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Mysql主从搭建及Mysql运维相关命令_MySQL

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Release: 2016-06-01 13:32:37
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Mysql主从搭建及Mysql运维相关命令

 

1,安装mysql,方式很多,rpm方式安装

yum -y install mysql-server mysql-devel mysql  mysql-bench mysql-test

2 ,启动

    /etc/init.d/mysqld start

3,master

编辑/etc/my.cnf

# 确保有如下行

server-id = 1

log-bin=mysql-bin

binlog-do-db=mysql #需要备份的数据库名,如果备份多个数据库,重复设置这个选项即可

binlog-ignore-db=mysql #不需要备份的数据库名,如果备份多个数据库,重复设置这个选项即可

log-slave-updates #这个参数一定要加上,否则不会给更新的记录些到二进制文件里

slave-skip-errors #是跳过错误,继续执行复制操作

 

linux: useradd repl_user

        passwd repl_user

mysql> grant replication slave on  *.*  'repl_user'@'slave_ip' identified by 'repl_password';

备份

         FLUSH TABLES WITH READ LOCK;

        reset master

不要退出终端,再开启一个终端

linux :cd /var/lib  #mysql数据目录

        tar zcvf mysql.tar.gz mysql

        scp mysql.tar.gz root@slave_ip :/var/lib

 

mysl>unlock  tables;

   SHOW MASTER STATUS;

 

4,salve

 

tar zxvf mysql.tar.gz

chown -R mysql:mysql mysql

编辑 /etc/my.cnf

server-id=2

log-bin=mysql-bin

master-host=192.168.0.1

master-user=slave

master-password=111111

master-port=3306

replicate-do-db=test #需要备份的数据库名

replicate-ignore-db=mysql #忽略的数据库

master-connect-retry=60 #如果从服务器发现主服务器断掉,重新连接的时间差(秒)

log-slave-updates #这个参数一定要加上,否则不会给更新的记录些到二进制文件里

slave-skip-errors #是跳过错误,继续执行复制操作

 

验证连接MASTER

# mysql -h192.168.0.1 -uslave -ppassword

mysql> show grants for slave@192.168.0.2;

在SLAVE上设置同步

设置连接MASTER MASTER_LOG_FILE为主库的File,MASTER_LOG_POS为主库的Position

mysql> slave stop;

mysql> CHANGE MASTER TO MASTER_HOST='192.168.0.1',MASTER_USER='slave',MASTER_PASSWORD='111111',MASTER_LOG_FILE='mysql-bin.000001',MASTER_LOG_POS=106;

启动SLAVE服务

mysql> slave stop;

mysql> slave start;

查看SLAVE状态

mysql> SHOW SLAVE STATUS/G;

其中 Slave_IO_Running 和 Slave_SQL_Running 两列的值都为 "Yes",表明 Slave 的 I/O 和 SQL 线程都在正常运行。

 

mysql运维常用命令:

show processlist

show full processlist

show open tables;

show status;

show variables

show engine innodb status;/G;

linux 命令行连接数据库执行命令

printf "SELECT SYSTEM_USER() from DUAL"|mysql -h192.1.1.161 -uroot -proot -P3306  test -N

 

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