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基於Xtrabackup 全備和還原以及增量備份和還原 的環境和數據準備的操做node
測試數據準備
在
friends表中錄入一條數據mysql
mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | xtra_test | +--------------------+ 4 rows in set (0.00 sec) mysql> show tables; +---------------------+ | Tables_in_xtra_test | +---------------------+ | friends | +---------------------+ 1 row in set (0.00 sec) mysql> INSERT INTO friends(id, name) VALUES (1, 'tom' ); Query OK, 1 row affected (0.00 sec) mysql> select * from friends; +----+------+ | id | name | +----+------+ | 1 | jack | | 1 | tom | +----+------+ 2 rows in set (0.00 sec)
進行全量備份
[root@node ~]# cd /opt/backup/ [root@node backup]# pwd /opt/backup [root@node backup]# ls full incr
full 目錄存放全量備份的數據
incr 目錄存放增量備份的數據sql
[root@node backup]# innobackupex --defaults-file=/opt/mysql/my.cnf --user=root --password=234567 --port=3306 /opt/backup/full/
trabackup: recognized server arguments: --datadir=/opt/mysql/data --server-id=1 --innodb_data_home_dir=/opt/mysql/data --innodb_flush_log_at_trx_commit=0 --innodb_log_buffer_size=16M --innodb_buffer_pool_size=256M --innodb_log_file_size=128M --innodb_autoextend_increment=1000 --innodb_open_files=300 --innodb_file_per_table=1 --innodb_checksum_algorithm=0 --open_files_limit=4161 --log_bin=/opt/mysql-5.6/data/mysql-bin
xtrabackup: recognized client arguments: --datadir=/opt/mysql/data --server-id=1 --innodb_data_home_dir=/opt/mysql/data --innodb_flush_log_at_trx_commit=0 --innodb_log_buffer_size=16M --innodb_buffer_pool_size=256M --innodb_log_file_size=128M --innodb_autoextend_increment=1000 --innodb_open_files=300 --innodb_file_per_table=1 --innodb_checksum_algorithm=0 --open_files_limit=4161 --log_bin=/opt/mysql-5.6/data/mysql-bin
181211 15:35:25 innobackupex: Starting the backup operation
IMPORTANT: Please check that the backup run completes successfully.
At the end of a successful backup run innobackupex
prints "completed OK!".
... ...
181211 15:35:28 Executing UNLOCK TABLES
181211 15:35:28 All tables unlocked
181211 15:35:28 Backup created in directory '/opt/backup/full/2018-12-11_15-35-25/'
MySQL binlog position: filename 'mysql-bin.000001', position '372'
181211 15:35:28 [00] Writing /opt/backup/full/2018-12-11_15-35-25/backup-my.cnf
181211 15:35:28 [00] ...done
181211 15:35:28 [00] Writing /opt/backup/full/2018-12-11_15-35-25/xtrabackup_info
181211 15:35:28 [00] ...done
xtrabackup: Transaction log of lsn (1654624) to (1654624) was copied.
181211 15:35:28 completed OK!
