration error and new service units will not join
the existing ceph cluster.
The charm also supports specification of the storage devices to use in the ceph
cluster.
osd-devices:
A list of devices that the charm will attempt to detect, initialise and
activate as ceph storage.
This this can be a superset of the actual storage devices presented to
each service unit and can be changed post ceph bootstrap using `juju set`.
At a minimum you must provide a juju config file during initial deployment
with the fsid and monitor-secret options (contents of cepy.yaml below):
@ -44,7 +44,7 @@ with the fsid and monitor-secret options (contents of cepy.yaml below):
fsid: ecbb8960-0e21-11e2-b495-83a88f44db01
monitor-secret: AQD1P2xQiKglDhAA4NGUF5j38Mhq56qwz+45wg==
osd-devices: /dev/vdb /dev/vdc /dev/vdd /dev/vde
Specifying the osd-devices to use is also a good idea.
Boot things up by using:
@ -62,7 +62,7 @@ Author: Paul Collins <paul.collins@canonical.com>,
James Page <james.page@ubuntu.com>
Report bugs at: http://bugs.launchpad.net/charms/+source/ceph/+filebug
Location: http://jujucharms.com/charms/ceph
Technical Bootnotes
===================
@ -89,4 +89,4 @@ all OSDs run on nodes that also run mon, we don't need this and did not
implement it.
See http://ceph.com/docs/master/dev/mon-bootstrap/ for more information on Ceph
monitor cluster deployment strategies and pitfalls.
monitor cluster deployment strategies and pitfalls.

7
charm-helpers-sync.yaml Normal file
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@ -0,0 +1,7 @@
branch: lp:charm-helpers
destination: hooks/charmhelpers
include:
- core
- fetch
- contrib.storage.linux:
- utils

152
hooks/ceph.py
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@ -10,23 +10,36 @@
import json
import subprocess
import time
import utils
import os
import apt_pkg as apt
from charmhelpers.core.host import (
mkdir,
service_restart,
log
)
from charmhelpers.contrib.storage.linux.utils import (
zap_disk,
is_block_device
)
from utils import (
get_unit_hostname
)
LEADER = 'leader'
PEON = 'peon'
QUORUM = [LEADER, PEON]
PACKAGES = ['ceph', 'gdisk', 'ntp', 'btrfs-tools', 'python-ceph', 'xfsprogs']
def is_quorum():
asok = "/var/run/ceph/ceph-mon.{}.asok".format(utils.get_unit_hostname())
asok = "/var/run/ceph/ceph-mon.{}.asok".format(get_unit_hostname())
cmd = [
"ceph",
"--admin-daemon",
asok,
"mon_status"
]
]
if os.path.exists(asok):
try:
result = json.loads(subprocess.check_output(cmd))
@ -44,13 +57,13 @@ def is_quorum():
def is_leader():
asok = "/var/run/ceph/ceph-mon.{}.asok".format(utils.get_unit_hostname())
asok = "/var/run/ceph/ceph-mon.{}.asok".format(get_unit_hostname())
cmd = [
"ceph",
"--admin-daemon",
asok,
"mon_status"
]
]
if os.path.exists(asok):
try:
result = json.loads(subprocess.check_output(cmd))
@ -73,14 +86,14 @@ def wait_for_quorum():
def add_bootstrap_hint(peer):
asok = "/var/run/ceph/ceph-mon.{}.asok".format(utils.get_unit_hostname())
asok = "/var/run/ceph/ceph-mon.{}.asok".format(get_unit_hostname())
cmd = [
"ceph",
"--admin-daemon",
asok,
"add_bootstrap_peer_hint",
peer
]
]
if os.path.exists(asok):
# Ignore any errors for this call
subprocess.call(cmd)
@ -89,7 +102,7 @@ DISK_FORMATS = [
'xfs',
'ext4',
'btrfs'
]
]
def is_osd_disk(dev):
@ -99,7 +112,7 @@ def is_osd_disk(dev):
for line in info:
if line.startswith(
'Partition GUID code: 4FBD7E29-9D25-41B8-AFD0-062C0CEFF05D'
):
):
return True
except subprocess.CalledProcessError:
pass
@ -110,16 +123,11 @@ def rescan_osd_devices():
cmd = [
'udevadm', 'trigger',
'--subsystem-match=block', '--action=add'
]
]
subprocess.call(cmd)
def zap_disk(dev):
cmd = ['sgdisk', '--zap-all', dev]
subprocess.check_call(cmd)
_bootstrap_keyring = "/var/lib/ceph/bootstrap-osd/ceph.keyring"
@ -140,7 +148,7 @@ def import_osd_bootstrap_key(key):
