charm-nova-compute/hooks/nova_compute_hooks.py

370 lines
11 KiB
Python
Executable File

#!/usr/bin/python
import sys
from charmhelpers.core.hookenv import (
Hooks,
config,
is_relation_made,
log,
INFO,
ERROR,
relation_ids,
relation_get,
relation_set,
service_name,
unit_get,
UnregisteredHookError,
)
from charmhelpers.core.host import (
restart_on_change,
service_restart,
)
from charmhelpers.fetch import (
apt_install,
apt_purge,
apt_update,
filter_installed_packages,
)
from charmhelpers.contrib.openstack.utils import (
configure_installation_source,
openstack_upgrade_available,
os_requires_version,
)
from charmhelpers.contrib.storage.linux.ceph import (
ensure_ceph_keyring,
CephBrokerRq,
CephBrokerRsp,
delete_keyring,
)
from charmhelpers.payload.execd import execd_preinstall
from nova_compute_utils import (
create_libvirt_secret,
determine_packages,
import_authorized_keys,
import_keystone_ca_cert,
initialize_ssh_keys,
migration_enabled,
network_manager,
do_openstack_upgrade,
public_ssh_key,
restart_map,
services,
register_configs,
NOVA_CONF,
QUANTUM_CONF, NEUTRON_CONF,
ceph_config_file, CEPH_SECRET,
enable_shell, disable_shell,
fix_path_ownership,
get_topics,
assert_charm_supports_ipv6,
manage_ovs,
)
from charmhelpers.contrib.network.ip import (
get_ipv6_addr
)
from nova_compute_context import (
CEPH_SECRET_UUID,
assert_libvirt_imagebackend_allowed
)
from charmhelpers.contrib.charmsupport import nrpe
from charmhelpers.core.sysctl import create as create_sysctl
from socket import gethostname
hooks = Hooks()
CONFIGS = register_configs()
@hooks.hook()
def install():
execd_preinstall()
configure_installation_source(config('openstack-origin'))
apt_update()
apt_install(determine_packages(), fatal=True)
@hooks.hook('config-changed')
@restart_on_change(restart_map())
def config_changed():
if config('prefer-ipv6'):
assert_charm_supports_ipv6()
global CONFIGS
if openstack_upgrade_available('nova-common'):
CONFIGS = do_openstack_upgrade()
sysctl_dict = config('sysctl')
if sysctl_dict:
create_sysctl(sysctl_dict, '/etc/sysctl.d/50-nova-compute.conf')
if migration_enabled() and config('migration-auth-type') == 'ssh':
# Check-in with nova-c-c and register new ssh key, if it has just been
# generated.
initialize_ssh_keys()
import_authorized_keys()
if config('enable-resize') is True:
enable_shell(user='nova')
initialize_ssh_keys(user='nova')
import_authorized_keys(user='nova', prefix='nova')
else:
disable_shell(user='nova')
if config('instances-path') is not None:
fp = config('instances-path')
fix_path_ownership(fp, user='nova')
[compute_joined(rid) for rid in relation_ids('cloud-compute')]
for rid in relation_ids('zeromq-configuration'):
zeromq_configuration_relation_joined(rid)
update_nrpe_config()
CONFIGS.write_all()
@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'))
@hooks.hook('amqp-relation-changed')
@hooks.hook('amqp-relation-departed')
@restart_on_change(restart_map())
def amqp_changed():
if 'amqp' not in CONFIGS.complete_contexts():
log('amqp relation incomplete. Peer not ready?')
return
CONFIGS.write(NOVA_CONF)
# No need to write NEUTRON_CONF if neutron-plugin is managing it
if manage_ovs():
if network_manager() == 'quantum':
CONFIGS.write(QUANTUM_CONF)
if network_manager() == 'neutron':
CONFIGS.write(NEUTRON_CONF)
@hooks.hook('shared-db-relation-joined')
def db_joined(rid=None):
if is_relation_made('pgsql-db'):
# error, postgresql is used
e = ('Attempting to associate a mysql database when there is already '
'associated a postgresql one')
log(e, level=ERROR)
raise Exception(e)
relation_set(relation_id=rid,
nova_database=config('database'),
nova_username=config('database-user'),
nova_hostname=unit_get('private-address'))
@hooks.hook('pgsql-db-relation-joined')
def pgsql_db_joined():
if is_relation_made('shared-db'):
# raise error
e = ('Attempting to associate a postgresql database when'
' there is already associated a mysql one')
log(e, level=ERROR)
raise Exception(e)
relation_set(database=config('database'))
@hooks.hook('shared-db-relation-changed')
@restart_on_change(restart_map())
def db_changed():
if 'shared-db' not in CONFIGS.complete_contexts():
log('shared-db relation incomplete. Peer not ready?')
return
CONFIGS.write(NOVA_CONF)
@hooks.hook('pgsql-db-relation-changed')
@restart_on_change(restart_map())
def postgresql_db_changed():
if 'pgsql-db' not in CONFIGS.complete_contexts():
log('pgsql-db relation incomplete. Peer not ready?')
return
CONFIGS.write(NOVA_CONF)
@hooks.hook('image-service-relation-changed')
@restart_on_change(restart_map())
def image_service_changed():
if 'image-service' not in CONFIGS.complete_contexts():
log('image-service relation incomplete. Peer not ready?')