備份好了，下面查看數據庫
[root@node backup]# ls -l full/2018-12-11_15-35-25/ total 12320 -rw-r----- 1 root root 481 Dec 11 15:35 backup-my.cnf -rw-r----- 1 root root 12582912 Dec 11 15:35 ibdata1 drwxr-x--- 2 root root 4096 Dec 11 15:35 mysql drwxr-x--- 2 root root 4096 Dec 11 15:35 performance_schema -rw-r----- 1 root root 21 Dec 11 15:35 xtrabackup_binlog_info -rw-r----- 1 root root 113 Dec 11 15:35 xtrabackup_checkpoints -rw-r----- 1 root root 521 Dec 11 15:35 xtrabackup_info -rw-r----- 1 root root 2560 Dec 11 15:35 xtrabackup_logfile drwxr-x--- 2 root root 4096 Dec 11 15:35 xtra_test
第一次增量插入一條數據
mysql> INSERT INTO friends(id, name) VALUES (2, 'winstom' ); Query OK, 1 row affected (0.00 sec) mysql> select * from friends; +----+---------+ | id | name | +----+---------+ | 1 | jack | | 1 | tom | | 2 | winstom | +----+---------+ 3 rows in set (0.00 sec) mysql>
進行第一次增量備份
注意
特別強調bash
第一次增量備份，要以全量備份爲節點，進行備份app
增量備份使用--incremental參數加 增量備份的目錄。socket
因此 --incremental-basedir 跟的參數是全量備份的目錄tcp
[root@node backup]# innobackupex --defaults-file=/opt/mysql/my.cnf --user=root --password=234567 --incremental /opt/backup/incr/ --incremental-basedir=/opt/backup/full/2018-12-11_15-35-25/
xtrabackup: recognized server arguments: --datadir=/opt/mysql/data --server-id=1 --innodb_data_home_dir=/opt/mysql/data --innodb_flush_log_at_trx_commit=0 --innodb_log_buffer_size=16M --innodb_buffer_pool_size=256M --innodb_log_file_size=128M --innodb_autoextend_increment=1000 --innodb_open_files=300 --innodb_file_per_table=1 --innodb_checksum_algorithm=0 --open_files_limit=4161 --log_bin=/opt/mysql-5.6/data/mysql-bin
xtrabackup: recognized client arguments: --datadir=/opt/mysql/data --server-id=1 --innodb_data_home_dir=/opt/mysql/data --innodb_flush_log_at_trx_commit=0 --innodb_log_buffer_size=16M --innodb_buffer_pool_size=256M --innodb_log_file_size=128M --innodb_autoextend_increment=1000 --innodb_open_files=300 --innodb_file_per_table=1 --innodb_checksum_algorithm=0 --open_files_limit=4161 --log_bin=/opt/mysql-5.6/data/mysql-bin
181211 15:46:22 innobackupex: Starting the backup operation
IMPORTANT: Please check that the backup run completes successfully.
At the end of a successful backup run innobackupex
prints "completed OK!".
... ...
181211 15:46:24 Executing UNLOCK TABLES
181211 15:46:24 All tables unlocked
181211 15:46:24 Backup created in directory '/opt/backup/incr/2018-12-11_15-46-22/'
MySQL binlog position: filename 'mysql-bin.000001', position '628'
181211 15:46:24 [00] Writing /opt/backup/incr/2018-12-11_15-46-22/backup-my.cnf
181211 15:46:24 [00] ...done
181211 15:46:24 [00] Writing /opt/backup/incr/2018-12-11_15-46-22/xtrabackup_info
181211 15:46:24 [00] ...done
xtrabackup: Transaction log of lsn (1654936) to (1654936) was copied.
181211 15:46:24 completed OK!
第一次增量備份完成，下面進行查看測試
[root@node backup]# ll incr/2018-12-11_15-46-22/ total 132 -rw-r----- 1 root root 481 Dec 11 15:46 backup-my.cnf -rw-r----- 1 root root 98304 Dec 11 15:46 ibdata1.delta -rw-r----- 1 root root 44 Dec 11 15:46 ibdata1.meta drwxr-x--- 2 root root 4096 Dec 11 15:46 mysql drwxr-x--- 2 root root 4096 Dec 11 15:46 performance_schema -rw-r----- 1 root root 21 Dec 11 15:46 xtrabackup_binlog_info -rw-r----- 1 root root 117 Dec 11 15:46 xtrabackup_checkpoints -rw-r----- 1 root root 589 Dec 11 15:46 xtrabackup_info -rw-r----- 1 root root 2560 Dec 11 15:46 xtrabackup_logfile drwxr-x--- 2 root root 4096 Dec 11 15:46 xtra_test
第二次增量插入一條數據
mysql> INSERT INTO friends(id, name) VALUES (3, 'tracey' ); Query OK, 1 row affected (0.00 sec) mysql> select * from friends; +----+---------+ | id | name | +----+---------+ | 1 | jack | | 1 | tom | | 2 | winstom | | 3 | tracey | +----+---------+ 4 rows in set (0.00 sec)
進行第二次增量備份
注意
特別強調，單獨拉了一個菜單
在第二次增量備份的時候，再也不是以全量爲節點，要以上一次增量備份爲節點來進行第二次的增量備份
因此--incremental-basedir參數後面跟的是上一次增量備份的目錄；
[root@node backup]# innobackupex --defaults-file=/opt/mysql/my.cnf --user=root --password=234567 --incremental /opt/backup/incr/ --incremental-basedir=/opt/backup/incr/2018-12-11_15-46-22/
xtrabackup: recognized server arguments: --datadir=/opt/mysql/data --server-id=1 --innodb_data_home_dir=/opt/mysql/data --innodb_flush_log_at_trx_commit=0 --innodb_log_buffer_size=16M --innodb_buffer_pool_size=256M --innodb_log_file_size=128M --innodb_autoextend_increment=1000 --innodb_open_files=300 --innodb_file_per_table=1 --innodb_checksum_algorithm=0 --open_files_limit=4161 --log_bin=/opt/mysql-5.6/data/mysql-bin
xtrabackup: recognized client arguments: --datadir=/opt/mysql/data --server-id=1 --innodb_data_home_dir=/opt/mysql/data --innodb_flush_log_at_trx_commit=0 --innodb_log_buffer_size=16M --innodb_buffer_pool_size=256M --innodb_log_file_size=128M --innodb_autoextend_increment=1000 --innodb_open_files=300 --innodb_file_per_table=1 --innodb_checksum_algorithm=0 --open_files_limit=4161 --log_bin=/opt/mysql-5.6/data/mysql-bin
181211 15:49:41 innobackupex: Starting the backup operation
IMPORTANT: Please check that the backup run completes successfully.
