七、高可用配置

1、安装Keepalived

编译安装

下载地址

https://www.keepalived.org/download.html#

使用 ./configure 编译安装

如遇报错提示

configure: error:
  !!! OpenSSL is not properly installed on your system. !!!
  !!! Can not include OpenSSL headers files.            !!!

安装依赖

yum install openssl-devel

yum安装

yum install keepalived

2、配置

使用yum安装后配置文件在

/etc/keepalived/keepalived.conf

最小配置

第一台机器

! Configuration File for keepalived
global_defs {
   router_id lb111
}
vrrp_instance xx {
    state MASTER
    interface ens33
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.44.200
	} 
}

第二台机器

! Configuration File for keepalived

global_defs {
   router_id lb110
}
vrrp_instance xx {
    state BACKUP
    interface ens33
    virtual_router_id 51
    priority 50
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.44.200
} }

启动服务

systemctl start keepalived