详细说明MySQL PXC构建新节点只需IST传输的方法

xbstream -x; RC=( ${PIPESTATUS[@]} ) (20160528 15:33:00.515)WSREP_SST: [INFO] Cleaning the existing datadir and innodb-data/log directories (20160528 15:33:00.517)removed `/home/mysql/I6000/ib_logfile0'removed `/home/mysql/I6000/ib_logfile1'removed `/home/mysql/I6000/xtrabackup_info'removed `/home/mysql/I6000/xtrabackup_checkpoints'removed `/home/mysql/I6000/performance_schema/rwlock_instances.frm'removed `/home/mysql/I6000/performance_schema/db.opt'removed `/home/mysql/I6000/performance_schema/session_account_connect_attrs.frm'removed `/home/mysql/I6000/performance_schema/performance_timers.frm'removed `/home/mysql/I6000/performance_schema/setup_objects.frm'removed `/home/mysql/I6000/performance_schema/events_statements_summary_by_user_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/events_statements_summary_by_digest.frm'removed `/home/mysql/I6000/performance_schema/events_stages_history.frm'removed `/home/mysql/I6000/performance_schema/events_waits_summary_by_user_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/setup_timers.frm'removed `/home/mysql/I6000/performance_schema/events_waits_summary_by_account_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/events_waits_summary_by_thread_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/session_connect_attrs.frm'removed `/home/mysql/I6000/performance_schema/events_stages_history_long.frm'removed `/home/mysql/I6000/performance_schema/table_io_waits_summary_by_index_usage.frm'removed `/home/mysql/I6000/performance_schema/table_io_waits_summary_by_table.frm'removed `/home/mysql/I6000/performance_schema/host_cache.frm'removed `/home/mysql/I6000/performance_schema/events_waits_summary_global_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/events_statements_summary_by_host_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/events_statements_current.frm'removed `/home/mysql/I6000/performance_schema/events_statements_summary_by_thread_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/mutex_instances.frm'removed `/home/mysql/I6000/performance_schema/events_waits_summary_by_host_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/objects_summary_global_by_type.frm'removed `/home/mysql/I6000/performance_schema/events_waits_current.frm'removed `/home/mysql/I6000/performance_schema/events_stages_summary_global_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/threads.frm'removed `/home/mysql/I6000/performance_schema/events_statements_history.frm'removed `/home/mysql/I6000/performance_schema/file_summary_by_instance.frm'removed `/home/mysql/I6000/performance_schema/table_lock_waits_summary_by_table.frm'removed `/home/mysql/I6000/performance_schema/setup_instruments.frm'removed `/home/mysql/I6000/performance_schema/events_stages_summary_by_thread_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/users.frm'removed `/home/mysql/I6000/performance_schema/socket_summary_by_instance.frm'removed `/home/mysql/I6000/performance_schema/socket_instances.frm'removed `/home/mysql/I6000/performance_schema/setup_consumers.frm'removed `/home/mysql/I6000/performance_schema/events_stages_summary_by_host_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/events_waits_summary_by_instance.frm'removed `/home/mysql/I6000/performance_schema/events_stages_current.frm'removed `/home/mysql/I6000/performance_schema/socket_summary_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/events_statements_history_long.frm'removed `/home/mysql/I6000/performance_schema/cond_instances.frm'removed `/home/mysql/I6000/performance_schema/events_waits_history_long.frm'removed `/home/mysql/I6000/performance_schema/events_waits_history.frm'removed `/home/mysql/I6000/performance_schema/events_statements_summary_by_account_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/events_statements_summary_global_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/events_stages_summary_by_account_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/file_instances.frm'removed `/home/mysql/I6000/performance_schema/hosts.frm'removed `/home/mysql/I6000/performance_schema/setup_actors.frm'removed `/home/mysql/I6000/performance_schema/events_stages_summary_by_user_by_event_name.frm'removed `/home/mysql/I6000/performance_schema/accounts.frm'removed `/home/mysql/I6000/performance_schema/file_summary_by_event_name.frm'removed directory: `/home/mysql/I6000/performance_schema'removed `/home/mysql/I6000/zejin/db.opt'removed `/home/mysql/I6000/zejin/t1.ibd'removed `/home/mysql/I6000/zejin/t1.frm'removed directory: `/home/mysql/I6000/zejin'removed `/home/mysql/I6000/xtrabackup_binlog_info'removed `/home/mysql/I6000/backup-my.cnf'removed `/home/mysql/I6000/xtrabackup_binlog_pos_innodb'removed `/home/mysql/I6000/mysql/time_zone_transition_type.MYI'removed `/home/mysql/I6000/mysql/time_zone_transition.MYI'removed `/home/mysql/I6000/mysql/servers.MYD'removed `/home/mysql/I6000/mysql/ndb_binlog_index.frm'removed `/home/mysql/I6000/mysql/servers.MYI'removed `/home/mysql/I6000/mysql/plugin.frm'removed `/home/mysql/I6000/mysql/time_zone_transition_type.MYD'removed `/home/mysql/I6000/mysql/proxies_priv.MYD'removed `/home/mysql/I6000/mysql/proxies_priv.frm'removed `/home/mysql/I6000/mysql/columns_priv.frm'removed `/home/mysql/I6000/mysql/help_keyword.MYI'removed `/home/mysql/I6000/mysql/func.frm'removed `/home/mysql/I6000/mysql/proc.frm'removed `/home/mysql/I6000/mysql/innodb_table_stats.ibd'removed `/home/mysql/I6000/mysql/help_topic.frm'removed `/home/mysql/I6000/mysql/slow_log.CSM'removed `/home/mysql/I6000/mysql/help_relation.MYD'removed `/home/mysql/I6000/mysql/proc.MYD'removed `/home/mysql/I6000/mysql/help_category.MYD'removed `/home/mysql/I6000/mysql/help_category.frm'removed `/home/mysql/I6000/mysql/columns_priv.MYI'removed `/home/mysql/I6000/mysql/help_topic.MYI'removed `/home/mysql/I6000/mysql/event.frm'removed `/home/mysql/I6000/mysql/db.frm'removed `/home/mysql/I6000/mysql/columns_priv.MYD'removed `/home/mysql/I6000/mysql/time_zone_transition.MYD'removed `/home/mysql/I6000/mysql/innodb_index_stats.frm'removed `/home/mysql/I6000/mysql/time_zone.MYI'removed `/home/mysql/I6000/mysql/event.MYD'removed `/home/mysql/I6000/mysql/slave_master_info.ibd'removed `/home/mysql/I6000/mysql/help_topic.MYD'removed `/home/mysql/I6000/mysql/help_relation.MYI'removed `/home/mysql/I6000/mysql/db.MYD'removed `/home/mysql/I6000/mysql/slave_relay_log_info.ibd'removed `/home/mysql/I6000/mysql/user.MYI'removed `/home/mysql/I6000/mysql/plugin.MYI'removed `/home/mysql/I6000/mysql/proc.MYI'removed `/home/mysql/I6000/mysql/help_relation.frm'removed `/home/mysql/I6000/mysql/time_zone_name.MYD'removed `/home/mysql/I6000/mysql/innodb_table_stats.frm'removed `/home/mysql/I6000/mysql/time_zone.frm'removed `/home/mysql/I6000/mysql/servers.frm'removed `/home/mysql/I6000/mysql/general_log.CSV'removed `/home/mysql/I6000/mysql/ndb_binlog_index.MYI'removed `/home/mysql/I6000/mysql/func.MYD'removed `/home/mysql/I6000/mysql/slave_worker_info.ibd'removed `/home/mysql/I6000/mysql/innodb_index_stats.ibd'removed `/home/mysql/I6000/mysql/time_zone_name.frm'removed `/home/mysql/I6000/mysql/proxies_priv.MYI'removed `/home/mysql/I6000/mysql/slow_log.frm'removed `/home/mysql/I6000/mysql/tables_priv.MYI'removed `/home/mysql/I6000/mysql/tables_priv.MYD'removed `/home/mysql/I6000/mysql/procs_priv.frm'removed `/home/mysql/I6000/mysql/help_keyword.MYD'removed `/home/mysql/I6000/mysql/time_zone_leap_second.MYD'removed `/home/mysql/I6000/mysql/tables_priv.frm'removed `/home/mysql/I6000/mysql/ndb_binlog_index.MYD'removed `/home/mysql/I6000/mysql/slow_log.CSV'removed `/home/mysql/I6000/mysql/time_zone.MYD'removed `/home/mysql/I6000/mysql/procs_priv.MYD'removed `/home/mysql/I6000/mysql/slave_master_info.frm'removed `/home/mysql/I6000/mysql/general_log.frm'removed `/home/mysql/I6000/mysql/help_keyword.frm'removed `/home/mysql/I6000/mysql/time_zone_transition_type.frm'removed `/home/mysql/I6000/mysql/general_log.CSM'removed `/home/mysql/I6000/mysql/time_zone_transition.frm'removed `/home/mysql/I6000/mysql/time_zone_name.MYI'removed `/home/mysql/I6000/mysql/event.MYI'removed `/home/mysql/I6000/mysql/time_zone_leap_second.frm'removed `/home/mysql/I6000/mysql/plugin.MYD'removed `/home/mysql/I6000/mysql/slave_relay_log_info.frm'removed `/home/mysql/I6000/mysql/help_category.MYI'removed `/home/mysql/I6000/mysql/user.frm'removed `/home/mysql/I6000/mysql/user.MYD'removed `/home/mysql/I6000/mysql/procs_priv.MYI'removed `/home/mysql/I6000/mysql/db.MYI'removed `/home/mysql/I6000/mysql/time_zone_leap_second.MYI'removed `/home/mysql/I6000/mysql/slave_worker_info.frm'removed `/home/mysql/I6000/mysql/func.MYI'removed directory: `/home/mysql/I6000/mysql'removed `/home/mysql/I6000/ibdata1'WSREP_SST: [INFO] Cleaning the binlog directory /home/mysql/I6000 as well (20160528 15:33:00.540)rm: cannot remove `/home/mysql/I6000/*.index': No such file or directoryWSREP_SST: [INFO] Waiting for SST streaming to complete! (20160528 15:33:00.547)2016-05-28 15:33:01 4359 [Note] WSREP: (666e7891, 'tcp://192.168.1.241:6030') turning message relay requesting off2016-05-28 15:33:15 4359 [Note] WSREP: 0.0 (node6000_240): State transfer to 1.0 (node6000_241) complete.2016-05-28 15:33:15 4359 [Note] WSREP: Member 0.0 (node6000_240) synced with group.WSREP_SST: [INFO] Preparing the backup at /home/mysql/I6000//.sst (20160528 15:33:15.588)WSREP_SST: [INFO] Evaluating innobackupex --no-version-check --apply-log $rebuildcmd ${DATA} &>${DATA}/innobackup.prepare.log (20160528 15:33:15.591)rm: cannot remove `/home/mysql/I6000//innobackup.prepare.log': No such file or directoryrm: cannot remove `/home/mysql/I6000//innobackup.move.log': No such file or directoryWSREP_SST: [INFO] Moving the backup to /home/mysql/I6000/ (20160528 15:33:20.551)WSREP_SST: [INFO] Evaluating innobackupex --defaults-file=/home/mysql/pxc6000.cnf --defaults-group=mysqld --no-version-check --move-back --force-non-empty-directories ${DATA} &>${DATA}/innobackup.move.log (20160528 15:33:20.554)WSREP_SST: [INFO] Move successful, removing /home/mysql/I6000//.sst (20160528 15:33:20.848)WSREP_SST: [INFO] Galera co-ords from recovery: 6c86dc17-246f-11e6-9955-ae4d7e89eed2:12 (20160528 15:33:20.854)WSREP_SST: [INFO] Total time on joiner: 0 seconds (20160528 15:33:20.857)WSREP_SST: [INFO] Removing the sst_in_progress file (20160528 15:33:20.860)2016-05-28 15:33:20 4359 [Note] WSREP: SST complete, seqno: 122016-05-28 15:33:20 4359 [Note] Plugin 'FEDERATED' is disabled.2016-05-28 15:33:20 4359 [Note] InnoDB: Using atomics to ref count buffer pool pages2016-05-28 