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#!/usr/bin/python
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from base64 import b64decode
from charmhelpers.core.hookenv import (
log, ERROR, WARNING,
config,
relation_get,
relation_set,
relation_ids,
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Hooks,
UnregisteredHookError,
status_set,
)
from charmhelpers.core.host import service_restart
from charmhelpers.core.unitdata import kv
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from charmhelpers.fetch import (
apt_update,
apt_install,
filter_installed_packages,
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apt_purge,
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)
from charmhelpers.core.host import (
lsb_release,
)
from charmhelpers.contrib.hahelpers.cluster import(
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get_hacluster_config,
eligible_leader
)
from charmhelpers.contrib.hahelpers.apache import(
install_ca_cert
)
from charmhelpers.contrib.openstack.utils import (
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config_value_changed,
configure_installation_source,
openstack_upgrade_available,
os_requires_version,
pausable_restart_on_change as restart_on_change,
is_unit_paused_set,
)
from charmhelpers.payload.execd import execd_preinstall
from charmhelpers.core.sysctl import create as create_sysctl
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from charmhelpers.contrib.charmsupport import nrpe
from charmhelpers.contrib.hardening.harden import harden
import sys
from neutron_utils import (
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L3HA_PACKAGES,
register_configs,
restart_map,
services,
do_openstack_upgrade,
get_packages,
get_early_packages,
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get_topics,
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git_install,
git_install_requested,
valid_plugin,
configure_ovs,
stop_services,
cache_env_data,
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update_legacy_ha_files,
remove_legacy_ha_files,
install_legacy_ha_files,
cleanup_ovs_netns,
reassign_agent_resources,
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stop_neutron_ha_monitor_daemon,
use_l3ha,
NEUTRON_COMMON,
assess_status,
install_systemd_override,
configure_apparmor,
)
hooks = Hooks()
CONFIGS = register_configs()
@hooks.hook('install.real')
@harden()
def install():
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status_set('maintenance', 'Executing pre-install')
execd_preinstall()
src = config('openstack-origin')
if (lsb_release()['DISTRIB_CODENAME'] == 'precise' and
src == 'distro'):
src = 'cloud:precise-icehouse'
configure_installation_source(src)
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status_set('maintenance', 'Installing apt packages')
apt_update(fatal=True)
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apt_install('python-six', fatal=True) # Force upgrade
if valid_plugin():
apt_install(filter_installed_packages(get_early_packages()),
fatal=True)
apt_install(filter_installed_packages(get_packages()),
fatal=True)
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status_set('maintenance', 'Git install')
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git_install(config('openstack-origin-git'))
else:
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message = 'Please provide a valid plugin config'
log(message, level=ERROR)
status_set('blocked', message)
sys.exit(1)
# Legacy HA for Icehouse
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update_legacy_ha_files()
# Install systemd overrides to remove service startup race between
# n-gateway and n-cloud-controller services.
install_systemd_override()
@hooks.hook('config-changed')
@restart_on_change(restart_map())
@harden()
def config_changed():
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global CONFIGS
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if git_install_requested():
if config_value_changed('openstack-origin-git'):
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status_set('maintenance', 'Running Git install')
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git_install(config('openstack-origin-git'))
CONFIGS.write_all()
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elif not config('action-managed-upgrade'):
if openstack_upgrade_available(NEUTRON_COMMON):
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status_set('maintenance', 'Running openstack upgrade')
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do_openstack_upgrade(CONFIGS)
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update_nrpe_config()
sysctl_dict = config('sysctl')
if sysctl_dict:
create_sysctl(sysctl_dict, '/etc/sysctl.d/50-quantum-gateway.conf')
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# Re-run joined hooks as config might have changed
for r_id in relation_ids('amqp'):
amqp_joined(relation_id=r_id)
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for r_id in relation_ids('amqp-nova'):
amqp_nova_joined(relation_id=r_id)
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for rid in relation_ids('zeromq-configuration'):
zeromq_configuration_relation_joined(rid)
if valid_plugin():
CONFIGS.write_all()
configure_ovs()
configure_apparmor()
else:
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message = 'Please provide a valid plugin config'
log(message, level=ERROR)
status_set('blocked', message)
sys.exit(1)
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if config('plugin') == 'n1kv':
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if not git_install_requested():
if config('enable-l3-agent'):
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status_set('maintenance', 'Installing apt packages')
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apt_install(filter_installed_packages('neutron-l3-agent'))
else:
apt_purge('neutron-l3-agent')
# Setup legacy ha configurations
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update_legacy_ha_files()
@hooks.hook('upgrade-charm')
@harden()
def upgrade_charm():
install()
config_changed()
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update_legacy_ha_files(force=True)
# Install systemd overrides to remove service startup race between
# n-gateway and n-cloud-controller services.
install_systemd_override()
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@hooks.hook('amqp-nova-relation-joined')
def amqp_nova_joined(relation_id=None):
relation_set(relation_id=relation_id,
username=config('nova-rabbit-user'),
vhost=config('nova-rabbit-vhost'))
@hooks.hook('amqp-relation-joined')
def amqp_joined(relation_id=None):
relation_set(relation_id=relation_id,
username=config('rabbit-user'),
vhost=config('rabbit-vhost'))
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@hooks.hook('amqp-nova-relation-departed')
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@hooks.hook('amqp-nova-relation-changed')
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@restart_on_change(restart_map())
def amqp_nova_changed():
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if 'amqp-nova' not in CONFIGS.complete_contexts():
log('amqp relation incomplete. Peer not ready?')
return
CONFIGS.write_all()
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@hooks.hook('amqp-relation-departed')
@restart_on_change(restart_map())
def amqp_departed():
if 'amqp' not in CONFIGS.complete_contexts():
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log('amqp relation incomplete. Peer not ready?')