'--create-keyring',
'--name=client.bootstrap-osd',
'--add-key={}'.format(key)
]
]
subprocess.check_call(cmd)
# OSD caps taken from ceph-create-keys
@ -148,10 +156,10 @@ _osd_bootstrap_caps = {
'mon': [
'allow command osd create ...',
'allow command osd crush set ...',
r'allow command auth add * osd allow\ * mon allow\ rwx',
r'allow command auth add * osd allow\ * mon allow\ rwx',
'allow command mon getmap'
]
}
]
}
def get_osd_bootstrap_key():
@ -169,14 +177,14 @@ def import_radosgw_key(key):
'--create-keyring',
'--name=client.radosgw.gateway',
'--add-key={}'.format(key)
]
]
subprocess.check_call(cmd)
# OSD caps taken from ceph-create-keys
_radosgw_caps = {
'mon': ['allow r'],
'osd': ['allow rwx']
}
}
def get_radosgw_key():
@ -186,7 +194,7 @@ def get_radosgw_key():
_default_caps = {
'mon': ['allow r'],
'osd': ['allow rwx']
}
}
def get_named_key(name, caps=None):
@ -196,16 +204,16 @@ def get_named_key(name, caps=None):
'--name', 'mon.',
'--keyring',
'/var/lib/ceph/mon/ceph-{}/keyring'.format(
utils.get_unit_hostname()
),
get_unit_hostname()
),
'auth', 'get-or-create', 'client.{}'.format(name),
]
]
# Add capabilities
for subsystem, subcaps in caps.iteritems():
cmd.extend([
subsystem,
'; '.join(subcaps),
])
])
output = subprocess.check_output(cmd).strip() # IGNORE:E1103
# get-or-create appears to have different output depending
# on whether its 'get' or 'create'
@ -221,6 +229,42 @@ def get_named_key(name, caps=None):
return key
def bootstrap_monitor_cluster(secret):
hostname = get_unit_hostname()
path = '/var/lib/ceph/mon/ceph-{}'.format(hostname)
done = '{}/done'.format(path)
upstart = '{}/upstart'.format(path)
keyring = '/var/lib/ceph/tmp/{}.mon.keyring'.format(hostname)
if os.path.exists(done):
log('bootstrap_monitor_cluster: mon already initialized.')
else:
# Ceph >= 0.61.3 needs this for ceph-mon fs creation
mkdir('/var/run/ceph', perms=0755)
mkdir(path)
# end changes for Ceph >= 0.61.3
try:
subprocess.check_call(['ceph-authtool', keyring,
'--create-keyring', '--name=mon.',
'--add-key={}'.format(secret),
'--cap', 'mon', 'allow *'])
subprocess.check_call(['ceph-mon', '--mkfs',
'-i', hostname,
'--keyring', keyring])
with open(done, 'w'):
pass
with open(upstart, 'w'):
pass
service_restart('ceph-mon-all')
except:
raise
finally:
os.unlink(keyring)
def get_ceph_version():
apt.init()
cache = apt.Cache()
@ -233,3 +277,59 @@ def get_ceph_version():
def version_compare(a, b):
return apt.version_compare(a, b)
def update_monfs():
hostname = get_unit_hostname()
monfs = '/var/lib/ceph/mon/ceph-{}'.format(hostname)
upstart = '{}/upstart'.format(monfs)
if os.path.exists(monfs) and not os.path.exists(upstart):
# Mark mon as managed by upstart so that
# it gets start correctly on reboots
with open(upstart, 'w'):
pass
def osdize(dev, osd_format, osd_journal, reformat_osd=False):
if not os.path.exists(dev):
log('Path {} does not exist - bailing'.format(dev))
return
if not is_block_device(dev):
log('Path {} is not a block device - bailing'.format(dev))
return
if (is_osd_disk(dev) and not reformat_osd):
log('Looks like {} is already an OSD, skipping.'.format(dev))
return
if device_mounted(dev):
log('Looks like {} is in use, skipping.'.format(dev))
return
cmd = ['ceph-disk-prepare']
# Later versions of ceph support more options
if get_ceph_version() >= "0.48.3":
if osd_format:
cmd.append('--fs-type')
cmd.append(osd_format)
cmd.append(dev)
if osd_journal and os.path.exists(osd_journal):
cmd.append(osd_journal)
else:
# Just provide the device - no other options
# for older versions of ceph
cmd.append(dev)
if reformat_osd:
zap_disk(dev)
subprocess.check_call(cmd)
def device_mounted(dev):
return subprocess.call(['grep', '-wqs', dev + '1', '/proc/mounts']) == 0
def filesystem_mounted(fs):
return subprocess.call(['grep', '-wqs', fs, '/proc/mounts']) == 0