15:33:20 4359 [Note] InnoDB: The InnoDB memory heap is disabled2016-05-28 15:33:20 4359 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins2016-05-28 15:33:20 4359 [Note] InnoDB: Memory barrier is not used2016-05-28 15:33:20 4359 [Note] InnoDB: Compressed tables use zlib 1.2.32016-05-28 15:33:20 4359 [Note] InnoDB: Using Linux native AIO2016-05-28 15:33:20 4359 [Note] InnoDB: Using CPU crc32 instructions2016-05-28 15:33:20 4359 [Note] InnoDB: Initializing buffer pool, size = 100.0M2016-05-28 15:33:20 4359 [Note] InnoDB: Completed initialization of buffer pool2016-05-28 15:33:20 4359 [Note] InnoDB: Highest supported file format is Barracuda.2016-05-28 15:33:20 4359 [Note] InnoDB: 128 rollback segment(s) are active.2016-05-28 15:33:20 4359 [Note] InnoDB: Waiting for purge to start2016-05-28 15:33:21 4359 [Note] InnoDB: Percona XtraDB (percona.com) 5.6.26-74.0 started; log sequence number 16501982016-05-28 15:33:21 4359 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 73f9a99b-24a6-11e6-a163-000c2973aa48.2016-05-28 15:33:21 4359 [Note] RSA private key file not found: /home/mysql/I6000//private_key.pem. Some authentication plugins will not work.2016-05-28 15:33:21 4359 [Note] RSA public key file not found: /home/mysql/I6000//public_key.pem. Some authentication plugins will not work.2016-05-28 15:33:21 4359 [Note] Server hostname (bind-address): '*'; port: 60002016-05-28 15:33:21 4359 [Note] IPv6 is available.2016-05-28 15:33:21 4359 [Note] - '::' resolves to '::';2016-05-28 15:33:21 4359 [Note] Server socket created on IP: '::'.2016-05-28 15:33:21 4359 [Warning] 'user' entry 'root@zejin240' ignored in --skip-name-resolve mode.2016-05-28 15:33:21 4359 [Warning] 'user' entry '@zejin240' ignored in --skip-name-resolve mode.2016-05-28 15:33:21 4359 [Warning] 'proxies_priv' entry '@ root@zejin240' ignored in --skip-name-resolve mode.2016-05-28 15:33:21 4359 [Note] Event Scheduler: Loaded 0 events2016-05-28 15:33:21 4359 [Note] WSREP: Signalling provider to continue.2016-05-28 15:33:21 4359 [Note] WSREP: Initialized wsrep sidno 22016-05-28 15:33:21 4359 [Note] WSREP: SST received: 6c86dc17-246f-11e6-9955-ae4d7e89eed2:122016-05-28 15:33:21 4359 [Note] /usr/local/pxc_56/bin/mysqld: ready for connections.Version: '5.6.26-74.0-25.12-log' socket: '/home/mysql/I6000/mysql.sock' port: 6000 Percona XtraDB Cluster binary (GPL) 5.6.26-25.12, Revision 624ef81, wsrep_25.122016-05-28 15:33:21 4359 [Note] WSREP: 1.0 (node6000_241): State transfer from 0.0 (node6000_240) complete.2016-05-28 15:33:21 4359 [Note] WSREP: Shifting JOINER -> JOINED (TO: 12)2016-05-28 15:33:21 4359 [Note] WSREP: Member 1.0 (node6000_241) synced with group.2016-05-28 15:33:21 4359 [Note] WSREP: Shifting JOINED -> SYNCED (TO: 12)2016-05-28 15:33:21 4359 [Note] WSREP: Synchronized with group, ready for connections2016-05-28 15:33:21 4359 [Note] WSREP: wsrep_notify_cmd is not defined, skipping notification.

可以看到里面有大量的removed操作，它会删除数据文件夹里面的所有文件，再从主节点那里通过SST获取数据官方说明：

XtraBackup SST works in two stages:   ? Stage I on joiner checks if it is SST or IST based on presence of xtrabackup_ist file.   ? In Stage II it starts the data transfer, if it's SST, it empties the data directory sans few files (galera.cache, sst_in_progress, grastate.dat) and then proceed with the SST or if it's IST, proceeds as before.

至此我们完成了pxc环境下避免新节点加入时需要进行SST的方法，在数据量大时SST将会占用大量的资源，配置的gcache.size足够容纳从备份到恢复此时间段内主节点产生的数据量，建议通过业务低峰期时通过脚本来实现此新节点加入操作。

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关键词：详细说明MySQL PXC构建新节点只需IST传输的办法