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return
CONFIGS.write_all()
@hooks.hook('amqp-relation-changed',
'cluster-relation-changed',
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'cluster-relation-joined')
@restart_on_change(restart_map())
def amqp_changed():
CONFIGS.write_all()
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@hooks.hook('neutron-plugin-api-relation-changed')
@restart_on_change(restart_map())
def neutron_plugin_api_changed():
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if use_l3ha():
apt_update()
apt_install(L3HA_PACKAGES, fatal=True)
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CONFIGS.write_all()
@hooks.hook('quantum-network-service-relation-changed')
@restart_on_change(restart_map())
def nm_changed():
CONFIGS.write_all()
if relation_get('ca_cert'):
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ca_crt = b64decode(relation_get('ca_cert'))
install_ca_cert(ca_crt)
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if config('ha-legacy-mode'):
cache_env_data()
# NOTE: nova-api-metadata needs to be restarted
# once the nova-conductor is up and running
# on the nova-cc units.
restart_nonce = relation_get('restart_trigger')
if restart_nonce is not None:
db = kv()
previous_nonce = db.get('restart_nonce')
if previous_nonce != restart_nonce:
if not is_unit_paused_set():
service_restart('nova-api-metadata')
db.set('restart_nonce', restart_nonce)
db.flush()
@hooks.hook("cluster-relation-departed")
@restart_on_change(restart_map())
def cluster_departed():
if config('plugin') in ['nvp', 'nsx']:
log('Unable to re-assign agent resources for'
' failed nodes with nvp|nsx',
level=WARNING)
return
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if config('plugin') == 'n1kv':
log('Unable to re-assign agent resources for failed nodes with n1kv',
level=WARNING)
return
if not config('ha-legacy-mode') and eligible_leader(None):
reassign_agent_resources()
CONFIGS.write_all()
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@hooks.hook('cluster-relation-broken')
@hooks.hook('stop')
def stop():
stop_services()
if config('ha-legacy-mode'):
# Cleanup ovs and netns for destroyed units.
cleanup_ovs_netns()
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@hooks.hook('zeromq-configuration-relation-joined')
@os_requires_version('kilo', NEUTRON_COMMON)
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def zeromq_configuration_relation_joined(relid=None):
relation_set(relation_id=relid,
topics=" ".join(get_topics()),
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users="neutron nova")
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@hooks.hook('zeromq-configuration-relation-changed')
@restart_on_change(restart_map(), stopstart=True)
def zeromq_configuration_relation_changed():
CONFIGS.write_all()
@hooks.hook('nrpe-external-master-relation-joined',
'nrpe-external-master-relation-changed')
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def update_nrpe_config():
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# python-dbus is used by check_upstart_job
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apt_install('python-dbus')
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hostname = nrpe.get_nagios_hostname()
current_unit = nrpe.get_nagios_unit_name()
nrpe_setup = nrpe.NRPE(hostname=hostname)
nrpe.add_init_service_checks(nrpe_setup, services(), current_unit)
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cronpath = '/etc/cron.d/nagios-netns-check'
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cron_template = ('*/5 * * * * root '
'/usr/local/lib/nagios/plugins/check_netns.sh '
'> /var/lib/nagios/netns-check.txt\n'
)
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f = open(cronpath, 'w')
f.write(cron_template)
f.close()
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nrpe_setup.add_check(
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shortname="netns",
description='Network Namespace check {%s}' % current_unit,
check_cmd='check_status_file.py -f /var/lib/nagios/netns-check.txt'
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)
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nrpe_setup.write()
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@hooks.hook('ha-relation-joined')
@hooks.hook('ha-relation-changed')
def ha_relation_joined():
if config('ha-legacy-mode'):
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log('ha-relation-changed update_legacy_ha_files')
install_legacy_ha_files()
cache_env_data()
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cluster_config = get_hacluster_config(exclude_keys=['vip'])
resources = {
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'res_monitor': 'ocf:canonical:NeutronAgentMon',
}
resource_params = {
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'res_monitor': 'op monitor interval="60s"',
}
clones = {
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'cl_monitor': 'res_monitor meta interleave="true"',
}
relation_set(corosync_bindiface=cluster_config['ha-bindiface'],
corosync_mcastport=cluster_config['ha-mcastport'],
resources=resources,
resource_params=resource_params,
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clones=clones)
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@hooks.hook('ha-relation-departed')
def ha_relation_destroyed():
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# If e.g. we want to upgrade to Juno and use native Neutron HA support then
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# we need to un-corosync-cluster to enable the transition.
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if config('ha-legacy-mode'):
stop_neutron_ha_monitor_daemon()
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remove_legacy_ha_files()
@hooks.hook('update-status')
@harden()
def update_status():
log('Updating status.')
if __name__ == '__main__':
try:
hooks.execute(sys.argv)
except UnregisteredHookError as e:
log('Unknown hook {} - skipping.'.format(e))
assess_status(CONFIGS)