0
hooks/charmhelpers/__init__.py Normal file
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0
hooks/charmhelpers/contrib/__init__.py Normal file
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0
hooks/charmhelpers/contrib/storage/__init__.py Normal file
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0
hooks/charmhelpers/contrib/storage/linux/__init__.py Normal file
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25
hooks/charmhelpers/contrib/storage/linux/utils.py Normal file
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@ -0,0 +1,25 @@
from os import stat
from stat import S_ISBLK
from subprocess import (
check_call
)
def is_block_device(path):
'''
Confirm device at path is a valid block device node.
:returns: boolean: True if path is a block device, False if not.
'''
return S_ISBLK(stat(path).st_mode)
def zap_disk(block_device):
'''
Clear a block device of partition table. Relies on sgdisk, which is
installed as pat of the 'gdisk' package in Ubuntu.
:param block_device: str: Full path of block device to clean.
'''
check_call(['sgdisk', '--zap-all', block_device])

0
hooks/charmhelpers/core/__init__.py Normal file
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334
hooks/charmhelpers/core/hookenv.py Normal file
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@ -0,0 +1,334 @@
"Interactions with the Juju environment"
# Copyright 2013 Canonical Ltd.
#
# Authors:
# Charm Helpers Developers <juju@lists.ubuntu.com>
import os
import json
import yaml
import subprocess
import UserDict
CRITICAL = "CRITICAL"
ERROR = "ERROR"
WARNING = "WARNING"
INFO = "INFO"
DEBUG = "DEBUG"
MARKER = object()
cache = {}
def cached(func):
''' Cache return values for multiple executions of func + args
For example:
@cached
def unit_get(attribute):
pass
unit_get('test')
will cache the result of unit_get + 'test' for future calls.
'''
def wrapper(*args, **kwargs):
global cache
key = str((func, args, kwargs))
try:
return cache[key]
except KeyError:
res = func(*args, **kwargs)
cache[key] = res
return res
return wrapper
def flush(key):
''' Flushes any entries from function cache where the
key is found in the function+args '''
flush_list = []
for item in cache:
if key in item:
flush_list.append(item)
for item in flush_list:
del cache[item]
def log(message, level=None):
"Write a message to the juju log"
command = ['juju-log']
if level:
command += ['-l', level]
command += [message]
subprocess.call(command)
class Serializable(UserDict.IterableUserDict):
"Wrapper, an object that can be serialized to yaml or json"
def __init__(self, obj):
# wrap the object
UserDict.IterableUserDict.__init__(self)
self.data = obj
def __getattr__(self, attr):
# See if this object has attribute.
if attr in ("json", "yaml", "data"):
return self.__dict__[attr]
# Check for attribute in wrapped object.
got = getattr(self.data, attr, MARKER)
if got is not MARKER:
return got
# Proxy to the wrapped object via dict interface.
try:
return self.data[attr]
except KeyError:
raise AttributeError(attr)
def __getstate__(self):
# Pickle as a standard dictionary.
return self.data
def __setstate__(self, state):
# Unpickle into our wrapper.
self.data = state
def json(self):
"Serialize the object to json"
return json.dumps(self.data)
def yaml(self):
"Serialize the object to yaml"
return yaml.dump(self.data)
def execution_environment():
"""A convenient bundling of the current execution context"""
context = {}
context['conf'] = config()
if relation_id():
context['reltype'] = relation_type()
context['relid'] = relation_id()
context['rel'] = relation_get()
context['unit'] = local_unit()
context['rels'] = relations()
context['env'] = os.environ
return context
def in_relation_hook():
"Determine whether we're running in a relation hook"
return 'JUJU_RELATION' in os.environ
def relation_type():
"The scope for the current relation hook"
return os.environ.get('JUJU_RELATION', None)
def relation_id():
"The relation ID for the current relation hook"
return os.environ.get('JUJU_RELATION_ID', None)
def local_unit():
"Local unit ID"
return os.environ['JUJU_UNIT_NAME']
def remote_unit():
"The remote unit for the current relation hook"
return os.environ['JUJU_REMOTE_UNIT']
@cached
def config(scope=None):
"Juju charm configuration"
config_cmd_line = ['config-get']
if scope is not None:
config_cmd_line.append(scope)
config_cmd_line.append('--format=json')
try:
return json.loads(subprocess.check_output(config_cmd_line))
except ValueError:
return None
@cached
def relation_get(attribute=None, unit=None, rid=None):
_args = ['relation-get', '--format=json']
if rid:
_args.append('-r')
_args.append(rid)
_args.append(attribute or '-')
if unit:
_args.append(unit)
try:
return json.loads(subprocess.check_output(_args))
except ValueError:
return None
def relation_set(relation_id=None, relation_settings={}, **kwargs):
relation_cmd_line = ['relation-set']
if relation_id is not None:
relation_cmd_line.extend(('-r', relation_id))
for k, v in (relation_settings.items() + kwargs.items()):
if v is None:
relation_cmd_line.append('{}='.format(k))
else:
relation_cmd_line.append('{}={}'.format(k, v))
subprocess.check_call(relation_cmd_line)
# Flush cache of any relation-gets for local unit
flush(local_unit())
@cached
def relation_ids(reltype=None):
"A list of relation_ids"
reltype = reltype or relation_type()
relid_cmd_line = ['relation-ids', '--format=json']
if reltype is not None:
relid_cmd_line.append(reltype)
return json.loads(subprocess.check_output(relid_cmd_line))
return []
@cached
def related_units(relid=None):
"A list of related units"
relid = relid or relation_id()
units_cmd_line = ['relation-list', '--format=json']
if relid is not None:
units_cmd_line.extend(('-r', relid))
return json.loads(subprocess.check_output(units_cmd_line))
@cached
def relation_for_unit(unit=None, rid=None):
"Get the json represenation of a unit's relation"
unit = unit or remote_unit()
relation = relation_get(unit=unit, rid=rid)
for key in relation:
if key.endswith('-list'):
relation[key] = relation[key].split()
relation['__unit__'] = unit
return relation
@cached
def relations_for_id(relid=None):
"Get relations of a specific relation ID"
relation_data = []
relid = relid or relation_ids()
for unit in related_units(relid):
unit_data = relation_for_unit(unit, relid)
unit_data['__relid__'] = relid
relation_data.append(unit_data)
return relation_data
@cached
def relations_of_type(reltype=None):
"Get relations of a specific type"
relation_data = []
reltype = reltype or relation_type()
for relid in relation_ids(reltype):
for relation in relations_for_id(relid):
relation['__relid__'] = relid
relation_data.append(relation)
return relation_data
@cached
def relation_types():
"Get a list of relation types supported by this charm"
charmdir = os.environ.get('CHARM_DIR', '')
mdf = open(os.path.join(charmdir, 'metadata.yaml'))
md = yaml.safe_load(mdf)
rel_types = []
for key in ('provides', 'requires', 'peers'):
section = md.get(key)
if section:
rel_types.extend(section.keys())
mdf.close()
return rel_types
@cached
def relations():
rels = {}
for reltype in relation_types():
relids = {}
for relid in relation_ids(reltype):
units = {local_unit(): relation_get(unit=local_unit(), rid=relid)}
for unit in related_units(relid):
reldata = relation_get(unit=unit, rid=relid)
units[unit] = reldata
relids[relid] = units
rels[reltype] = relids
return rels
def open_port(port, protocol="TCP"):
"Open a service network port"
_args = ['open-port']
_args.append('{}/{}'.format(port, protocol))
subprocess.check_call(_args)
def close_port(port, protocol="TCP"):
"Close a service network port"
_args = ['close-port']
_args.append('{}/{}'.format(port, protocol))
subprocess.check_call(_args)
@cached
def unit_get(attribute):
_args = ['unit-get', '--format=json', attribute]
try:
return json.loads(subprocess.check_output(_args))
except ValueError:
return None
def unit_private_ip():
return unit_get('private-address')
class UnregisteredHookError(Exception):
pass
class Hooks(object):
def __init__(self):
super(Hooks, self).__init__()
self._hooks = {}
def register(self, name, function):
self._hooks[name] = function
def execute(self, args):
hook_name = os.path.basename(args[0])
if hook_name in self._hooks:
self._hooks[hook_name]()
else:
raise UnregisteredHookError(hook_name)
def hook(self, *hook_names):
def wrapper(decorated):
for hook_name in hook_names:
self.register(hook_name, decorated)
else:
self.register(decorated.__name__, decorated)
if '_' in decorated.__name__:
self.register(
decorated.__name__.replace('_', '-'), decorated)
return decorated
return wrapper
def charm_dir():
return os.environ.get('CHARM_DIR')

