def check_cluster(zkpeer):
'''
Checkup on the state of the cluster. Start a rolling restart if
the peers have changed.
'''
zk = Zookeeper()
if data_changed('zkpeer.nodes', zk.read_peers()):
peers = _ip_list(zk.sort_peers(zkpeer))
nonce = time.time()
hookenv.log('Quorum changed. Restart queue: {}'.format(peers))
leader_set(restart_queue=json.dumps(peers),
restart_nonce=json.dumps(nonce))
def check_cluster(zkpeer):
'''
Checkup on the state of the cluster. Start a rolling restart if
the peers have changed.
'''
zk = Zookeeper()
if data_changed('zkpeer.nodes', zk.read_peers()):
peers = _ip_list(zk.sort_peers(zkpeer))
nonce = time.time()
hookenv.log('Quorum changed. Restart queue: {}'.format(peers))
leader_set(
restart_queue=json.dumps(peers),
restart_nonce=json.dumps(nonce)
)
def install_zookeeper():
'''
After Bigtop has done the initial setup, trigger a puppet install,
via our Zooekeeper library.
puppet will start the service, as a side effect.
'''
hookenv.status_set('maintenance', 'installing zookeeper')
zookeeper = Zookeeper()
# Prime data changed
data_changed('zkpeer.nodes', zookeeper.read_peers())
data_changed('zk.network_interface',
hookenv.config().get('network_interface'))
zookeeper.install()
zookeeper.open_ports()
set_state('zookeeper.installed')
set_state('zookeeper.started')
hookenv.status_set('active', 'ready {}'.format(zookeeper.quorum_check()))
def install_zookeeper():
'''
After Bigtop has done the initial setup, trigger a puppet install,
via our Zooekeeper library.
puppet will start the service, as a side effect.
'''
hookenv.status_set('maintenance', 'installing zookeeper')
zookeeper = Zookeeper()
# Prime data changed
data_changed('zkpeer.nodes', zookeeper.read_peers())
data_changed(
'zk.network_interface',
hookenv.config().get('network_interface'))
zookeeper.install()
zookeeper.open_ports()
set_state('zookeeper.installed')
set_state('zookeeper.started')
hookenv.status_set('active', 'ready {}'.format(zookeeper.quorum_check()))
def configure():
cfg = hookenv.config()
zookeeper = Zookeeper()
changed = any((
data_changed('zkpeer.nodes', zookeeper.read_peers()),
data_changed('zk.autopurge_purge_interval',
cfg.get('autopurge_purge_interval')),
data_changed('zk.autopurge_snap_retain_count',
cfg.get('autopurge_snap_retain_count')),
data_changed('zk.storage.data_dir',
unitdata.kv().get('zookeeper.storage.data_dir')),
))
if changed or is_flag_set('zookeeper.force-reconfigure'):
zookeeper.install()
zookeeper.open_ports()
clear_flag('zookeeper.force-reconfigure')
set_flag('zookeeper.started')
set_flag('zookeeper.configured')
hookenv.status_set('active', 'ready {}'.format(zookeeper.quorum_check()))
# set app version string for juju status output
zoo_version = get_installed_version(SNAP_NAME) or 'unknown'
hookenv.application_version_set(zoo_version)
