a92cfd6a8a
The allowed_units key needs to be set by all units rather than just the leader incase the leader dies and the setting is lost. Change-Id: I0ed687e5615ee1de5ea34c9169e2728fe557886b Closes-Bug: #1712383
781 lines
27 KiB
Python
Executable File
781 lines
27 KiB
Python
Executable File
#!/usr/bin/python
|
|
# TODO: Support changes to root and sstuser passwords
|
|
import sys
|
|
import json
|
|
import os
|
|
import socket
|
|
import time
|
|
|
|
from charmhelpers.core.hookenv import (
|
|
Hooks, UnregisteredHookError,
|
|
is_relation_made,
|
|
log,
|
|
relation_get,
|
|
relation_set,
|
|
relation_id,
|
|
relation_ids,
|
|
related_units,
|
|
unit_get,
|
|
config,
|
|
remote_unit,
|
|
relation_type,
|
|
DEBUG,
|
|
INFO,
|
|
WARNING,
|
|
is_leader,
|
|
network_get_primary_address,
|
|
charm_name,
|
|
leader_get,
|
|
open_port,
|
|
status_set,
|
|
)
|
|
from charmhelpers.core.host import (
|
|
service_restart,
|
|
service_start,
|
|
file_hash,
|
|
lsb_release,
|
|
CompareHostReleases,
|
|
)
|
|
from charmhelpers.core.templating import render
|
|
from charmhelpers.fetch import (
|
|
apt_update,
|
|
apt_install,
|
|
add_source,
|
|
)
|
|
from charmhelpers.contrib.peerstorage import (
|
|
peer_echo,
|
|
peer_store_and_set,
|
|
peer_retrieve_by_prefix,
|
|
)
|
|
from charmhelpers.contrib.database.mysql import (
|
|
PerconaClusterHelper,
|
|
)
|
|
from charmhelpers.contrib.hahelpers.cluster import (
|
|
is_elected_leader,
|
|
is_clustered,
|
|
DC_RESOURCE_NAME,
|
|
get_hacluster_config,
|
|
)
|
|
from charmhelpers.payload.execd import execd_preinstall
|
|
from charmhelpers.contrib.network.ip import (
|
|
get_address_in_network,
|
|
get_iface_for_address,
|
|
get_netmask_for_address,
|
|
get_ipv6_addr,
|
|
is_address_in_network,
|
|
resolve_network_cidr,
|
|
)
|
|
from charmhelpers.contrib.charmsupport import nrpe
|
|
from charmhelpers.contrib.hardening.harden import harden
|
|
from charmhelpers.contrib.hardening.mysql.checks import run_mysql_checks
|
|
from charmhelpers.contrib.openstack.utils import (
|
|
is_unit_paused_set,
|
|
)
|
|
from charmhelpers.contrib.openstack.ha.utils import (
|
|
update_dns_ha_resource_params,
|
|
)
|
|
|
|
from percona_utils import (
|
|
determine_packages,
|
|
setup_percona_repo,
|
|
resolve_hostname_to_ip,
|
|
get_cluster_hosts,
|
|
configure_sstuser,
|
|
configure_mysql_root_password,
|
|
relation_clear,
|
|
assert_charm_supports_ipv6,
|
|
unit_sorted,
|
|
get_db_helper,
|
|
mark_seeded, seeded,
|
|
install_mysql_ocf,
|
|
notify_bootstrapped,
|
|
is_bootstrapped,
|
|
get_wsrep_value,
|
|
assess_status,
|
|
register_configs,
|
|
resolve_cnf_file,
|
|
create_binlogs_directory,
|
|
bootstrap_pxc,
|
|
get_cluster_host_ip,
|
|
client_node_is_ready,
|
|
leader_node_is_ready,
|
|
DEFAULT_MYSQL_PORT,
|
|
sst_password,
|
|
root_password,
|
|
pxc_installed,
|
|
update_bootstrap_uuid,
|
|
LeaderNoBootstrapUUIDError,
|
|
update_root_password,
|
|
)
|
|
|
|
from charmhelpers.core.unitdata import kv
|
|
|
|
hooks = Hooks()
|
|
|
|