273
hooks/charmhelpers/core/host.py Normal file
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@ -0,0 +1,273 @@
"""Tools for working with the host system"""
# Copyright 2012 Canonical Ltd.
#
# Authors:
# Nick Moffitt <nick.moffitt@canonical.com>
# Matthew Wedgwood <matthew.wedgwood@canonical.com>
import apt_pkg
import os
import pwd
import grp
import subprocess
import hashlib
from collections import OrderedDict
from hookenv import log, execution_environment
def service_start(service_name):
service('start', service_name)
def service_stop(service_name):
service('stop', service_name)
def service_restart(service_name):
service('restart', service_name)
def service_reload(service_name, restart_on_failure=False):
if not service('reload', service_name) and restart_on_failure:
service('restart', service_name)
def service(action, service_name):
cmd = ['service', service_name, action]
return subprocess.call(cmd) == 0
def adduser(username, password=None, shell='/bin/bash', system_user=False):
"""Add a user"""
try:
user_info = pwd.getpwnam(username)
log('user {0} already exists!'.format(username))
except KeyError:
log('creating user {0}'.format(username))
cmd = ['useradd']
if system_user or password is None:
cmd.append('--system')
else:
cmd.extend([
'--create-home',
'--shell', shell,
'--password', password,
])
cmd.append(username)
subprocess.check_call(cmd)
user_info = pwd.getpwnam(username)
return user_info
def add_user_to_group(username, group):
"""Add a user to a group"""
cmd = [
'gpasswd', '-a',
username,
group
]
log("Adding user {} to group {}".format(username, group))
subprocess.check_call(cmd)
def rsync(from_path, to_path, flags='-r', options=None):
"""Replicate the contents of a path"""
context = execution_environment()
options = options or ['--delete', '--executability']
cmd = ['/usr/bin/rsync', flags]
cmd.extend(options)
cmd.append(from_path.format(**context))
cmd.append(to_path.format(**context))
log(" ".join(cmd))
return subprocess.check_output(cmd).strip()
def symlink(source, destination):
"""Create a symbolic link"""
context = execution_environment()
log("Symlinking {} as {}".format(source, destination))
cmd = [
'ln',
'-sf',
source.format(**context),
destination.format(**context)
]
subprocess.check_call(cmd)
def mkdir(path, owner='root', group='root', perms=0555, force=False):
"""Create a directory"""
context = execution_environment()
log("Making dir {} {}:{} {:o}".format(path, owner, group,
perms))
uid = pwd.getpwnam(owner.format(**context)).pw_uid
gid = grp.getgrnam(group.format(**context)).gr_gid
realpath = os.path.abspath(path)
if os.path.exists(realpath):
if force and not os.path.isdir(realpath):
log("Removing non-directory file {} prior to mkdir()".format(path))
os.unlink(realpath)
else:
os.makedirs(realpath, perms)
os.chown(realpath, uid, gid)
def write_file(path, fmtstr, owner='root', group='root', perms=0444, **kwargs):
"""Create or overwrite a file with the contents of a string"""
context = execution_environment()
context.update(kwargs)
log("Writing file {} {}:{} {:o}".format(path, owner, group,
perms))
uid = pwd.getpwnam(owner.format(**context)).pw_uid
gid = grp.getgrnam(group.format(**context)).gr_gid
with open(path.format(**context), 'w') as target:
os.fchown(target.fileno(), uid, gid)
os.fchmod(target.fileno(), perms)
target.write(fmtstr.format(**context))
def render_template_file(source, destination, **kwargs):
"""Create or overwrite a file using a template"""
log("Rendering template {} for {}".format(source,
destination))
context = execution_environment()
with open(source.format(**context), 'r') as template:
write_file(destination.format(**context), template.read(),
**kwargs)
def filter_installed_packages(packages):
"""Returns a list of packages that require installation"""
apt_pkg.init()
cache = apt_pkg.Cache()
_pkgs = []
for package in packages:
try:
p = cache[package]
p.current_ver or _pkgs.append(package)
except KeyError:
log('Package {} has no installation candidate.'.format(package),
level='WARNING')
_pkgs.append(package)
return _pkgs
def apt_install(packages, options=None, fatal=False):
"""Install one or more packages"""
options = options or []
cmd = ['apt-get', '-y']
cmd.extend(options)
cmd.append('install')
if isinstance(packages, basestring):
cmd.append(packages)
else:
cmd.extend(packages)
log("Installing {} with options: {}".format(packages,
options))
if fatal:
subprocess.check_call(cmd)
else:
subprocess.call(cmd)
def apt_update(fatal=False):
"""Update local apt cache"""
cmd = ['apt-get', 'update']
if fatal:
subprocess.check_call(cmd)
else:
subprocess.call(cmd)
def mount(device, mountpoint, options=None, persist=False):
'''Mount a filesystem'''
cmd_args = ['mount']
if options is not None:
cmd_args.extend(['-o', options])
cmd_args.extend([device, mountpoint])
try:
subprocess.check_output(cmd_args)
except subprocess.CalledProcessError, e:
log('Error mounting {} at {}\n{}'.format(device, mountpoint, e.output))
return False
if persist:
# TODO: update fstab
pass
return True
def umount(mountpoint, persist=False):
'''Unmount a filesystem'''
cmd_args = ['umount', mountpoint]
try:
subprocess.check_output(cmd_args)
except subprocess.CalledProcessError, e:
log('Error unmounting {}\n{}'.format(mountpoint, e.output))
return False
if persist:
# TODO: update fstab
pass
return True
def mounts():
'''List of all mounted volumes as [[mountpoint,device],[...]]'''
with open('/proc/mounts') as f:
# [['/mount/point','/dev/path'],[...]]
system_mounts = [m[1::-1] for m in [l.strip().split()
for l in f.readlines()]]
return system_mounts
def file_hash(path):
''' Generate a md5 hash of the contents of 'path' or None if not found '''
if os.path.exists(path):
h = hashlib.md5()
with open(path, 'r') as source:
h.update(source.read()) # IGNORE:E1101 - it does have update
return h.hexdigest()
else:
return None
def restart_on_change(restart_map):
''' Restart services based on configuration files changing
This function is used a decorator, for example
@restart_on_change({
'/etc/ceph/ceph.conf': [ 'cinder-api', 'cinder-volume' ]
})
def ceph_client_changed():
...
In this example, the cinder-api and cinder-volume services
would be restarted if /etc/ceph/ceph.conf is changed by the
ceph_client_changed function.
'''
def wrap(f):
def wrapped_f(*args):
checksums = {}
for path in restart_map:
checksums[path] = file_hash(path)
f(*args)
restarts = []
for path in restart_map:
if checksums[path] != file_hash(path):
restarts += restart_map[path]
for service_name in list(OrderedDict.fromkeys(restarts)):
service('restart', service_name)
return wrapped_f
return wrap
def lsb_release():
'''Return /etc/lsb-release in a dict'''
d = {}
with open('/etc/lsb-release', 'r') as lsb:
for l in lsb:
k, v = l.split('=')
d[k.strip()] = v.strip()
return d

