Keepalive 双主搭建配置

keepalived保证双主数据库的可用性

环境说明

192.168.1.10  keepalive 主1

192.168.1.20  keepalive 主2

192.168.1.111  keepalive 主1  从2 VIP

192.168.1.222  keepalive 从1  主2 VIP

1、官网下载最新版本

keepalived-1.2.19

2、部署安装

yum install gcc gcc-c++ make openssl openssl-develtar zxvf keepalived-1.2.19.tar.gzcd keepalived-1.2.19./configure --sysconf=/etc/ --with-kernel-dir=/usr/src/linux --prefix=/usr/local/keepalivedmake ; make installcp /usr/local/keepalive/sbin/keepalived /usr/bin/cp /usr/local/keepalived/sbin/keepalived /usr/bin/cp /usr/local/keepalived/etc/sysconfig/keepalived  /etc/sysconfig/cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/chkconfig keepalived on

3、建立配置文件

vim /etc/keepalived/keepalived.confglobal_defs {   notification_email {     cwliu@atman.com   }   notification_email_from root@localhost   smtp_server 127.0.0.1   smtp_connect_timeout 30       router_id Mariadb_keepalive1}vrrp_script notification {   script "/data/ops/script/mail.sh"   interval 1   weight 2   }vrrp_script check_alive {   script "/data/ops/script/mysql_check.sh"   interval 1   weight 2   }vrrp_instance Mariadb_keepalive_channel1 {    state MASTER    interface eth0    virtual_router_id 100    priority 200    advert_int 1    authentication {     auth_type PASS     auth_pass 1111    }    virtual_ipaddress {        192.168.1.111    }    track_script {check_alive    }}vrrp_instance Mariadb_keepalive_channel2 {    state BACKUP    interface eth0    virtual_router_id 101    priority 100    advert_int 1    authentication {        auth_type PASS        auth_pass 1111    }    virtual_ipaddress {        192.168.1.222    }    track_script {check_alive    }}

4、然后启动即可

/etc/init.d/keepalived start

5、Keepalive 另一主服务器除配置文件不一样，其他配置步骤如上，配置文件如下

vim /etc/keepalived/keepalived.confglobal_defs {   notification_email {     cwliu@atman.com   }   notification_email_from root@localhost   smtp_server 127.0.0.1   smtp_connect_timeout 30       router_id Mariadb_keepalive}vrrp_script notification {   script "/data/ops/script/mail.sh"   interval 1   weight 2}vrrp_script check_alive {   script "/data/ops/script/mysql_check.sh"   interval 1   weight 2}vrrp_instance Mariadb_keepalive_channel1 {    state BACKUP    interface eth0    virtual_router_id 100    priority 100    advert_int 1    authentication {     auth_type PASS     auth_pass 1111    }    virtual_ipaddress {        192.168.1.111    }    track_script {check_alive    }}vrrp_instance Mariadb_keepalive_channel2 {    state MASTER    interface eth0    virtual_router_id 101    priority 200    advert_int 1    authentication {        auth_type PASS        auth_pass 1111    }    virtual_ipaddress {        192.168.1.222    }    track_script {check_alive    }}

6、效果图

两台同时运行：

192.168.1.10：

192.168.1.20

192.168.1.10 keepalive 关闭后：