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HomeDatabaseMysql Tutorial集群之Mysql主从与环形详细配置步骤(4)(已重新整理)_MySQL

Mysql集群

  /****  *  *    *修改每台MYSQL服务器的配置文件 my.cnf(windows下是my.ini)   * 1.首先开启每台服务器的Bin日志(必须的)  *  指令:log-bin=mysql-bin   * 2.给每一个服务器以个Id,多台服务器的Id不能重复,要求是唯一的 只要不相同就行  * 指令: server-id = 1        *3. 下面指令是只有在环形结构时候才需要加下面项,主从的时候不需要加  *指令:log-slave-updates = true   * 这里图列解释一下,方便同志们理解

集群之Mysql主从与环形详细配置步骤(4)(已重新整理)_MySQL

     4.关于账号的建立  *  4.1如果主从是(主从)的话那么要在主服务器创建一个账号  SLAVE  *  4.2如果是(环形)的话,那么在每台服务器上都创建一个账号 SLAVE  *  这个账号就专门用来做复制用的        4.3  创建语法:  *  语法:GRANT REPLICATION SLAVE ON *.* TO 'username'@'%' IDENTIFIED BY 'password';     username : 是账号名     password : 是密码

  * GRANT REPLICATION SLAVE 意思是分配一个复制的权限  给 SLAVE       ON  *.*的意思是  第一个*可为哪个一个数据库(可根据实际情况填写), 第二个*这个数据库的那张表(可根据实际情况填写)    如果直接  ON *.*那表示为,所有的数据库的所有表,说白通配符嘛 ,表示我可以复制所有的数据库的所有表        TO   意思是 username用户名(根据实际情况填写)     %可以这样填写,  ;表示限定到具体的 比如只有192.x.x.xxIP地址才能对复制操作    用来限制那台服务器能进行复制   %就表示所有人能复制    IDENTIFIED BY 'password';密码s      5.在服务器上的信息(查看主的) (环形都弄)  FLUSH TABLES WITH READ LOCK;   // 意思是,我在复制的时候进行锁表,  保证当前只有我自己一个操作,上线项目建议用上  show master status;  //查看状态

  --------------------------------------------------------

  File                     Psition    binlog_do_Db    Bnlog_IGNOre_db

 mysq-bin.0000.1           251

 --------------------------------------------------------

 记录下期中的File 和 Psition

6. 主从:从服务器上设置主服务器的IP地址等信息     环形:说白了,环形链表嘛 一个接着一个,这个没必要详细了嘛,如果还不明白就看我上面的图

  CHANGE  MASTER  TO

    MASTER_HOST='xx.xx.xx.xx'   # 主服务器ip   /环形的就是你上一个的

    MASTER_USER='账名',            # 主服务器上slave账户名  / 环形的就是你上一个的

    MASTER_PASSWORD='密码',    # 主服务器上slave 密码/  环形的就是你上一个的

   MASTER_LOG_FILE='mysql-bin.000001',   # 主服务器上记录的file /  环形的就是你上一个的

    MASTER_LOG_POS=251;                 # 主服务器上记录的Position  /环形的就是你上一个的

7. 启动slave    start   slave

8.主从同步检查 /环形同理 mysql> show slave status/G

Slave_IO_Running :yesSlave_SQL_Running:yes   哥们恭喜你成功了

9.自动删除binlog设置自动清理MySQL binlog日志,expire_logs_days = 10
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