152
hooks/charmhelpers/fetch/__init__.py Normal file
View File

@ -0,0 +1,152 @@
import importlib
from yaml import safe_load
from charmhelpers.core.host import (
apt_install,
apt_update,
filter_installed_packages,
lsb_release
)
from urlparse import (
urlparse,
urlunparse,
)
import subprocess
from charmhelpers.core.hookenv import (
config,
log,
)
CLOUD_ARCHIVE = """# Ubuntu Cloud Archive
deb http://ubuntu-cloud.archive.canonical.com/ubuntu {} main
"""
PROPOSED_POCKET = """# Proposed
deb http://archive.ubuntu.com/ubuntu {}-proposed main universe multiverse restricted
"""
def add_source(source, key=None):
if ((source.startswith('ppa:') or
source.startswith('http:'))):
subprocess.check_call(['add-apt-repository', source])
elif source.startswith('cloud:'):
apt_install(filter_installed_packages(['ubuntu-cloud-keyring']),
fatal=True)
pocket = source.split(':')[-1]
with open('/etc/apt/sources.list.d/cloud-archive.list', 'w') as apt:
apt.write(CLOUD_ARCHIVE.format(pocket))
elif source == 'proposed':
release = lsb_release()['DISTRIB_CODENAME']
with open('/etc/apt/sources.list.d/proposed.list', 'w') as apt:
apt.write(PROPOSED_POCKET.format(release))
if key:
subprocess.check_call(['apt-key', 'import', key])
class SourceConfigError(Exception):
pass
def configure_sources(update=False,
sources_var='install_sources',
keys_var='install_keys'):
"""
Configure multiple sources from charm configuration
Example config:
install_sources:
- "ppa:foo"
- "http://example.com/repo precise main"
install_keys:
- null
- "a1b2c3d4"
Note that 'null' (a.k.a. None) should not be quoted.
"""
sources = safe_load(config(sources_var))
keys = safe_load(config(keys_var))
if isinstance(sources, basestring) and isinstance(keys, basestring):
add_source(sources, keys)
else:
if not len(sources) == len(keys):
msg = 'Install sources and keys lists are different lengths'
raise SourceConfigError(msg)
for src_num in range(len(sources)):
add_source(sources[src_num], keys[src_num])
if update:
apt_update(fatal=True)
# The order of this list is very important. Handlers should be listed in from
# least- to most-specific URL matching.
FETCH_HANDLERS = (
'charmhelpers.fetch.archiveurl.ArchiveUrlFetchHandler',
)
class UnhandledSource(Exception):
pass
def install_remote(source):
"""
Install a file tree from a remote source
The specified source should be a url of the form:
scheme://[host]/path[#[option=value][&...]]
Schemes supported are based on this modules submodules
Options supported are submodule-specific"""
# We ONLY check for True here because can_handle may return a string
# explaining why it can't handle a given source.
handlers = [h for h in plugins() if h.can_handle(source) is True]
for handler in handlers:
try:
installed_to = handler.install(source)
except UnhandledSource:
pass
if not installed_to:
raise UnhandledSource("No handler found for source {}".format(source))
return installed_to
def install_from_config(config_var_name):
charm_config = config()
source = charm_config[config_var_name]
return install_remote(source)
class BaseFetchHandler(object):
"""Base class for FetchHandler implementations in fetch plugins"""
def can_handle(self, source):
"""Returns True if the source can be handled. Otherwise returns
a string explaining why it cannot"""
return "Wrong source type"
def install(self, source):
"""Try to download and unpack the source. Return the path to the
unpacked files or raise UnhandledSource."""
raise UnhandledSource("Wrong source type {}".format(source))
def parse_url(self, url):
return urlparse(url)
def base_url(self, url):
"""Return url without querystring or fragment"""
parts = list(self.parse_url(url))
parts[4:] = ['' for i in parts[4:]]
return urlunparse(parts)
def plugins(fetch_handlers=None):
if not fetch_handlers:
fetch_handlers = FETCH_HANDLERS
plugin_list = []
for handler_name in fetch_handlers:
package, classname = handler_name.rsplit('.', 1)
try:
handler_class = getattr(importlib.import_module(package), classname)
plugin_list.append(handler_class())
except (ImportError, AttributeError):
# Skip missing plugins so that they can be ommitted from
# installation if desired
log("FetchHandler {} not found, skipping plugin".format(handler_name))
return plugin_list

43
hooks/charmhelpers/fetch/archiveurl.py Normal file
View File

@ -0,0 +1,43 @@
import os
import urllib2
from charmhelpers.fetch import (
BaseFetchHandler,
UnhandledSource
)
from charmhelpers.payload.archive import (
get_archive_handler,
extract,
)
class ArchiveUrlFetchHandler(BaseFetchHandler):
"""Handler for archives via generic URLs"""
def can_handle(self, source):
url_parts = self.parse_url(source)
if url_parts.scheme not in ('http', 'https', 'ftp', 'file'):
return "Wrong source type"
if get_archive_handler(self.base_url(source)):
return True
return False
def download(self, source, dest):
# propogate all exceptions
# URLError, OSError, etc
response = urllib2.urlopen(source)
with open(dest, 'w') as dest_file:
dest_file.write(response.read())
def install(self, source):
url_parts = self.parse_url(source)
dest_dir = os.path.join(os.environ.get('CHARM_DIR'), 'fetched')
dld_file = os.path.join(dest_dir, os.path.basename(url_parts.path))
try:
self.download(source, dld_file)
except urllib2.URLError as e:
return UnhandledSource(e.reason)
except OSError as e:
return UnhandledSource(e.strerror)
finally:
if os.path.isfile(dld_file):
os.unlink(dld_file)
return extract(dld_file)

