MySQL+keeplived高可用配置

MySQL高可用
基础环境:
基于MySQL互为主从(双主、主主),请现配置

 主备两台机器 

主的操作
1.在keepalived主服务器上安装keepalived

yum -y install keepalived

2.编辑配置文件

vim  /etc/keepalived/keepalived.conf

内容更改如下:
vrrp_instance VI_1 {
    state MASTER            \\初始状态:MASTER/BACKUP
    interface eth0            \\生成VIP的网卡设备
    virtual_router_id 51    \\广播的路由ID
    priority 100            \\优先级
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.189.181        \\VIP地址
    }
}

virtual_server 192.168.189.181 3306 {    \\虚拟机服务器
    delay_loop 6
    nat_mask 255.255.255.0
    protocol TCP

    real_server 192.168.189.120 3306 {    \\真实服务器
        weight 1
        notify_down  /root/kill.sh        \\当检测的真实服务器器3306端口不可用时,要执行的脚本
        TCP_CHECK {
            connect_timeout 3
            connect_port 3306            \\检测的端口
            nb_get_retry 3
            delay_before_retry 3
        }
    }
}

3. 生成停止mysql的脚本

   vim /root/kill.sh
        内容:
        #!/bin/bash
        service keepalived stop

4.脚本保存退出后重启keepalived

   service  keepalived   restart

5.查看VIP是否生成

   ip a

备份主机的操作
操作和主基本一致,需要更改的有:初始状态、优先级、真实服务器ip地址

1.复制主的keepalived的配置文件到服务器

scp 192.168.189.129:/etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf 

2.编辑配置文件

vim /etc/keepalived/keepalived.conf

注意如下配置:

state BACKUP
interface eth0
priority 90
real_server 192.168.189.130 3306

3. 生成停止mysql的脚本

   vim /root/kill.sh
        内容:
        #!/bin/bash
        service keepalived stop

4.更改完毕后重启keepalived

service keepalived restart

测试

停止主的mysql查看 VIP是否漂移到备份主机上,如成功飘逸则是配置成功

posted @ 2019-12-19 11:50  Security  阅读(377)  评论(0编辑  收藏  举报