RES_MONITOR_PARAMS = ('params user="sstuser" password="%(sstpass)s" '
|
|
'pid="/var/run/mysqld/mysqld.pid" '
|
|
'socket="/var/run/mysqld/mysqld.sock" '
|
|
'max_slave_lag="5" '
|
|
'cluster_type="pxc" '
|
|
'op monitor interval="1s" timeout="30s" '
|
|
'OCF_CHECK_LEVEL="1"')
|
|
|
|
INITIAL_CLIENT_UPDATE_KEY = 'initial_client_update_done'
|
|
|
|
|
|
def install_percona_xtradb_cluster():
|
|
'''Attempt PXC install based on seeding of passwords for users'''
|
|
if pxc_installed():
|
|
log('MySQL already installed, skipping')
|
|
return
|
|
|
|
_root_password = root_password()
|
|
_sst_password = sst_password()
|
|
if not _root_password or not _sst_password:
|
|
log('Passwords not seeded, unable to install MySQL at this'
|
|
' point so deferring installation')
|
|
return
|
|
configure_mysql_root_password(_root_password)
|
|
|
|
apt_install(determine_packages(), fatal=True)
|
|
|
|
configure_sstuser(_sst_password)
|
|
if config('harden') and 'mysql' in config('harden'):
|
|
run_mysql_checks()
|
|
|
|
|
|
@hooks.hook('install.real')
|
|
@harden()
|
|
def install():
|
|
execd_preinstall()
|
|
_release = lsb_release()['DISTRIB_CODENAME'].lower()
|
|
if (config('source') is None and
|
|
CompareHostReleases(_release) < 'trusty'):
|
|
setup_percona_repo()
|
|
elif config('source') is not None:
|
|
add_source(config('source'), config('key'))
|
|
apt_update(fatal=True)
|
|
|
|
install_percona_xtradb_cluster()
|
|
|
|
|
|
def render_config(clustered=False, hosts=None):
|
|
if hosts is None:
|
|
hosts = []
|
|
|
|
config_file = resolve_cnf_file()
|
|
if not os.path.exists(os.path.dirname(config_file)):
|
|
os.makedirs(os.path.dirname(config_file))
|
|
|
|
context = {
|
|
'cluster_name': 'juju_cluster',
|
|
'private_address': get_cluster_host_ip(),
|
|
'clustered': clustered,
|
|
'cluster_hosts': ",".join(hosts),
|
|
'sst_method': config('sst-method'),
|
|
'sst_password': sst_password(),
|
|
'innodb_file_per_table': config('innodb-file-per-table'),
|
|
'table_open_cache': config('table-open-cache'),
|
|
'lp1366997_workaround': config('lp1366997-workaround'),
|
|
'binlogs_path': config('binlogs-path'),
|
|
'enable_binlogs': config('enable-binlogs'),
|
|
'binlogs_max_size': config('binlogs-max-size'),
|
|
'binlogs_expire_days': config('binlogs-expire-days'),
|
|
'performance_schema': config('performance-schema'),
|
|
}
|
|
|
|
if config('prefer-ipv6'):
|
|
# NOTE(hopem): this is a kludge to get percona working with ipv6.
|
|
# See lp 1380747 for more info. This is intended as a stop gap until
|
|
# percona package is fixed to support ipv6.
|
|
context['bind_address'] = '::'
|
|
context['wsrep_provider_options'] = 'gmcast.listen_addr=tcp://:::4567;'
|
|
context['ipv6'] = True
|
|
else:
|
|
context['ipv6'] = False
|
|
|
|
context.update(PerconaClusterHelper().parse_config())
|
|
render(os.path.basename(config_file),
|
|
config_file, context, perms=0o444)
|
|
|
|
|
|
def render_config_restart_on_changed(clustered, hosts, bootstrap=False):
|
|
"""Render mysql config and restart mysql service if file changes as a
|
|
result.