At the end of a successful backup run innobackupex
prints "completed OK!".
... ...
181211 15:49:43 Executing UNLOCK TABLES
181211 15:49:43 All tables unlocked
181211 15:49:43 Backup created in directory '/opt/backup/incr/2018-12-11_15-49-41/'
MySQL binlog position: filename 'mysql-bin.000001', position '883'
181211 15:49:43 [00] Writing /opt/backup/incr/2018-12-11_15-49-41/backup-my.cnf
181211 15:49:43 [00] ...done
181211 15:49:43 [00] Writing /opt/backup/incr/2018-12-11_15-49-41/xtrabackup_info
181211 15:49:43 [00] ...done
xtrabackup: Transaction log of lsn (1655979) to (1655979) was copied.
181211 15:49:43 completed OK!
備份完成，下面查看
[root@node backup]# ll incr/2018-12-11_15-49-41/ total 228 -rw-r----- 1 root root 481 Dec 11 15:49 backup-my.cnf -rw-r----- 1 root root 196608 Dec 11 15:49 ibdata1.delta -rw-r----- 1 root root 44 Dec 11 15:49 ibdata1.meta drwxr-x--- 2 root root 4096 Dec 11 15:49 mysql drwxr-x--- 2 root root 4096 Dec 11 15:49 performance_schema -rw-r----- 1 root root 21 Dec 11 15:49 xtrabackup_binlog_info -rw-r----- 1 root root 117 Dec 11 15:49 xtrabackup_checkpoints -rw-r----- 1 root root 589 Dec 11 15:49 xtrabackup_info -rw-r----- 1 root root 2560 Dec 11 15:49 xtrabackup_logfile drwxr-x--- 2 root root 4096 Dec 11 15:49 xtra_test
查看xtrabackup_binlog_info中的binlog位置
[root@node backup]# cat full/2018-12-11_15-35-25/xtrabackup_binlog_info mysql-bin.000001 372 [root@node backup]# cat incr/2018-12-11_15-46-22/xtrabackup_binlog_info mysql-bin.000001 628 [root@node backup]# cat incr/2018-12-11_15-49-41/xtrabackup_binlog_info mysql-bin.000001 883
查看xtrabackup_checkpoints中lsn
[root@node backup]# cat full/2018-12-11_15-35-25/xtrabackup_checkpoints backup_type = full-backuped from_lsn = 0 to_lsn = 1654624 last_lsn = 1654624 compact = 0 recover_binlog_info = 0 [root@node backup]# cat incr/2018-12-11_15-46-22/xtrabackup_checkpoints backup_type = incremental from_lsn = 1654624 to_lsn = 1654936 last_lsn = 1654936 compact = 0 recover_binlog_info = 0 [root@node backup]# cat incr/2018-12-11_15-49-41/xtrabackup_checkpoints backup_type = incremental from_lsn = 1654936 to_lsn = 1655979 last_lsn = 1655979 compact = 0 recover_binlog_info = 0
這裏能夠看到，全備的lsn是從0開始的，第一次增量備份的lsn是從全量備份的lsn結束的位置開始的，第二次增量備份同理，從第一次增量備份的lsn結束的位置開始的。
模擬數據刪除
之間刪除
xtra_test數據庫，來模擬數據丟失等狀況
[root@node full]# mysql -uroot -p234567 Warning: Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.6.39-log MySQL Community Server (GPL) Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | xtra_test | +--------------------+ 4 rows in set (0.00 sec) mysql> drop database xtra_test; Query OK, 1 row affected (0.01 sec) mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | +--------------------+ 3 rows in set (0.00 sec)
本次僅僅是演示，請勿在生產操做次命令；
數據恢復操做
恢復具體步驟
- 先把xtrabackup備份下來的目錄進行再次備份，防止在還原的時候誤操做，致使備份不可用；
