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  • MySQL主从同步最佳实践

    #!/bin/bash
    export master_ip=192.168.7.206
    export slave_ip=192.168.7.207
    export root_passwd=123456
     
    echo '#1.取master主机ip的后三位作为master的server_id'
    export master_server_id=`echo $master_ip |awk -F . '{print $4}'`
     
    echo '#2.取slave主机ip的后三位作为slave的server_id'
    export slave_server_id=`echo $slave_ip |awk -F . '{print $4}'`
     
    echo '#3.取出master主库的postion'
    postion_num=$(ssh -Tq $master_ip <<eof
    mysql -uroot   -e 'show master statusG' 2>/dev/null|grep Position |cut -f2 -d :
    --#mysql -uroot -p123456  -h$master_ip  -e 'show master statusG' 2>/dev/null|grep Position |cut -f2 -d :
    eof
    )
     
    echo '#4.取出master主库的log_name'
    log_name=$(ssh -Tq $master_ip <<eof
    mysql -uroot -p123456  -e 'show master statusG' 2>/dev/null|grep File |cut -f2 -d :
    eof
    )
     
    echo '#5.事先修改master主库的server_id'
    echo $master_server_id
    #ssh  ${master_ip} <<EOF
    mysql -uroot -h$master_ip  <<eof
    --#set global server_id=echo $master_ip | cut -b 11,12,13
    set global server_id=$master_server_id;
    eof
    service mysql restart
     
    echo '#6.事先修改slave从库的server_id'
    echo $slave_server_id
    mysql -uroot -h$slave_ip  <<eof
    set global server_id=$slave_server_id;
    eof
     
    echo '#7.slave库设置密码和配置'
    #ssh -Tq `${slave_ip}` <<EOF
    mysql -uroot -h192.168.7.207  <<eof
    use mysql;
    stop slave;
    select sysdate();
    flush privileges;
    #set password = password("${root_passwd}");
    GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '${root_passwd}';
    GRANT ALL PRIVILEGES ON *.* TO 'root'@localhost IDENTIFIED BY '${root_passwd}';
    --#change master to master_host='192.168.7.206',master_port=3309,master_user='root',master_password='123456', master_log_file='bin.000017',master_log_pos=8888;
    --#change master to master_host='192.168.7.206',master_port=3309,master_user='root',master_password='123456', master_log_file='${log_name}',master_log_pos=${postion_num};
    flush privileges;
    eof
     
    echo '#8.slave库做chang master 操作'
    ssh -Tq $master_ip <<EOF
    service mysql restart
    EOF
     
    ssh -Tq $slave_ip <<EOF
    service mysql restart
    EOF
     
    export master_ip=192.168.7.206
    export slave_ip=192.168.7.207
     
    echo '#3.取出master主库的postion'
    postion_num=$(ssh -Tq $master_ip <<eof
    --#mysql -uroot   -e 'show master statusG' 2>/dev/null|grep Position |cut -f2 -d :
    mysql -uroot -p123456  -h$master_ip  -e 'show master statusG' 2>/dev/null|grep Position |cut -f2 -d :
    eof
    )
     
    echo '#4.取出master主库的log_name'
    log_name=$(ssh -Tq $master_ip <<eof
    mysql -uroot -p123456  -e 'show master statusG' 2>/dev/null|grep File |cut -f2 -d :
    eof
    )
    echo $postion_num
    echo $log_name
    mysql -uroot -h192.168.7.207  <<eof
     
    --#change master to master_host='192.168.7.206',master_port=3309,master_user='root',master_password='123456', master_log_file='bin.000017',master_log_pos=8888;
    change master to master_host='${master_ip}',master_port=3309,master_user='root',master_password='123456',master_log_file='${log_name}',master_log_pos=${postion_num};;
     
     
    start slave;
    select sysdate();
    eof
    exit;
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  • 原文地址:https://www.cnblogs.com/iyoume2008/p/9724322.html
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