|
|
|
|
If bootstrap is True we do a bootstrap-pxc in order to bootstrap the
|
|
percona cluster. This should only be performed once at cluster creation
|
|
time.
|
|
|
|
If percona is already bootstrapped we can get away with just ensuring that
|
|
it is started so long as the new node to be added is guaranteed to have
|
|
been restarted so as to apply the new config.
|
|
"""
|
|
config_file = resolve_cnf_file()
|
|
pre_hash = file_hash(config_file)
|
|
render_config(clustered, hosts)
|
|
create_binlogs_directory()
|
|
update_db_rels = False
|
|
if file_hash(config_file) != pre_hash or bootstrap:
|
|
if bootstrap:
|
|
bootstrap_pxc()
|
|
# NOTE(dosaboy): this will not actually do anything if no cluster
|
|
# relation id exists yet.
|
|
notify_bootstrapped()
|
|
update_db_rels = True
|
|
else:
|
|
delay = 1
|
|
attempts = 0
|
|
max_retries = 5
|
|
# NOTE(dosaboy): avoid unnecessary restarts. Once mysql is started
|
|
# it needn't be restarted when new units join the cluster since the
|
|
# new units will join and apply their own config.
|
|
if not seeded():
|
|
action = service_restart
|
|
else:
|
|
action = service_start
|
|
|
|
while not action('mysql'):
|
|
if attempts == max_retries:
|
|
raise Exception("Failed to start mysql (max retries "
|
|
"reached)")
|
|
|
|
log("Failed to start mysql - retrying in %ss" % (delay),
|
|
WARNING)
|
|
time.sleep(delay)
|
|
delay += 2
|
|
attempts += 1
|
|
|
|
# If we get here we assume prior actions have succeeded to always
|
|
# this unit is marked as seeded so that subsequent calls don't result
|
|
# in a restart.
|
|
mark_seeded()
|
|
|
|
if update_db_rels:
|
|
update_shared_db_rels()
|
|
else:
|
|
log("Config file '{}' unchanged".format(config_file), level=DEBUG)
|
|
|
|
|
|
def update_shared_db_rels():
|
|
""" Upate client shared-db relations IFF ready
|
|
"""
|
|
if leader_node_is_ready() or client_node_is_ready():
|
|
for r_id in relation_ids('shared-db'):
|
|
for unit in related_units(r_id):
|
|
shared_db_changed(r_id, unit)
|
|
kvstore = kv()
|
|
update_done = kvstore.get(INITIAL_CLIENT_UPDATE_KEY, False)
|
|
if not update_done:
|
|
kvstore.set(key=INITIAL_CLIENT_UPDATE_KEY, value=True)
|
|
kvstore.flush()
|
|
|
|
|
|
@hooks.hook('upgrade-charm')
|
|
@harden()
|
|
def upgrade():
|
|
|
|
if is_leader():
|
|
if is_unit_paused_set():
|
|
log('Unit is paused, skiping upgrade', level=INFO)
|
|
return
|
|
|
|
# broadcast the bootstrap-uuid
|
|
wsrep_ready = get_wsrep_value('wsrep_ready') or ""
|
|
if wsrep_ready.lower() in ['on', 'ready']:
|
|
cluster_state_uuid = get_wsrep_value('wsrep_cluster_state_uuid')
|
|
if cluster_state_uuid:
|
|
mark_seeded()
|
|
notify_bootstrapped(cluster_uuid=cluster_state_uuid)
|
|
else:
