def render_config(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(), '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'), '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'), 'is_leader': is_leader(), 'server_id': get_server_id(), 'series_upgrade': is_unit_upgrading_set(), } 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['ipv6'] = True else: context['ipv6'] = False wsrep_provider_options = get_wsrep_provider_options() if wsrep_provider_options: context['wsrep_provider_options'] = wsrep_provider_options if config('wsrep-slave-threads') is not None: context['wsrep_slave_threads'] = config('wsrep-slave-threads') if CompareHostReleases(lsb_release()['DISTRIB_CODENAME']) < 'bionic': # myisam_recover is not valid for PXC 5.7 (introduced in Bionic) so we # only set it for PXC 5.6. context['myisam_recover'] = 'BACKUP' context['wsrep_provider'] = '/usr/lib/libgalera_smm.so' if 'wsrep_slave_threads' not in context: context['wsrep_slave_threads'] = 1 elif CompareHostReleases(lsb_release()['DISTRIB_CODENAME']) >= 'bionic': context['wsrep_provider'] = '/usr/lib/galera3/libgalera_smm.so' context['default_storage_engine'] = 'InnoDB' context['wsrep_log_conflicts'] = True context['innodb_autoinc_lock_mode'] = '2' context['pxc_strict_mode'] = config('pxc-strict-mode') if 'wsrep_slave_threads' not in context: context['wsrep_slave_threads'] = 48 if config('databases-to-replicate'): context['databases_to_replicate'] = get_databases_to_replicate() context['server-id'] = get_server_id() context.update(PerconaClusterHelper().parse_config()) render(os.path.basename(config_file), config_file, context, perms=0o444)