- 關閉要回復的數據庫實例；
- 移除須要恢復數據的MySQL實例下的data目錄，建議
mv移動到別的目錄下； - 操做全量備份使用
--apply-log和--redo-only參數對全量備份進行恢復前準備操做，如事物回滾等操做； - 操做第一次增量備份將第一次增量備份應用到徹底備份，同用使用
--apply-log和--redo-only參數 - 操做第二次增量備份將第二次增量備份應用到徹底備份，使用
--apply-log參數，不要加--redo-only參數。 - 把全部合在一塊兒的徹底備份總體進行一次apply操做，回滾未提交的數據
- 使用
--copy-back和--rsync參數直接對全量備份操做後的目錄進行恢復； - 受權MySQL實例下的data目錄後，啓動數據庫
- 驗證恢復數據
第一步 備份
[root@node backup]# cd full/ [root@node full]# pwd /opt/backup/full [root@node full]# ls 2018-12-11_15-35-25 [root@node full]# cp -a 2018-12-11_15-35-25/ 2018-12-11_15-35-25_bak [root@node full]# ll total 8 drwxr-x--- 5 root root 4096 Dec 11 15:35 2018-12-11_15-35-25 drwxr-x--- 5 root root 4096 Dec 11 15:35 2018-12-11_15-35-25_bak [root@node full]# cd ../incr/ [root@node incr]# ll total 8 drwxr-x--- 5 root root 4096 Dec 11 15:46 2018-12-11_15-46-22 drwxr-x--- 5 root root 4096 Dec 11 15:49 2018-12-11_15-49-41 [root@node incr]# cp -a 2018-12-11_15-46-22/ 2018-12-11_15-46-22_bak [root@node incr]# cp -a 2018-12-11_15-49-41 2018-12-11_15-49-41_bak [root@node incr]# ll total 16 drwxr-x--- 5 root root 4096 Dec 11 15:46 2018-12-11_15-46-22 drwxr-x--- 5 root root 4096 Dec 11 15:46 2018-12-11_15-46-22_bak drwxr-x--- 5 root root 4096 Dec 11 15:49 2018-12-11_15-49-41 drwxr-x--- 5 root root 4096 Dec 11 15:49 2018-12-11_15-49-41_bak
第二步 關閉MySQL實例
[root@node incr]# /etc/init.d/mysqld stop Shutting down MySQL.. [ OK ] [root@node incr]# ps aux|grep mysql root 20447 0.0 0.1 112720 2180 pts/1 S+ 16:18 0:00 grep --color=auto mysql [root@node incr]# netstat -lntup | grep 3306 [root@node incr]#
第三步 移除要恢復數據的MySQL的data目錄
[root@node incr]# ll /opt/mysql/data/ total 286760 -rw-rw---- 1 mysql mysql 56 Dec 11 15:04 auto.cnf -rw-r----- 1 mysql mysql 12582912 Dec 11 16:17 ibdata1 -rw-r----- 1 mysql mysql 134217728 Dec 11 16:17 ib_logfile0 -rw-r----- 1 mysql mysql 134217728 Dec 11 15:02 ib_logfile1 -rw-r----- 1 mysql mysql 12582912 Dec 11 15:02 ibtmp1 drwxr-x--- 2 mysql mysql 4096 Dec 11 15:02 mysql -rw-rw---- 1 mysql mysql 906 Dec 11 16:17 mysql-bin.000001 -rw-rw---- 1 mysql mysql 37 Dec 11 15:04 mysql-bin.index drwxr-x--- 2 mysql mysql 4096 Dec 11 15:02 performance_schema -rw-r----- 1 mysql mysql 21 Dec 11 15:02 xtrabackup_binlog_pos_innodb -rw-r----- 1 mysql mysql 509 Dec 11 15:02 xtrabackup_info -rw-r----- 1 mysql mysql 1 Dec 11 15:02 xtrabackup_master_key_id drwxr-x--- 2 mysql mysql 4096 Dec 11 15:02 xtra_test [root@node incr]# mv /opt/mysql/data /tmp/ [root@node incr]# ls -ld /tmp/data/ drwxr-x--- 5 mysql mysql 4096 Dec 11 15:04 /tmp/data/
第四步 準備全量備份
[root@node backup]# innobackupex --apply-log --redo-only /opt/backup/full/2018-12-11_15-35-25/