340
hooks/hooks.py
View File

@ -10,12 +10,35 @@
import glob
import os
import subprocess
import shutil
import sys
import ceph
import utils
from charmhelpers.core.hookenv import (
log, ERROR,
config,
relation_ids,
related_units,
relation_get,
relation_set,
remote_unit,
Hooks, UnregisteredHookError
)
from charmhelpers.core.host import (
apt_install,
apt_update,
filter_installed_packages,
service_restart,
umount
)
from charmhelpers.fetch import add_source
from utils import (
render_template,
get_host_ip,
)
hooks = Hooks()
def install_upstart_scripts():
@ -25,328 +48,221 @@ def install_upstart_scripts():
shutil.copy(x, '/etc/init/')
@hooks.hook('install')
def install():
utils.juju_log('INFO', 'Begin install hook.')
utils.configure_source()
utils.install('ceph', 'gdisk', 'ntp', 'btrfs-tools', 'python-ceph', 'xfsprogs')
log('Begin install hook.')
add_source(config('source'), config('key'))
apt_update(fatal=True)
apt_install(packages=ceph.PACKAGES, fatal=True)
install_upstart_scripts()
utils.juju_log('INFO', 'End install hook.')
log('End install hook.')
def emit_cephconf():
cephcontext = {
'auth_supported': utils.config_get('auth-supported'),
'auth_supported': config('auth-supported'),
'mon_hosts': ' '.join(get_mon_hosts()),
'fsid': utils.config_get('fsid'),
'fsid': config('fsid'),
'version': ceph.get_ceph_version()
}
}
with open('/etc/ceph/ceph.conf', 'w') as cephconf:
cephconf.write(utils.render_template('ceph.conf', cephcontext))
cephconf.write(render_template('ceph.conf', cephcontext))
JOURNAL_ZAPPED = '/var/lib/ceph/journal_zapped'
@hooks.hook('config-changed')
def config_changed():
utils.juju_log('INFO', 'Begin config-changed hook.')
log('Begin config-changed hook.')
utils.juju_log('INFO', 'Monitor hosts are ' + repr(get_mon_hosts()))
log('Monitor hosts are ' + repr(get_mon_hosts()))
# Pre-flight checks
if not utils.config_get('fsid'):
utils.juju_log('CRITICAL', 'No fsid supplied, cannot proceed.')
if not config('fsid'):
log('No fsid supplied, cannot proceed.', level=ERROR)
sys.exit(1)
if not utils.config_get('monitor-secret'):
utils.juju_log('CRITICAL',
'No monitor-secret supplied, cannot proceed.')
if not config('monitor-secret'):
log('No monitor-secret supplied, cannot proceed.', level=ERROR)
sys.exit(1)
if utils.config_get('osd-format') not in ceph.DISK_FORMATS:
utils.juju_log('CRITICAL',
'Invalid OSD disk format configuration specified')
if config('osd-format') not in ceph.DISK_FORMATS:
log('Invalid OSD disk format configuration specified', level=ERROR)
sys.exit(1)
emit_cephconf()
e_mountpoint = utils.config_get('ephemeral-unmount')
if (e_mountpoint and
filesystem_mounted(e_mountpoint)):
subprocess.call(['umount', e_mountpoint])
e_mountpoint = config('ephemeral-unmount')
if e_mountpoint and ceph.filesystem_mounted(e_mountpoint):
umount(e_mountpoint)
osd_journal = utils.config_get('osd-journal')
if (osd_journal and
not os.path.exists(JOURNAL_ZAPPED) and
os.path.exists(osd_journal)):
osd_journal = config('osd-journal')
if (osd_journal and not os.path.exists(JOURNAL_ZAPPED)
and os.path.exists(osd_journal)):
ceph.zap_disk(osd_journal)
with open(JOURNAL_ZAPPED, 'w') as zapped:
zapped.write('DONE')
for dev in utils.config_get('osd-devices').split(' '):
osdize(dev)
for dev in config('osd-devices').split(' '):
ceph.osdize(dev, config('osd-format'), config('osd-journal'),
reformat_osd())
# Support use of single node ceph
if (not ceph.is_bootstrapped() and
int(utils.config_get('monitor-count')) == 1):
bootstrap_monitor_cluster()
if (not ceph.is_bootstrapped() and int(config('monitor-count')) == 1):
ceph.bootstrap_monitor_cluster(config('monitor-secret'))
ceph.wait_for_bootstrap()
if ceph.is_bootstrapped():
ceph.rescan_osd_devices()
utils.juju_log('INFO', 'End config-changed hook.')
log('End config-changed hook.')
def get_mon_hosts():
hosts = []
hosts.append('{}:6789'.format(utils.get_host_ip()))
hosts.append('{}:6789'.format(get_host_ip()))
for relid in utils.relation_ids('mon'):
for unit in utils.relation_list(relid):
for relid in relation_ids('mon'):
for unit in related_units(relid):
hosts.append(
'{}:6789'.format(utils.get_host_ip(
utils.relation_get('private-address',
unit, relid)))
)
'{}:6789'.format(get_host_ip(relation_get('private-address',
unit, relid)))
)
hosts.sort()
return hosts
def update_monfs():
hostname = utils.get_unit_hostname()
monfs = '/var/lib/ceph/mon/ceph-{}'.format(hostname)
upstart = '{}/upstart'.format(monfs)
if (os.path.exists(monfs) and
not os.path.exists(upstart)):
# Mark mon as managed by upstart so that
# it gets start correctly on reboots
with open(upstart, 'w'):
pass
def bootstrap_monitor_cluster():
hostname = utils.get_unit_hostname()
path = '/var/lib/ceph/mon/ceph-{}'.format(hostname)
done = '{}/done'.format(path)
upstart = '{}/upstart'.format(path)
secret = utils.config_get('monitor-secret')
keyring = '/var/lib/ceph/tmp/{}.mon.keyring'.format(hostname)
if os.path.exists(done):
utils.juju_log('INFO',
'bootstrap_monitor_cluster: mon already initialized.')
else:
# Ceph >= 0.61.3 needs this for ceph-mon fs creation
os.makedirs('/var/run/ceph', mode=0755)
os.makedirs(path)
# end changes for Ceph >= 0.61.3
try:
subprocess.check_call(['ceph-authtool', keyring,
'--create-keyring', '--name=mon.',
'--add-key={}'.format(secret),
'--cap', 'mon', 'allow *'])
subprocess.check_call(['ceph-mon', '--mkfs',
'-i', hostname,
'--keyring', keyring])
with open(done, 'w'):
pass
with open(upstart, 'w'):
pass
subprocess.check_call(['start', 'ceph-mon-all-starter'])
except:
raise
finally:
os.unlink(keyring)
def reformat_osd():
if utils.config_get('osd-reformat'):
if config('osd-reformat'):
return True
else:
return False
def osdize(dev):
if not os.path.exists(dev):
utils.juju_log('INFO',
'Path {} does not exist - bailing'.format(dev))
return
if (ceph.is_osd_disk(dev) and not
reformat_osd()):
utils.juju_log('INFO',
'Looks like {} is already an OSD, skipping.'
.format(dev))
return
if device_mounted(dev):
utils.juju_log('INFO',
'Looks like {} is in use, skipping.'.format(dev))
return
cmd = ['ceph-disk-prepare']
# Later versions of ceph support more options
if ceph.get_ceph_version() >= "0.48.3":
osd_format = utils.config_get('osd-format')
if osd_format:
cmd.append('--fs-type')
cmd.append(osd_format)
cmd.append(dev)
osd_journal = utils.config_get('osd-journal')
