记录mysql主主配置_MySQL

记录mysql主主配置

1.首先添加replication mysql账户：

GRANT REPLICATION SLAVE,REPLICATION CLIENT,RELOAD,SUPER ON *.* TO
'replicate'@'10.10.1.69' IDENTIFIED BY 'softc123';

flush privileges;

2. cp /usr/share/mysql/my-medium.cnf /etc/my.cnf

3.修改my.cnf配置文件，配置mysql replication

server-id=2

master-connect-retry=60

replicate-do-db=testdb

replicate-ignore-db=mysql

log_slave_updates=1

read_only=1

relay_log=mysql-relay-bin

sync_binlog=1

auto-increment-increment = 2

auto-increment-offset = 1（id自增设置，再另外一个mysql 设置为2）

使用命令修改master 配置

CHANGE MASTER TO MASTER_HOST='10.10.1.69',MASTER_USER='replicate',MASTER_PASSWORD='softc123',
MASTER_LOG_FILE='mysql-bin.000005',MASTER_LOG_POS=0;

（mysql 5.5以前可以把MASTER_HOST这些信息写入配置文件，不推荐这样做，不利于维护）

4.连接主机

slave start;

--查看从机状态

show slave status/G;

show master status;

5.监控

参照网上写了一个简单的监控shell 脚本，用linux crontab定时检测

#!/bin/sh

/usr/bin/mysql -uroot -p123456 -h127.0.0.1 -e "slave start;"

NUM=($(/usr/bin/mysql -uroot -p123456 -h127.0.0.1 -e "show slave status/G"|grep -ie
Running|grep Yes|wc -l))

if [ "$NUM" -eq "2" ] ; then

echo "slave start sucessfull...."

else

echo "slave start fail...."

echo "replication test" | mail -s "linux shell email subject" xxx@xxxx.com

#发送邮件到邮箱

exit

fi

echo $NUM