xtrabackup: recognized server arguments: --innodb_checksum_algorithm=crc32 --innodb_log_checksum_algorithm=innodb --innodb_data_file_path=ibdata1:12M:autoextend --innodb_log_files_in_group=2 --innodb_log_file_size=134217728 --innodb_fast_checksum=0 --innodb_page_size=16384 --innodb_log_block_size=512 --innodb_undo_directory=. --innodb_undo_tablespaces=0 --server-id=1 --redo-log-version=0
xtrabackup: recognized client arguments: --innodb_checksum_algorithm=crc32 --innodb_log_checksum_algorithm=innodb --innodb_data_file_path=ibdata1:12M:autoextend --innodb_log_files_in_group=2 --innodb_log_file_size=134217728 --innodb_fast_checksum=0 --innodb_page_size=16384 --innodb_log_block_size=512 --innodb_undo_directory=. --innodb_undo_tablespaces=0 --server-id=1 --redo-log-version=0
181211 16:40:24 innobackupex: Starting the apply-log operation
IMPORTANT: Please check that the apply-log run completes successfully.
At the end of a successful apply-log run innobackupex
prints "completed OK!".
... ...
xtrabackup: starting shutdown with innodb_fast_shutdown = 1
InnoDB: Starting shutdown...
InnoDB: Shutdown completed; log sequence number 1654633
InnoDB: Number of pools: 1
181211 16:40:26 completed OK!
第五步 應用第一次增量備份到全量備份
[root@node backup]# innobackupex --apply-log --redo-only /opt/backup/full/2018-12-11_15-35-25/ --incremental-dir=/opt/backup/incr/2018-12-11_15-46-22/
xtrabackup: recognized server arguments: --innodb_checksum_algorithm=crc32 --innodb_log_checksum_algorithm=innodb --innodb_data_file_path=ibdata1:12M:autoextend --innodb_log_files_in_group=2 --innodb_log_file_size=134217728 --innodb_fast_checksum=0 --innodb_page_size=16384 --innodb_log_block_size=512 --innodb_undo_directory=. --innodb_undo_tablespaces=0 --server-id=1 --redo-log-version=0
xtrabackup: recognized client arguments: --innodb_checksum_algorithm=crc32 --innodb_log_checksum_algorithm=innodb --innodb_data_file_path=ibdata1:12M:autoextend --innodb_log_files_in_group=2 --innodb_log_file_size=134217728 --innodb_fast_checksum=0 --innodb_page_size=16384 --innodb_log_block_size=512 --innodb_undo_directory=. --innodb_undo_tablespaces=0 --server-id=1 --redo-log-version=0
181211 16:40:57 innobackupex: Starting the apply-log operation
IMPORTANT: Please check that the apply-log run completes successfully.
At the end of a successful apply-log run innobackupex
prints "completed OK!".
... ...
181211 16:40:59 [01] Copying /opt/backup/incr/2018-12-11_15-46-22/performance_schema/events_waits_summary_global_by_event_name.frm to ./performance_schema/events_waits_summary_global_by_event_name.frm
181211 16:40:59 [01] ...done
181211 16:40:59 [00] Copying /opt/backup/incr/2018-12-11_15-46-22//xtrabackup_binlog_info to ./xtrabackup_binlog_info
181211 16:40:59 [00] ...done
181211 16:40:59 [00] Copying /opt/backup/incr/2018-12-11_15-46-22//xtrabackup_info to ./xtrabackup_info
181211 16:40:59 [00] ...done
181211 16:40:59 completed OK!
