搭建keepalived+LVS+nginx高可用集群负载均衡

1. 在LVS服务器上安装Keepalived，参考（https://www.cnblogs.com/xiaodunan/p/17374699.html）
2. 修改核心配置文件

cd /etc/keepalived/
vim keepalived.conf

global_defs {
   router_id LVS_1
}
vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 41 
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    } 
    virtual_ipaddress { 
        192.168.206.100
    }
}