if (osd_journal and
os.path.exists(osd_journal)):
cmd.append(osd_journal)
else:
# Just provide the device - no other options
# for older versions of ceph
cmd.append(dev)
subprocess.call(cmd)
def device_mounted(dev):
return subprocess.call(['grep', '-wqs', dev + '1', '/proc/mounts']) == 0
def filesystem_mounted(fs):
return subprocess.call(['grep', '-wqs', fs, '/proc/mounts']) == 0
@hooks.hook('mon-relation-departed',
'mon-relation-joined')
def mon_relation():
utils.juju_log('INFO', 'Begin mon-relation hook.')
log('Begin mon-relation hook.')
emit_cephconf()
moncount = int(utils.config_get('monitor-count'))
moncount = int(config('monitor-count'))
if len(get_mon_hosts()) >= moncount:
bootstrap_monitor_cluster()
ceph.bootstrap_monitor_cluster(config('monitor-secret'))
ceph.wait_for_bootstrap()
ceph.rescan_osd_devices()
notify_osds()
notify_radosgws()
notify_client()
else:
utils.juju_log('INFO',
'Not enough mons ({}), punting.'.format(
len(get_mon_hosts())))
log('Not enough mons ({}), punting.'
.format(len(get_mon_hosts())))
utils.juju_log('INFO', 'End mon-relation hook.')
log('End mon-relation hook.')
def notify_osds():
utils.juju_log('INFO', 'Begin notify_osds.')
log('Begin notify_osds.')
for relid in utils.relation_ids('osd'):
utils.relation_set(fsid=utils.config_get('fsid'),
osd_bootstrap_key=ceph.get_osd_bootstrap_key(),
auth=utils.config_get('auth-supported'),
rid=relid)
for relid in relation_ids('osd'):
relation_set(relation_id=relid,
fsid=config('fsid'),
osd_bootstrap_key=ceph.get_osd_bootstrap_key(),
auth=config('auth-supported'))
utils.juju_log('INFO', 'End notify_osds.')
log('End notify_osds.')
def notify_radosgws():
utils.juju_log('INFO', 'Begin notify_radosgws.')
log('Begin notify_radosgws.')
for relid in utils.relation_ids('radosgw'):
utils.relation_set(radosgw_key=ceph.get_radosgw_key(),
auth=utils.config_get('auth-supported'),
rid=relid)
for relid in relation_ids('radosgw'):
relation_set(relation_id=relid,
radosgw_key=ceph.get_radosgw_key(),
auth=config('auth-supported'))
utils.juju_log('INFO', 'End notify_radosgws.')
log('End notify_radosgws.')
def notify_client():
utils.juju_log('INFO', 'Begin notify_client.')
log('Begin notify_client.')
for relid in utils.relation_ids('client'):
units = utils.relation_list(relid)
for relid in relation_ids('client'):
units = related_units(relid)
if len(units) > 0:
service_name = units[0].split('/')[0]
utils.relation_set(key=ceph.get_named_key(service_name),
auth=utils.config_get('auth-supported'),
rid=relid)
relation_set(relation_id=relid,
key=ceph.get_named_key(service_name),
auth=config('auth-supported'))
utils.juju_log('INFO', 'End notify_client.')
log('End notify_client.')
@hooks.hook('osd-relation-joined')
def osd_relation():
utils.juju_log('INFO', 'Begin osd-relation hook.')
log('Begin osd-relation hook.')
if ceph.is_quorum():
utils.juju_log('INFO',
'mon cluster in quorum - providing fsid & keys')
utils.relation_set(fsid=utils.config_get('fsid'),
osd_bootstrap_key=ceph.get_osd_bootstrap_key(),
auth=utils.config_get('auth-supported'))
log('mon cluster in quorum - providing fsid & keys')
relation_set(fsid=config('fsid'),
osd_bootstrap_key=ceph.get_osd_bootstrap_key(),
auth=config('auth-supported'))
else:
utils.juju_log('INFO',
'mon cluster not in quorum - deferring fsid provision')
log('mon cluster not in quorum - deferring fsid provision')
utils.juju_log('INFO', 'End osd-relation hook.')
log('End osd-relation hook.')
@hooks.hook('radosgw-relation-joined')
def radosgw_relation():
utils.juju_log('INFO', 'Begin radosgw-relation hook.')
utils.install('radosgw') # Install radosgw for admin tools
log('Begin radosgw-relation hook.')
# Install radosgw for admin tools
apt_install(packages=filter_installed_packages(['radosgw']))
if ceph.is_quorum():
utils.juju_log('INFO',
'mon cluster in quorum - \
providing radosgw with keys')
utils.relation_set(radosgw_key=ceph.get_radosgw_key(),
auth=utils.config_get('auth-supported'))
log('mon cluster in quorum - providing radosgw with keys')
relation_set(radosgw_key=ceph.get_radosgw_key(),
auth=config('auth-supported'))
else:
utils.juju_log('INFO',
'mon cluster not in quorum - deferring key provision')
log('mon cluster not in quorum - deferring key provision')
utils.juju_log('INFO', 'End radosgw-relation hook.')
log('End radosgw-relation hook.')
@hooks.hook('client-relation-joined')
def client_relation():
utils.juju_log('INFO', 'Begin client-relation hook.')
log('Begin client-relation hook.')
if ceph.is_quorum():
utils.juju_log('INFO',
'mon cluster in quorum - \
providing client with keys')
service_name = os.environ['JUJU_REMOTE_UNIT'].split('/')[0]
utils.relation_set(key=ceph.get_named_key(service_name),
auth=utils.config_get('auth-supported'))
log('mon cluster in quorum - providing client with keys')
service_name = remote_unit().split('/')[0]
relation_set(key=ceph.get_named_key(service_name),
auth=config('auth-supported'))
else:
utils.juju_log('INFO',
'mon cluster not in quorum - deferring key provision')
log('mon cluster not in quorum - deferring key provision')
utils.juju_log('INFO', 'End client-relation hook.')
log('End client-relation hook.')
@hooks.hook('upgrade-charm')
def upgrade_charm():
utils.juju_log('INFO', 'Begin upgrade-charm hook.')
log('Begin upgrade-charm hook.')
emit_cephconf()
utils.install('xfsprogs')
apt_install(packages=filter_installed_packages(ceph.PACKAGES), fatal=True)
install_upstart_scripts()
update_monfs()
utils.juju_log('INFO', 'End upgrade-charm hook.')
ceph.update_monfs()
log('End upgrade-charm hook.')
@hooks.hook('start')
def start():
# In case we're being redeployed to the same machines, try
# to make sure everything is running as soon as possible.
subprocess.call(['start', 'ceph-mon-all-starter'])
service_restart('ceph-mon-all')
ceph.rescan_osd_devices()
utils.do_hooks({
'config-changed': config_changed,
'install': install,
'mon-relation-departed': mon_relation,
'mon-relation-joined': mon_relation,
'osd-relation-joined': osd_relation,
'radosgw-relation-joined': radosgw_relation,
'client-relation-joined': client_relation,
'start': start,
'upgrade-charm': upgrade_charm,
})
sys.exit(0)
if __name__ == '__main__':
try:
hooks.execute(sys.argv)
except UnregisteredHookError as e:
log('Unknown hook {} - skipping.'.format(e))