|
|
# Ensure all the peers have the bootstrap-uuid attribute set
|
|
# as this is all happening during the upgrade-charm hook is reasonable
|
|
# to expect the cluster is running.
|
|
|
|
# Wait until the leader has set the
|
|
try:
|
|
update_bootstrap_uuid()
|
|
except LeaderNoBootstrapUUIDError:
|
|
status_set('waiting', "Waiting for bootstrap-uuid set by leader")
|
|
|
|
config_changed()
|
|
|
|
|
|
@hooks.hook('config-changed')
|
|
@harden()
|
|
def config_changed():
|
|
# if we are paused, delay doing any config changed hooks. It is forced on
|
|
# the resume.
|
|
if is_unit_paused_set():
|
|
return
|
|
|
|
if config('prefer-ipv6'):
|
|
assert_charm_supports_ipv6()
|
|
|
|
hosts = get_cluster_hosts()
|
|
clustered = len(hosts) > 1
|
|
bootstrapped = is_bootstrapped()
|
|
|
|
# NOTE: only configure the cluster if we have sufficient peers. This only
|
|
# applies if min-cluster-size is provided and is used to avoid extraneous
|
|
# configuration changes and premature bootstrapping as the cluster is
|
|
# deployed.
|
|
if is_leader():
|
|
log("Leader unit - bootstrap required=%s" % (not bootstrapped),
|
|
DEBUG)
|
|
render_config_restart_on_changed(clustered, hosts,
|
|
bootstrap=not bootstrapped)
|
|
elif bootstrapped:
|
|
log("Cluster is bootstrapped - configuring mysql on this node",
|
|
DEBUG)
|
|
render_config_restart_on_changed(clustered, hosts)
|
|
else:
|
|
log("Not configuring", DEBUG)
|
|
|
|
# Notify any changes to the access network
|
|
update_shared_db_rels()
|
|
|
|
# (re)install pcmkr agent
|
|
install_mysql_ocf()
|
|
|
|
for rid in relation_ids('ha'):
|
|
# make sure all the HA resources are (re)created
|
|
ha_relation_joined(relation_id=rid)
|
|
|
|
if is_relation_made('nrpe-external-master'):
|
|
update_nrpe_config()
|
|
|
|
open_port(DEFAULT_MYSQL_PORT)
|
|
|
|
# the password needs to be updated only if the node was already
|
|
# bootstrapped
|
|
if bootstrapped:
|
|
update_root_password()
|
|
|
|
|
|
@hooks.hook('cluster-relation-joined')
|
|
def cluster_joined():
|
|
relation_settings = {}
|
|
|
|
if config('prefer-ipv6'):
|
|
addr = get_ipv6_addr(exc_list=[config('vip')])[0]
|
|
relation_settings = {'private-address': addr,
|
|
'hostname': socket.gethostname()}
|
|
|
|
relation_settings['cluster-address'] = get_cluster_host_ip()
|
|
|
|
log("Setting cluster relation: '%s'" % (relation_settings),
|
|
level=INFO)
|
|
relation_set(relation_settings=relation_settings)
|
|
|
|
# Ensure all new peers are aware
|
|
cluster_state_uuid = leader_get('bootstrap-uuid')
|
|
if cluster_state_uuid:
|
|
notify_bootstrapped(cluster_rid=relation_id(),
|
|
cluster_uuid=cluster_state_uuid)
|
|
|
|
|
|
@hooks.hook('cluster-relation-departed')
|
|
@hooks.hook('cluster-relation-changed')
|
|
def cluster_changed():