查看全量備份的xtrabackup_checkpoints
[root@node full]# cat 2018-12-11_15-35-25/xtrabackup_checkpoints backup_type = log-applied from_lsn = 0 to_lsn = 1654936 last_lsn = 1654936 compact = 0 recover_binlog_info = 0
對比以前查看的第一次增量備份的last_lsn位置，在應用第一次增量備份到全量後，能夠看到last_lsn已經被應用和第一次全量備份的位置相同了
第六步 應用第二次增量備份到全量備份
注意 在引用最後一次增量備份到全量時，不須要增長--redo-only參數。
[root@node backup]# innobackupex --apply-log /opt/backup/full/2018-12-11_15-35-25/ --incremental-dir=/opt/backup/incr/2018-12-11_15-49-41/
xtrabackup: recognized server arguments: --innodb_checksum_algorithm=crc32 --innodb_log_checksum_algorithm=innodb --innodb_data_file_path=ibdata1:12M:autoextend --innodb_log_files_in_group=2 --innodb_log_file_size=134217728 --innodb_fast_checksum=0 --innodb_page_size=16384 --innodb_log_block_size=512 --innodb_undo_directory=. --innodb_undo_tablespaces=0 --server-id=1 --redo-log-version=0
xtrabackup: recognized client arguments: --innodb_checksum_algorithm=crc32 --innodb_log_checksum_algorithm=innodb --innodb_data_file_path=ibdata1:12M:autoextend --innodb_log_files_in_group=2 --innodb_log_file_size=134217728 --innodb_fast_checksum=0 --innodb_page_size=16384 --innodb_log_block_size=512 --innodb_undo_directory=. --innodb_undo_tablespaces=0 --server-id=1 --redo-log-version=0
181211 16:42:04 innobackupex: Starting the apply-log operation
IMPORTANT: Please check that the apply-log run completes successfully.
At the end of a successful apply-log run innobackupex
prints "completed OK!".
... ...
InnoDB: Renaming log file ./ib_logfile101 to ./ib_logfile0
InnoDB: New log files created, LSN=1655998
InnoDB: Highest supported file format is Barracuda.
InnoDB: Log scan progressed past the checkpoint lsn 1656332
InnoDB: Doing recovery: scanned up to log sequence number 1656341 (0%)
InnoDB: Database was not shutdown normally!
InnoDB: Starting crash recovery.
InnoDB: xtrabackup: Last MySQL binlog file position 883, file name mysql-bin.000001
InnoDB: Removed temporary tablespace data file: "ibtmp1"
InnoDB: Creating shared tablespace for temporary tables
InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
InnoDB: File './ibtmp1' size is now 12 MB.
InnoDB: 96 redo rollback segment(s) found. 1 redo rollback segment(s) are active.
InnoDB: 32 non-redo rollback segment(s) are active.
InnoDB: Waiting for purge to start
InnoDB: 5.7.19 started; log sequence number 1656341
xtrabackup: starting shutdown with innodb_fast_shutdown = 1
InnoDB: FTS optimize thread exiting.
InnoDB: Starting shutdown...
InnoDB: Shutdown completed; log sequence number 1656360
181211 16:42:10 completed OK!
查看全量備份的xtrabackup_checkpoints
[root@node full]# cat 2018-12-11_15-35-25/xtrabackup_checkpoints backup_type = full-prepared from_lsn = 0 to_lsn = 1655979 last_lsn = 1655979 compact = 0 recover_binlog_info = 0
對比以前查看的第二次增量備份的last_lsn位置，在應用第二次增量備份到全量後，能夠看到last_lsn已經被應用和第二次全量備份的位置相同了
第七步 把備份總體進行一次apply操做
[root@node full]# innobackupex --apply-log /opt/backup/full/2018-12-11_15-35-25/
xtrabackup: recognized server arguments: --innodb_checksum_algorithm=crc32 --innodb_log_checksum_algorithm=innodb --innodb_data_file_path=ibdata1:12M:autoextend --innodb_log_files_in_group=2 --innodb_log_file_size=134217728 --innodb_fast_checksum=0 --innodb_page_size=16384 --innodb_log_block_size=512 --innodb_undo_directory=. --innodb_undo_tablespaces=0 --server-id=1 --redo-log-version=0
xtrabackup: recognized client arguments: --innodb_checksum_algorithm=crc32 --innodb_log_checksum_algorithm=innodb --innodb_data_file_path=ibdata1:12M:autoextend --innodb_log_files_in_group=2 --innodb_log_file_size=134217728 --innodb_fast_checksum=0 --innodb_page_size=16384 --innodb_log_block_size=512 --innodb_undo_directory=. --innodb_undo_tablespaces=0 --server-id=1 --redo-log-version=0
181211 17:13:33 innobackupex: Starting the apply-log operation
IMPORTANT: Please check that the apply-log run completes successfully.
