mysql5.6主主集群自動同步腳本
在
mysql主主集群中有機器關機等情況導致同步失效，自己寫了一個shell腳本，以方便自己以后維護：
腳本內容如下：
#!/bin/bash
#設置主節(jié)點、從節(jié)點IP和mysql數據庫管理員用戶名密碼信息 同步用戶名密碼信息
_MASTERHOST=192.168.1.207
_SLAVEHOST=192.168.1.208
_USER=root
_MASTERPASD=root
_SLAVEPASD=root
_TBUSER=ab
_TBPASD=123
#配置從到主的同步
mysql -h $_MASTERHOST -uroot -p$_MASTERPASD -e "flush tables with read lock;"
master_log_file=`mysql -u root -h $_MASTERHOST -p$_MASTERPASD -e "show master status;" | awk 'NR==2 {print $1}'`
master_log_position=`mysql -u root -h $_MASTERHOST -p$_MASTERPASD -e "show master status;" | awk 'NR==2 {print $2}'`
mysql -h $_MASTERHOST -uroot -p$_MASTERPASD -e "unlock tables;"
mysql -h $_SLAVEHOST -uroot -p$_SLAVEPASD -e "stop slave;"
mysql -h $_SLAVEHOST -uroot -p$_SLAVEPASD -e "CHANGE MASTER TO MASTER_HOST='$_MASTERHOST',MASTER_PORT=3306,MASTER_USER='$_TBUSER',MASTER_PASSWORD='$_TBPASD',MASTER_LOG_FILE='$master_log_file',MASTER_LOG_POS=$master_log_position;"
mysql -h $_SLAVEHOST -uroot -p$_SLAVEPASD -e "start slave;"
#配置
主到
從的同步
mysql -h $_SLAVEHOST -uroot -p$_SLAVEPASD -e "flush tables with read lock;"
slave_log_file=`mysql -u root -h $_SLAVEHOST -p$_SLAVEPASD -e "show master status;" | awk 'NR==2 {print $1}'`
slave_log_position=`mysql -u root -h $_SLAVEHOST -p$_SLAVEPASD -e "show master status;" | awk 'NR==2 {print $2}'`
mysql -h $_SLAVEHOST -uroot -p$_SLAVEPASD -e "unlock tables;"
mysql -h $_MASTERHOST -uroot -p$_MASTERPASD -e "stop slave;"
mysql -h $_MASTERHOST -uroot -p$_MASTERPASD -e "CHANGE MASTER TO MASTER_HOST='$_SLAVEHOST',MASTER_PORT=3306,MASTER_USER='$_TBUSER',MASTER_PASSWORD='$_TBPASD',MASTER_LOG_FILE='$slave_log_file',MASTER_LOG_POS=$slave_log_position;"
mysql -h $_MASTERHOST -uroot -p$_MASTERPASD -e "start slave;"
#檢查
mysql -h $_MASTERHOST -uroot -p$_MASTERPASD -e "show slave status\G;" | awk '$0 ~/Host/ || $0 ~/State/ || $0 ~/Running/'
mysql -h $_SLAVEHOST -uroot -p$_SLAVEPASD -e "show slave status\G;" | awk '$0 ~/Host/ || $0 ~/State/ || $0 ~/Running/'