180
hooks/utils.py
View File

@ -7,97 +7,41 @@
# Paul Collins <paul.collins@canonical.com>
#
import os
import subprocess
import socket
import sys
import re
def do_hooks(hooks):
hook = os.path.basename(sys.argv[0])
try:
hook_func = hooks[hook]
except KeyError:
juju_log('INFO',
"This charm doesn't know how to handle '{}'.".format(hook))
else:
hook_func()
def install(*pkgs):
cmd = [
'apt-get',
'-y',
'install'
]
for pkg in pkgs:
cmd.append(pkg)
subprocess.check_call(cmd)
from charmhelpers.core.hookenv import (
unit_get,
cached
)
from charmhelpers.core.host import (
apt_install,
filter_installed_packages
)
TEMPLATES_DIR = 'templates'
try:
import jinja2
except ImportError:
install('python-jinja2')
apt_install(filter_installed_packages(['python-jinja2']),
fatal=True)
import jinja2
try:
import dns.resolver
except ImportError:
install('python-dnspython')
apt_install(filter_installed_packages(['python-dnspython']),
fatal=True)
import dns.resolver
def render_template(template_name, context, template_dir=TEMPLATES_DIR):
templates = jinja2.Environment(
loader=jinja2.FileSystemLoader(template_dir)
)
loader=jinja2.FileSystemLoader(template_dir))
template = templates.get_template(template_name)
return template.render(context)
CLOUD_ARCHIVE = \
""" # Ubuntu Cloud Archive
deb http://ubuntu-cloud.archive.canonical.com/ubuntu {} main
"""
def configure_source():
source = str(config_get('source'))
if not source:
return
if source.startswith('ppa:'):
cmd = [
'add-apt-repository',
source
]
subprocess.check_call(cmd)
if source.startswith('cloud:'):
install('ubuntu-cloud-keyring')
pocket = source.split(':')[1]
with open('/etc/apt/sources.list.d/cloud-archive.list', 'w') as apt:
apt.write(CLOUD_ARCHIVE.format(pocket))
if source.startswith('http:'):
with open('/etc/apt/sources.list.d/ceph.list', 'w') as apt:
apt.write("deb " + source + "\n")
key = config_get('key')
if key:
cmd = [
'apt-key',
'adv', '--keyserver keyserver.ubuntu.com',
'--recv-keys', key
]
subprocess.check_call(cmd)
cmd = [
'apt-get',
'update'
]
subprocess.check_call(cmd)
def enable_pocket(pocket):
apt_sources = "/etc/apt/sources.list"
with open(apt_sources, "r") as sources:
@ -109,105 +53,15 @@ def enable_pocket(pocket):
else:
sources.write(line)
# Protocols
TCP = 'TCP'
UDP = 'UDP'
def expose(port, protocol='TCP'):
cmd = [
'open-port',
'{}/{}'.format(port, protocol)
]
subprocess.check_call(cmd)
def juju_log(severity, message):
cmd = [
'juju-log',
'--log-level', severity,
message
]
subprocess.check_call(cmd)
def relation_ids(relation):
cmd = [
'relation-ids',
relation
]
return subprocess.check_output(cmd).split() # IGNORE:E1103
def relation_list(rid):
cmd = [
'relation-list',
'-r', rid,
]
return subprocess.check_output(cmd).split() # IGNORE:E1103
def relation_get(attribute, unit=None, rid=None):
cmd = [
'relation-get',
]
if rid:
cmd.append('-r')
cmd.append(rid)
cmd.append(attribute)
if unit:
cmd.append(unit)
value = str(subprocess.check_output(cmd)).strip()
if value == "":
return None
else:
return value
def relation_set(**kwargs):
cmd = [
'relation-set'
]
args = []
for k, v in kwargs.items():
if k == 'rid':
cmd.append('-r')
cmd.append(v)
else:
args.append('{}={}'.format(k, v))
cmd += args
subprocess.check_call(cmd)
def unit_get(attribute):
cmd = [
'unit-get',
attribute
]
value = str(subprocess.check_output(cmd)).strip()
if value == "":
return None
else:
return value
def config_get(attribute):
cmd = [
'config-get',
attribute
]
value = str(subprocess.check_output(cmd)).strip()
if value == "":
return None
else:
return value
@cached
def get_unit_hostname():
return socket.gethostname()
def get_host_ip(hostname=unit_get('private-address')):
@cached
def get_host_ip(hostname=None):
hostname = hostname or unit_get('private-address')
try:
# Test to see if already an IPv4 address
socket.inet_aton(hostname)

3
metadata.yaml
View File

@ -1,7 +1,6 @@
name: ceph
summary: Highly scalable distributed storage
maintainer: James Page <james.page@ubuntu.com>,
Paul Collins <paul.collins@canonical.com>
maintainer: James Page <james.page@ubuntu.com>
description: |
Ceph is a distributed storage and network file system designed to provide
excellent performance, reliability, and scalability.