|
|
# Need to make sure hostname is excluded to build inclusion list (paying
|
|
# attention to those excluded by default in peer_echo().
|
|
# TODO(dosaboy): extend peer_echo() to support providing exclusion list as
|
|
# well as inclusion list.
|
|
# NOTE(jamespage): deprecated - leader-election
|
|
rdata = relation_get()
|
|
inc_list = []
|
|
for attr in rdata.iterkeys():
|
|
if attr not in ['hostname', 'private-address', 'cluster-address',
|
|
'public-address']:
|
|
inc_list.append(attr)
|
|
|
|
peer_echo(includes=inc_list)
|
|
# NOTE(jamespage): deprecated - leader-election
|
|
|
|
cluster_joined()
|
|
config_changed()
|
|
|
|
|
|
# TODO: This could be a hook common between mysql and percona-cluster
|
|
@hooks.hook('db-relation-changed')
|
|
@hooks.hook('db-admin-relation-changed')
|
|
def db_changed(relation_id=None, unit=None, admin=None):
|
|
if not is_elected_leader(DC_RESOURCE_NAME):
|
|
log('Service is peered, clearing db relation'
|
|
' as this service unit is not the leader')
|
|
relation_clear(relation_id)
|
|
return
|
|
|
|
if admin not in [True, False]:
|
|
admin = relation_type() == 'db-admin'
|
|
|
|
db_name, _ = (unit or remote_unit()).split("/")
|
|
username = db_name
|
|
db_helper = get_db_helper()
|
|
addr = relation_get('private-address', unit=unit, rid=relation_id)
|
|
password = db_helper.configure_db(addr, db_name, username, admin=admin)
|
|
|
|
db_host = get_db_host(addr, interface=relation_type())
|
|
|
|
relation_set(relation_id=relation_id,
|
|
relation_settings={
|
|
'user': username,
|
|
'password': password,
|
|
'host': db_host,
|
|
'database': db_name,
|
|
})
|
|
|
|
|
|
def get_db_host(client_hostname, interface='shared-db'):
|
|
"""Get address of local database host for use by db clients
|
|
|
|
If an access-network has been configured, expect selected address to be
|
|
on that network. If none can be found, revert to primary address.
|
|
|
|
If network spaces are supported (Juju >= 2.0), use network-get to
|
|
retrieve the network binding for the interface.
|
|
|
|
If DNSHA is set pass os-access-hostname
|
|
|
|
If vip(s) are configured, chooses first available.
|
|
|
|
@param client_hostname: hostname of client side relation setting hostname.
|
|
Only used if access-network is configured
|
|
@param interface: Network space binding to check.
|
|
Usually the relationship name.
|
|
@returns IP for use with db clients
|
|
"""
|
|
vips = config('vip').split() if config('vip') else []
|
|
dns_ha = config('dns-ha')
|
|
access_network = config('access-network')
|
|
if is_clustered() and dns_ha:
|
|
log("Using DNS HA hostname: {}".format(config('os-access-hostname')))
|
|
return config('os-access-hostname')
|
|
elif access_network:
|
|
client_ip = resolve_hostname_to_ip(client_hostname)
|
|
if is_address_in_network(access_network, client_ip):
|
|
if is_clustered():
|
|
for vip in vips:
|
|
if is_address_in_network(access_network, vip):
|
|
return vip
|
|
|
|
log("Unable to identify a VIP in the access-network '%s'" %
|
|
(access_network), level=WARNING)
|
|
else:
|
|
return get_address_in_network(access_network)
|
|
else:
|
|
log("Client address '%s' not in access-network '%s'" %
|
|
(client_ip, access_network), level=WARNING)
|
|
else:
|
|
try:
|
|
# NOTE(jamespage)
|
|
# Try to use network spaces to resolve binding for
|
|
# interface, and to resolve the VIP associated with
|
|
# the binding if provided.
|
|
interface_binding = network_get_primary_address(interface)
|
|
if is_clustered() and vips:
|
|
interface_cidr = resolve_network_cidr(interface_binding)
|
|
for vip in vips:
|
|
if is_address_in_network(interface_cidr, vip):
|
|
return vip
|
|
return interface_binding
|
|
except NotImplementedError:
|
|
# NOTE(jamespage): skip - fallback to previous behaviour
|
|
pass
|
|
|
|
if is_clustered() and vips:
|
|
return vips[0] # NOTE on private network
|
|
|
|
if config('prefer-ipv6'):
|
|
return get_ipv6_addr(exc_list=vips)[0]
|
|
|
|
# Last resort
|
|
return unit_get('private-address')
|
|
|
|
|
|
def configure_db_for_hosts(hosts, database, username, db_helper):
|
|
"""Hosts may be a json-encoded list of hosts or a single hostname."""
