MySQL 5.5 主主复制创建过程是怎样的
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MySQL 5.5 主主复制搭建过程是怎样的，相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。 --节点1 IP 192.168.78.141 PORT 3306 --节点2 IP 192.168.78.137 PORT 5505 --配置节点1到节点2的复制 --编辑节点1的配置文件 [root@localhost install]# vim /etc/my.cnf # Log server-id = 100 log-bin = /log/binlog/mysql-bin --在节点2安装好MySQL软件，安装流程可以参考源码安装文章 http://blog.itpub.net/26506993/viewspace-2072859/ --在节点1，使用Xtrabackup创建完整备份 关于Xtrabackup，可参考 http://blog.itpub.net/26506993/viewspace-2087734/ http://blog.itpub.net/26506993/viewspace-2088737/ [root@localhost backup]# /install/percona/percona-xtrabackup-2.4.2-Linux-x86_64/bin/innobackupex --defaults-file=/etc/my.cnf --stream=tar /tmp --user system --password 'Mysql#2015' | gzip -> /backup/xtra/xtra_fullbackup_20160501.tar.gz --拷贝备份到节点2 [root@localhost backup]# scp /backup/xtra/xtra_fullbackup_20160501.tar.gz root@192.168.78.137:/backup/20160501 解压备份到数据文件目录 [root@localhost 5505]# tar xivfz xtra_fullbackup_20160501.tar.gz -C /mysql_data/5505 在节点2上面需要安装Xtraback --使用Xtrabackup准备数据、应用日志，使数据文件达到一致性的状态 [root@localhost bin]# ./innobackupex --defaults-file=/mysql_data/cnf/my.cnf --apply-log /mysql_data/5505 ..... InnoDB: Doing recovery: scanned up to log sequence number 68405269 (0%) InnoDB: Doing recovery: scanned up to log sequence number 68405269 (0%) InnoDB: Database was not shutdown normally! InnoDB: Starting crash recovery. InnoDB: xtrabackup: Last MySQL binlog file position 414, file name /log/binlog/mysql-bin.000012 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: 5.7.11 started; log sequence number 68405269 xtrabackup: starting shutdown with innodb_fast_shutdown = 1 InnoDB: FTS optimize thread exiting. InnoDB: Starting shutdown... InnoDB: Shutdown completed; log sequence number 68405621 160430 23:51:25 completed OK! --在节点1数据库上面创建复制专用账户 mysql> grant replication slave on *.* to 'repl'@'192.168.78.%' identified by 'Mysql#2015'; Query OK, 0 rows affected (0.04 sec) --配置节点2的配置文件 [root@localhost 5505]# vim /mysql_data/cnf/my.cnf # Log server-id = 200 log-bin = /mysql_log/binlog/mysql-bin relay-log = /mysql_log/binlog/product-relay-bin relay-log-index = /mysql_log/binlog/product-relay-index binlog_cache_size = 32M max_binlog_cache_size = 512M max_binlog_size = 512M binlog_format = MIXED --启动节点2的Mysql服务 [root@localhost bin]# /data/bin/mysqld_safe --defaults-file=/mysql_data/cnf/my.cnf & --配置Slave节点复制环境 查询Slave节点连接Master节点的二进制文件和位置 使用Xtrabackup备份时，在xtrabackup_binlog_info文件中会保存这部分信息 [root@localhost 5505]# more xtrabackup_binlog_info mysql-bin.000012 414 --在节点2执行CHANGE MASTER语句 mysql> change master to -> master_host='192.168.78.141', -> master_port=3306, -> master_user='repl', -> master_password='Mysql#2015', -> master_log_file='mysql-bin.000012', -> master_log_pos=414; Query OK, 0 rows affected (0.13 sec) --启动应用线程 mysql> start slave; --查看同步状态 mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.78.141 Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000013 Read_Master_Log_Pos: 341 Relay_Log_File: product-relay-bin.000003 Relay_Log_Pos: 487 Relay_Master_Log_File: mysql-bin.000013 Slave_IO_Running: Yes Slave_SQL_Running: Yes --搭建节点2到节点1的复制 --在节店1的配置文件中，增加中继日志的设置 [root@localhost log]# vim /etc/my.cnf relay-log = /log/binlog/product-relay-bin relay-log-index = /log/binlog/product-relay-index --重启节点1的数据库 [root@localhost tmp]# /software/bin/mysqladmin -usystem -p'system' shutdown 160512 02:47:54 mysqld_safe mysqld from pid file /var/run/mysqld/mysqld.pid ended [1]+ Done /software/bin/mysqld_safe --defaults-file=/etc/my.cnf (wd: ~) (wd now: /tmp) [root@localhost tmp]# /software/bin/mysqld_safe --defaults-file=/etc/my.cnf & [1] 40246 [root@localhost tmp]# 160512 02:48:13 mysqld_safe Logging to '/log/err.log'. 160512 02:48:13 mysqld_safe Starting mysqld daemon with databases from /data mysql> show variables like 'relay_log%'; +-----------------------+---------------------------------+ | Variable_name | Value | +-----------------------+---------------------------------+ | relay_log | /log/binlog/product-relay-bin | | relay_log_index | /log/binlog/product-relay-index | | relay_log_info_file | relay-log.info | | relay_log_purge | ON | | relay_log_recovery | OFF | | relay_log_space_limit | 0 | +-----------------------+---------------------------------+ 6 rows in set (0.00 sec) --在节点1上面增加全局只读锁，如果应用只连接到一个节点，如节点1，这一步可以忽略 mysql> flush tables with read lock; Query OK, 0 rows affected (0.00 sec) --查看节点2当前的日志名称和位置，用于下面在节点1的change master to命令 mysql> show master status; +------------------+----------+--------------+------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | +------------------+----------+--------------+------------------+ | mysql-bin.000006 | 14078491 | | | +------------------+----------+--------------+------------------+ 1 row in set (0.00 sec) --在节点1执行CHANGE MASTER语句 mysql> change master to -> master_host='192.168.78.137', -> master_port=5505, -> master_user='repl', -> master_password='Mysql#2015', -> master_log_file='mysql-bin.000006', -> master_log_pos=14078491; Query OK, 0 rows affected (0.13 sec) --启动应用线程 mysql> start slave; --节点1释放全局只读锁 mysql> unlock tables; Query OK, 0 rows affected (0.00 sec) --查看同步状态 mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.78.137 Master_User: repl Master_Port: 5505 Connect_Retry: 60 Master_Log_File: mysql-bin.000006 Read_Master_Log_Pos: 14078491 Relay_Log_File: product-relay-bin.000002 Relay_Log_Pos: 253 Relay_Master_Log_File: mysql-bin.000006 Slave_IO_Running: Yes Slave_SQL_Running: Yes 在两个节点的配置文件中增加序列的相关参数，以避免生成的序列相同而产生冲突 --节点1 节点1上序列从1开始，增长值为2，即为奇数，如1、3、5 ## set this to server-id value auto_increment_offset = 1 ## set this to the number of mysql servers auto_increment_increment = 2 --节点2 节点2上序列从2开始，增长值为2，即为奇数，如2、4、6 ## set this to server-id value auto_increment_offset = 2 ## set this to the number of mysql servers auto_increment_increment = 2 看完上述内容，你们掌握MySQL 5.5 主主复制搭建过程是怎样的的方法了吗？ （编辑：银川站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