At the end of a successful apply-log run innobackupex
prints "completed OK!".
... ...
InnoDB: PUNCH HOLE support available
InnoDB: Mutexes and rw_locks use GCC atomic builtins
InnoDB: Uses event mutexes
InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
InnoDB: Compressed tables use zlib 1.2.7
InnoDB: Number of pools: 1
InnoDB: Using CPU crc32 instructions
InnoDB: Initializing buffer pool, total size = 100M, instances = 1, chunk size = 100M
InnoDB: Completed initialization of buffer pool
InnoDB: page_cleaner coordinator priority: -20
InnoDB: Highest supported file format is Barracuda.
InnoDB: Removed temporary tablespace data file: "ibtmp1"
InnoDB: Creating shared tablespace for temporary tables
InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
InnoDB: File './ibtmp1' size is now 12 MB.
InnoDB: 96 redo rollback segment(s) found. 1 redo rollback segment(s) are active.
InnoDB: 32 non-redo rollback segment(s) are active.
InnoDB: Waiting for purge to start
InnoDB: 5.7.19 started; log sequence number 1656379
xtrabackup: starting shutdown with innodb_fast_shutdown = 1
InnoDB: FTS optimize thread exiting.
InnoDB: Starting shutdown...
InnoDB: Shutdown completed; log sequence number 1656398
181211 17:13:36 completed OK!
第八步 使用--copy-back 參數恢復拷貝到data目錄
[root@node full]# innobackupex --defaults-file=/opt/mysql-5.6/my.cnf --copy-back /opt/backup/full/2018-12-11_15-35-25/
xtrabackup: recognized server arguments: --datadir=/opt/mysql/data --server-id=1 --innodb_data_home_dir=/opt/mysql/data --innodb_flush_log_at_trx_commit=0 --innodb_log_buffer_size=16M --innodb_buffer_pool_size=256M --innodb_log_file_size=128M --innodb_autoextend_increment=1000 --innodb_open_files=300 --innodb_file_per_table=1 --innodb_checksum_algorithm=0 --open_files_limit=4161 --log_bin=/opt/mysql-5.6/data/mysql-bin
xtrabackup: recognized client arguments: --datadir=/opt/mysql/data --server-id=1 --innodb_data_home_dir=/opt/mysql/data --innodb_flush_log_at_trx_commit=0 --innodb_log_buffer_size=16M --innodb_buffer_pool_size=256M --innodb_log_file_size=128M --innodb_autoextend_increment=1000 --innodb_open_files=300 --innodb_file_per_table=1 --innodb_checksum_algorithm=0 --open_files_limit=4161 --log_bin=/opt/mysql-5.6/data/mysql-bin
181211 17:14:21 innobackupex: Starting the copy-back operation
IMPORTANT: Please check that the copy-back run completes successfully.
At the end of a successful copy-back run innobackupex
prints "completed OK!".
... ...
181211 17:14:25 [01] Copying ./performance_schema/events_statements_summary_by_thread_by_event_name.frm to /opt/mysql/data/performance_schema/events_statements_summary_by_thread_by_event_name.frm
181211 17:14:25 [01] ...done
181211 17:14:25 [01] Copying ./performance_schema/mutex_instances.frm to /opt/mysql/data/performance_schema/mutex_instances.frm
181211 17:14:25 [01] ...done
181211 17:14:25 [01] Copying ./performance_schema/events_waits_summary_global_by_event_name.frm to /opt/mysql/data/performance_schema/events_waits_summary_global_by_event_name.frm
181211 17:14:25 [01] ...done
181211 17:14:25 [01] Copying ./xtrabackup_info to /opt/mysql/data/xtrabackup_info
181211 17:14:25 [01] ...done
181211 17:14:25 [01] Copying ./xtrabackup_master_key_id to /opt/mysql/data/xtrabackup_master_key_id
181211 17:14:25 [01] ...done
181211 17:14:25 completed OK!