|
|
try:
|
|
hosts = json.loads(hosts)
|
|
log("Multiple hostnames provided by relation: %s" % (', '.join(hosts)),
|
|
level=DEBUG)
|
|
except ValueError:
|
|
log("Single hostname provided by relation: %s" % (hosts),
|
|
level=DEBUG)
|
|
hosts = [hosts]
|
|
|
|
for host in hosts:
|
|
password = db_helper.configure_db(host, database, username)
|
|
|
|
return password
|
|
|
|
|
|
# TODO: This could be a hook common between mysql and percona-cluster
|
|
@hooks.hook('shared-db-relation-changed')
|
|
def shared_db_changed(relation_id=None, unit=None):
|
|
if not seeded():
|
|
log("Percona cluster not yet bootstrapped - deferring shared-db rel "
|
|
"until bootstrapped", DEBUG)
|
|
return
|
|
|
|
if not is_leader() and client_node_is_ready():
|
|
# NOTE(jamespage): relation level data candidate
|
|
log('Service is peered, clearing shared-db relation '
|
|
'as this service unit is not the leader')
|
|
relation_clear(relation_id)
|
|
# Each unit needs to set the db information otherwise if the unit
|
|
# with the info dies the settings die with it Bug# 1355848
|
|
if is_relation_made('cluster'):
|
|
for rel_id in relation_ids('shared-db'):
|
|
client_settings = \
|
|
peer_retrieve_by_prefix(rel_id, exc_list=['hostname'])
|
|
|
|
passwords = [key for key in client_settings.keys()
|
|
if 'password' in key.lower()]
|
|
if len(passwords) > 0:
|
|
relation_set(relation_id=rel_id, **client_settings)
|
|
return
|
|
|
|
# Bail if leader is not ready
|
|
if not leader_node_is_ready():
|
|
return
|
|
|
|
settings = relation_get(unit=unit, rid=relation_id)
|
|
access_network = config('access-network')
|
|
db_helper = get_db_helper()
|
|
|
|
peer_store_and_set(relation_id=relation_id,
|
|
relation_settings={'access-network': access_network})
|
|
|
|
singleset = set(['database', 'username', 'hostname'])
|
|
if singleset.issubset(settings):
|
|
# Process a single database configuration
|
|
hostname = settings['hostname']
|
|
database = settings['database']
|
|
username = settings['username']
|
|
|
|
normalized_address = resolve_hostname_to_ip(hostname)
|
|
if access_network and not is_address_in_network(access_network,
|
|
normalized_address):
|
|
# NOTE: for configurations using access-network, only setup
|
|
# database access if remote unit has presented a
|
|
# hostname or ip address thats within the configured
|
|
# network cidr
|
|
log("Host '%s' not in access-network '%s' - ignoring" %
|
|
(normalized_address, access_network), level=INFO)
|
|
return
|
|
|
|
# NOTE: do this before querying access grants
|
|
password = configure_db_for_hosts(hostname, database, username,
|
|
db_helper)
|
|
|
|
allowed_units = db_helper.get_allowed_units(database, username,
|
|
relation_id=relation_id)
|
|
allowed_units = unit_sorted(allowed_units)
|
|
allowed_units = ' '.join(allowed_units)
|
|
relation_set(relation_id=relation_id, allowed_units=allowed_units)
|
|
|
|
db_host = get_db_host(hostname)
|
|
peer_store_and_set(relation_id=relation_id,
|
|
db_host=db_host,
|
|
password=password,
|
|
allowed_units=allowed_units)
|
|
else:
