Nginx+keepalived(高可用双主模式)
tips：前面已经介绍了nginx+keepalived高可用主从模式，今天补充下高可用的双主模式，均可以作为主机使用
server1：192.168.237.128 VIP1：192.168.237.10
server2：192.168.237.129 VIP2：192.168.237.20
vim /etc/keepalived/keepalived.conf //编辑配置文件，增加一段新的vrrp_instance 规则
keepalivedA配置文件新增如下：
vrrp_instance VI_2 {
state BACKUP #备机
interface eth0 #网卡名称
virtual_router_id 52 #路由ID
priority 100 #优先级
authentication {
auth_type PASS
auth_pass 2222 #########
}
virtual_ipaddress {
192.168.237.20 #######VIP2
}
track_script {
chk_nginx
}
}
keepalivedB配置文件新增如下：
vrrp_instance VI_2 {
state MASTER #主机
interface eth0 #网卡名称
virtual_router_id 52 #路由ID
priority 110 #优先级
authentication {
auth_type PASS
auth_pass 2222 #########
}
virtual_ipaddress {
192.168.237.20 #######VIP2
}
track_script {
chk_nginx
}
}
分别启动 keepalivedA 和keepalivedB，查看绑定VIP情况
停止keepalivedA service keepalived stop ，KeepalivedB接替keepalivedA工作，查看B机器ip绑定情况，访问192.168.273.10正常运行
重启keepalivedA，keepalivedA恢复工作，重新绑定VIP1,keepalivedB移除VIP1，继续监听
同上，停止keepalivedB，查看keepalivedA绑定VIP情况