驗證操做
[root@node full]# ls -l /opt/mysql/data/ total 286744 -rw-r----- 1 root root 12582912 Dec 11 17:14 ibdata1 -rw-r----- 1 root root 134217728 Dec 11 17:14 ib_logfile0 -rw-r----- 1 root root 134217728 Dec 11 17:14 ib_logfile1 -rw-r----- 1 root root 12582912 Dec 11 17:14 ibtmp1 drwxr-x--- 2 root root 4096 Dec 11 17:14 mysql drwxr-x--- 2 root root 4096 Dec 11 17:14 performance_schema -rw-r----- 1 root root 21 Dec 11 17:14 xtrabackup_binlog_pos_innodb -rw-r----- 1 root root 589 Dec 11 17:14 xtrabackup_info -rw-r----- 1 root root 1 Dec 11 17:14 xtrabackup_master_key_id drwxr-x--- 2 root root 4096 Dec 11 17:14 xtra_test
第九步 受權並啓動MySQL
[root@node full]# chown -R mysql.mysql /opt/mysql/data [root@node full]# ls -l /opt/mysql-5.6/data/ total 286744 -rw-r----- 1 mysql mysql 12582912 Dec 11 17:14 ibdata1 -rw-r----- 1 mysql mysql 134217728 Dec 11 17:14 ib_logfile0 -rw-r----- 1 mysql mysql 134217728 Dec 11 17:14 ib_logfile1 -rw-r----- 1 mysql mysql 12582912 Dec 11 17:14 ibtmp1 drwxr-x--- 2 mysql mysql 4096 Dec 11 17:14 mysql -rw-rw---- 1 mysql mysql 0 Dec 11 17:19 mysql-bin.index drwxr-x--- 2 mysql mysql 4096 Dec 11 17:14 performance_schema -rw-r----- 1 mysql mysql 21 Dec 11 17:14 xtrabackup_binlog_pos_innodb -rw-r----- 1 mysql mysql 589 Dec 11 17:14 xtrabackup_info -rw-r----- 1 mysql mysql 1 Dec 11 17:14 xtrabackup_master_key_id drwxr-x--- 2 mysql mysql 4096 Dec 11 17:14 xtra_test [root@node full]# /etc/init.d/mysqld start Starting MySQL. [ OK ] [root@node full]# ps aux|grep mysql root 21533 0.6 0.1 113324 3208 pts/2 S 17:19 0:00 /bin/sh /opt/mysql/bin/mysqld_safe --datadir=/opt/mysql/data --pid-file=/opt/mysql/mysqld.pid mysql 22340 10.4 44.2 2299484 903940 pts/2 Sl 17:19 0:00 /opt/mysql/bin/mysqld --basedir=/opt/mysql --datadir=/opt/mysql/data --plugin-dir=/opt/mysql/lib/plugin --user=mysql --log-error=/opt/mysql/error.log --open-files-limit=4161 --pid-file=/opt/mysql/mysqld.pid --socket=/tmp/mysql.sock --port=3306 root 22369 0.0 0.1 112720 2400 pts/2 S+ 17:19 0:00 grep --color=auto mysql [root@node full]# netstat -lntup | grep mysql tcp6 0 0 :::3306 :::* LISTEN 22340/mysqld
第十步 驗證數據
[root@node full]# mysql -uroot -p234567 Warning: Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.6.39-log MySQL Community Server (GPL) Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | xtra_test | +--------------------+ 4 rows in set (0.00 sec) mysql> use xtra_test; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> show tables; +---------------------+ | Tables_in_xtra_test | +---------------------+ | friends | +---------------------+ 1 row in set (0.00 sec) mysql> select * from friends; +----+---------+ | id | name | +----+---------+ | 1 | jack | | 1 | tom | | 2 | winstom | | 3 | tracey | +----+---------+ 4 rows in set (0.00 sec)
上面的驗證操做能夠看出，備份已經徹底恢復