return
CONFIGS.write(NOVA_CONF)
@hooks.hook('cloud-compute-relation-joined')
def compute_joined(rid=None):
# NOTE(james-page) in MAAS environments the actual hostname is a CNAME
# record so won't get scanned based on private-address which is an IP
# add the hostname configured locally to the relation.
settings = {
'hostname': gethostname()
}
if config('prefer-ipv6'):
settings = {'private-address': get_ipv6_addr()[0]}
if migration_enabled():
auth_type = config('migration-auth-type')
settings['migration_auth_type'] = auth_type
if auth_type == 'ssh':
settings['ssh_public_key'] = public_ssh_key()
relation_set(relation_id=rid, **settings)
if config('enable-resize'):
settings['nova_ssh_public_key'] = public_ssh_key(user='nova')
relation_set(relation_id=rid, **settings)
@hooks.hook('cloud-compute-relation-changed')
@restart_on_change(restart_map())
def compute_changed():
# rewriting all configs to pick up possible net or vol manager
# config advertised from controller.
CONFIGS.write_all()
import_authorized_keys()
import_authorized_keys(user='nova', prefix='nova')
import_keystone_ca_cert()
@hooks.hook('ceph-relation-joined')
@restart_on_change(restart_map())
def ceph_joined():
apt_install(filter_installed_packages(['ceph-common']), fatal=True)
# Bug 1427660
service_restart('libvirt-bin')
@hooks.hook('ceph-relation-changed')
@restart_on_change(restart_map())
def ceph_changed():
if 'ceph' not in CONFIGS.complete_contexts():
log('ceph relation incomplete. Peer not ready?')
return
if not ensure_ceph_keyring(service=service_name(), user='nova',
group='nova'):
log('Could not create ceph keyring: peer not ready?')
return
CONFIGS.write(ceph_config_file())
CONFIGS.write(CEPH_SECRET)
CONFIGS.write(NOVA_CONF)
# With some refactoring, this can move into NovaComputeCephContext
# and allow easily extended to support other compute flavors.
if config('virt-type') in ['kvm', 'qemu', 'lxc']:
create_libvirt_secret(secret_file=CEPH_SECRET,
secret_uuid=CEPH_SECRET_UUID,
key=relation_get('key'))
if (config('libvirt-image-backend') == 'rbd' and
assert_libvirt_imagebackend_allowed()):
settings = relation_get()
if settings and 'broker_rsp' in settings:
rsp = CephBrokerRsp(settings['broker_rsp'])
# Non-zero return code implies failure
if rsp.exit_code:
log("Ceph broker request failed (rc=%s, msg=%s)" %
(rsp.exit_code, rsp.exit_msg), level=ERROR)
return
log("Ceph broker request succeeded (rc=%s, msg=%s)" %
(rsp.exit_code, rsp.exit_msg), level=INFO)
else:
rq = CephBrokerRq()
replicas = config('ceph-osd-replication-count')
rq.add_op_create_pool(name=config('rbd-pool'),
replica_count=replicas)
for rid in relation_ids('ceph'):
relation_set(broker_req=rq.request)
log("Request(s) sent to Ceph broker (rid=%s)" % (rid))
@hooks.hook('ceph-relation-broken')
def ceph_broken():
service = service_name()
delete_keyring(service=service)
CONFIGS.write_all()
@hooks.hook('amqp-relation-broken',
'image-service-relation-broken',
'shared-db-relation-broken',
'pgsql-db-relation-broken')
@restart_on_change(restart_map())
def relation_broken():
CONFIGS.write_all()
@hooks.hook('upgrade-charm')
def upgrade_charm():
for r_id in relation_ids('amqp'):
amqp_joined(relation_id=r_id)
update_nrpe_config()
@hooks.hook('nova-ceilometer-relation-changed')
@restart_on_change(restart_map())
def nova_ceilometer_relation_changed():
CONFIGS.write_all()
@hooks.hook('zeromq-configuration-relation-joined')
@os_requires_version('kilo', 'nova-common')
def zeromq_configuration_relation_joined(relid=None):
relation_set(relation_id=relid,
topics=" ".join(get_topics()),
users="nova")
@hooks.hook('zeromq-configuration-relation-changed')
@restart_on_change(restart_map())
def zeromq_configuration_relation_changed():
CONFIGS.write(NOVA_CONF)
@hooks.hook('nrpe-external-master-relation-joined',
'nrpe-external-master-relation-changed')
def update_nrpe_config():
# python-dbus is used by check_upstart_job
apt_install('python-dbus')
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)
nrpe_setup.write()
@hooks.hook('neutron-plugin-relation-changed')
@restart_on_change(restart_map())
def neutron_plugin_changed():
settings = relation_get()
if 'metadata-shared-secret' in settings:
apt_update()
apt_install('nova-api-metadata', fatal=True)
else:
apt_purge('nova-api-metadata', fatal=True)
CONFIGS.write(NOVA_CONF)
def main():
try:
hooks.execute(sys.argv)
except UnregisteredHookError as e:
log('Unknown hook {} - skipping.'.format(e))
if __name__ == '__main__':
main()