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搭建mysql主从集群的步骤_MySQL

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Jun 01, 2016 pm 01:04 PM

stepcluster

前提条件是：需要在linux上安装4个mysql数据库,都需要配置完相应的信息。需要搭建： mysql 01：主数据库 master mysql 02 : 从数据库 slave01 mysql 03 : 从数据库 slave02 mysql 04 : 从数据库 slave03 第一步：在主服务器上的my.cnf 上编辑二进制文件格式：log-bin=mysql-bin; 二进制的格式： binlog-format=mixed 第二步：在从服务器上：有几台从服务器都需要配置：二进制的日志：每台从服务器在 my.cnf 中配置二进制日志： relay-log=mysql-relay 注释：在每台从数据库上的my.cnf上都需要配置第三步：在主服务器上配置server-id　这个每台的server-id是唯一的，不能重复。一般是每台主机的ip地址后面的数量主： server-id=166 从： server-id=167 ，server-id=168 ，server-id=169，第四步：如果出现了连接不上数据库的问题：可以使用以下命令： /usr/libexec/mysqlld --skip-grant-tables 分别登录到mysql数据库中。 ./mysql -h 192.168.1.166 -uroot -p -P 3306(端口号) 第五步：进入主数据库界面：进行授权，建立一个账号，共从数据库去连接使用，在主数据库界面： mysql> grant replication client,repliaction slave on *.* to 'xxxx'@'192.168.%.%' identified by 'xxxxx' 分析下这个授权账号：首先授权应用给从数据库，建立一个账号给从数据库去连接，需要设置用户名，密码，还有ip 授权往后，需要在主数据库上查看主数据库的状态： mysql> show master status; 第六步：在从数据库上去连接主数据库的建立的账号：进入每个从数据库界面： mysql> change master to master_host = '192.xxxx.xxx.xxx', master_port = '3306', master_user = 'xxxxx', master_password = 'xxxxxxx', master_log_file = 'msyql-bin.000001', master_log_pos = 975; master_log_file 和 master_log_pos 需要根据在主数据库上查看的状态去改变。
运行上面的命令后，然后执行查看从数据的状态： mysql> show slave status \G; 可以看到连接的详细信息：如果不行，可以 mysql> reset slave; mysql> stop slavw; 然后继续运行刚才的链接信息。第七步：检测刚才搭建的集群主从数据库时候可以，在桌面的客户端上去测试，在主数据库上建立一个测试数据库，在里面插入测试数据库，看下搭建的从数据库是否显示在主数据库上的测试库。如果有，就顺利的搭建完主从数据库的集群。

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