|
|
# Process multiple database setup requests.
|
|
# from incoming relation data:
|
|
# nova_database=xxx nova_username=xxx nova_hostname=xxx
|
|
# quantum_database=xxx quantum_username=xxx quantum_hostname=xxx
|
|
# create
|
|
# {
|
|
# "nova": {
|
|
# "username": xxx,
|
|
# "database": xxx,
|
|
# "hostname": xxx
|
|
# },
|
|
# "quantum": {
|
|
# "username": xxx,
|
|
# "database": xxx,
|
|
# "hostname": xxx
|
|
# }
|
|
# }
|
|
#
|
|
databases = {}
|
|
for k, v in settings.iteritems():
|
|
db = k.split('_')[0]
|
|
x = '_'.join(k.split('_')[1:])
|
|
if db not in databases:
|
|
databases[db] = {}
|
|
databases[db][x] = v
|
|
|
|
allowed_units = {}
|
|
return_data = {}
|
|
for db in databases:
|
|
if singleset.issubset(databases[db]):
|
|
database = databases[db]['database']
|
|
hostname = databases[db]['hostname']
|
|
username = databases[db]['username']
|
|
|
|
normalized_address = resolve_hostname_to_ip(hostname)
|
|
if (access_network and
|
|
not is_address_in_network(access_network,
|
|
normalized_address)):
|
|
# NOTE: for configurations using access-network,
|
|
# only setup database access if remote unit
|
|
# has presented a hostname or ip address
|
|
# thats within the configured network cidr
|
|
return
|
|
|
|
# NOTE: do this before querying access grants
|
|
password = configure_db_for_hosts(hostname, database, username,
|
|
db_helper)
|
|
|
|
a_units = db_helper.get_allowed_units(database, username,
|
|
relation_id=relation_id)
|
|
a_units = ' '.join(unit_sorted(a_units))
|
|
allowed_units_key = '%s_allowed_units' % (db)
|
|
allowed_units[allowed_units_key] = a_units
|
|
|
|
return_data['%s_password' % (db)] = password
|
|
return_data[allowed_units_key] = a_units
|
|
db_host = get_db_host(hostname)
|
|
|
|
if allowed_units:
|
|
relation_set(relation_id=relation_id, **allowed_units)
|
|
else:
|
|
log("No allowed_units - not setting relation settings",
|
|
level=DEBUG)
|
|
|
|
if return_data:
|
|
peer_store_and_set(relation_id=relation_id, db_host=db_host,
|
|
**return_data)
|
|
else:
|
|
log("No return data - not setting relation settings", level=DEBUG)
|
|
|
|
|
|
@hooks.hook('ha-relation-joined')
|
|
def ha_relation_joined(relation_id=None):
|
|
cluster_config = get_hacluster_config()
|
|
sstpsswd = sst_password()
|
|
resources = {'res_mysql_monitor': 'ocf:percona:mysql_monitor'}
|
|
resource_params = {'res_mysql_monitor':
|
|
RES_MONITOR_PARAMS % {'sstpass': sstpsswd}}
|
|
|
|
if config('dns-ha'):
|
|
update_dns_ha_resource_params(relation_id=relation_id,
|
|
resources=resources,
|
|
resource_params=resource_params)
|
|
group_name = 'grp_{}_hostnames'.format(charm_name())
|
|
groups = {group_name: 'res_{}_access_hostname'.format(charm_name())}
|
|
|
|
else:
|
|
vip_iface = (get_iface_for_address(cluster_config['vip']) or
|
|
config('vip_iface'))
|
|
vip_cidr = (get_netmask_for_address(cluster_config['vip']) or
|
|
config('vip_cidr'))
|
|
|
|
if config('prefer-ipv6'):
|
|
res_mysql_vip = 'ocf:heartbeat:IPv6addr'
|
|
