def restart_zookeeper_if_config_changed():
"""Restart Zookeeper if zoo.cfg has changed.
As peers come and go, zoo.cfg will be updated. When that file changes,
restart the Zookeeper service and set an appropriate status message.
"""
# Possibly update bind address
network_interface = hookenv.config().get('network_interface')
if data_changed("zookeeper.bind_address", network_interface):
zk = Zookeeper()
zk.update_bind_address()
zoo_cfg = DistConfig().path('zookeeper_conf') / 'zoo.cfg'
if any_file_changed([zoo_cfg]):
hookenv.status_set('maintenance',
'Server config changed: restarting Zookeeper')
zk = Zookeeper()
zk.stop()
zk.start()
zk_count = int(zk.get_zk_count())
extra_status = ""
if zk_count < 3:
extra_status = ": less than 3 is suboptimal"
elif (zk_count % 2 == 0):
extra_status = ": even number is suboptimal"
hookenv.status_set('active',
'Ready (%d zk units%s)' % (zk_count, extra_status))
else:
# Make sure zookeeper is running in any case
zk = Zookeeper()
zk.start()
zk.open_ports()
def restart_zookeeper_if_config_changed():
"""Restart Zookeeper if zoo.cfg has changed.
As peers come and go, zoo.cfg will be updated. When that file changes,
restart the Zookeeper service and set an appropriate status message.
"""
# Possibly update bind address
network_interface = hookenv.config().get('network_interface')
if data_changed("zookeeper.bind_address", network_interface):
zk = Zookeeper()
zk.update_bind_address()
zoo_cfg = DistConfig().path('zookeeper_conf') / 'zoo.cfg'
if any_file_changed([zoo_cfg]):
hookenv.status_set('maintenance', 'Server config changed: restarting Zookeeper')
zk = Zookeeper()
zk.stop()
zk.start()
zk_count = int(zk.get_zk_count())
extra_status = ""
if zk_count < 3:
extra_status = ": less than 3 is suboptimal"
elif (zk_count % 2 == 0):
extra_status = ": even number is suboptimal"
hookenv.status_set('active', 'Ready (%d zk units%s)' % (zk_count, extra_status))
def restart_zookeeper():
hookenv.status_set('maintenance', 'Server config changed: restarting Zookeeper')
zk = Zookeeper()
zk.stop()
zk.start()
hookenv.status_set('active', 'Ready')
def start_zookeeper():
zk = Zookeeper()
zk.start()
zk.open_ports()
set_state('zookeeper.started')
hookenv.status_set('active', 'Ready')
def start_zookeeper():
zk = Zookeeper()
zk.start()
zk.open_ports()
set_state('zookeeper.started')
hookenv.status_set('active', 'Ready')