vip_params = 'params ipv6addr="%s" cidr_netmask="%s" nic="%s"' % \
|
|
(cluster_config['vip'], vip_cidr, vip_iface)
|
|
else:
|
|
res_mysql_vip = 'ocf:heartbeat:IPaddr2'
|
|
vip_params = 'params ip="%s" cidr_netmask="%s" nic="%s"' % \
|
|
(cluster_config['vip'], vip_cidr, vip_iface)
|
|
|
|
resources['res_mysql_vip'] = res_mysql_vip
|
|
|
|
resource_params['res_mysql_vip'] = vip_params
|
|
|
|
group_name = 'grp_percona_cluster'
|
|
groups = {group_name: 'res_mysql_vip'}
|
|
|
|
clones = {'cl_mysql_monitor': 'res_mysql_monitor meta interleave=true'}
|
|
|
|
colocations = {'colo_percona_cluster': 'inf: {} cl_mysql_monitor'
|
|
''.format(group_name)}
|
|
|
|
locations = {'loc_percona_cluster':
|
|
'{} rule inf: writable eq 1'
|
|
''.format(group_name)}
|
|
|
|
for rel_id in relation_ids('ha'):
|
|
relation_set(relation_id=rel_id,
|
|
corosync_bindiface=cluster_config['ha-bindiface'],
|
|
corosync_mcastport=cluster_config['ha-mcastport'],
|
|
resources=resources,
|
|
resource_params=resource_params,
|
|
groups=groups,
|
|
clones=clones,
|
|
colocations=colocations,
|
|
locations=locations)
|
|
|
|
|
|
@hooks.hook('ha-relation-changed')
|
|
def ha_relation_changed():
|
|
clustered = relation_get('clustered')
|
|
if (clustered and is_elected_leader(DC_RESOURCE_NAME)):
|
|
log('Cluster configured, notifying other services')
|
|
# Tell all related services to start using the VIP
|
|
update_shared_db_rels()
|
|
for r_id in relation_ids('db'):
|
|
for unit in related_units(r_id):
|
|
db_changed(r_id, unit, admin=False)
|
|
for r_id in relation_ids('db-admin'):
|
|
for unit in related_units(r_id):
|
|
db_changed(r_id, unit, admin=True)
|
|
|
|
|
|
@hooks.hook('leader-settings-changed')
|
|
def leader_settings_changed():
|
|
'''Re-trigger install once leader has seeded passwords into install'''
|
|
install_percona_xtradb_cluster()
|
|
# Notify any changes to data in leader storage
|
|
update_shared_db_rels()
|
|
log('leader-settings-changed', level='DEBUG')
|
|
try:
|
|
update_bootstrap_uuid()
|
|
except LeaderNoBootstrapUUIDError:
|
|
# until the bootstrap-uuid attribute is not replicated cluster_ready()
|
|
# will evaluate to False, so it is necessary to feed back this info
|
|
# to the user.
|
|
status_set('waiting', "Waiting for bootstrap-uuid set by leader")
|
|
|
|
|
|
@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, ['mysql'], current_unit)
|
|
nrpe_setup.add_check(
|
|
shortname='mysql_proc',
|
|
description='Check MySQL process {%s}' % current_unit,
|
|
check_cmd='check_procs -c 1:1 -C mysqld'
|
|
)
|
|
nrpe_setup.write()
|
|
|
|
|
|
@hooks.hook('update-status')
|
|
@harden()
|
|
def update_status():
|
|
log('Updating status.')
|
|
|
|
|
|
def main():
|
|
try:
|
|
hooks.execute(sys.argv)
|
|
except UnregisteredHookError as e:
|
|
log('Unknown hook {} - skipping.'.format(e))
|
|
kvstore = kv()
|
|
if not kvstore.get(INITIAL_CLIENT_UPDATE_KEY, False):
|
|
update_shared_db_rels()
|
|
assess_status(register_configs())
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|