Linux利用keepalived实现lvs的高可用性的操作方法

让10.0.0.100的ip优先分配至192.168.234.47 192.168.234.57备用

让10.0.0.200的ip优先分配至192.168.234.57 192.168.234.47备用

后端real_server准备

修改192.168.234.57的vip为10.0.0.200/32

[root@234c27 keepalived]# ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 10.0.0.100:80 wrr -> 192.168.234.47:80 Route 1 0 0 TCP 10.0.0.200:80 wrr -> 192.168.234.57:80 Route 1 0 0

现在宕掉一个lvs

[root@234c27 keepalived]# systemctl stop keepalived.service [root@234c27 keepalived]# ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn

依然提供服务

[root@234c37 ~]# ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 10.0.0.100:80 wrr -> 192.168.234.47:80 Route 1 0 21 TCP 10.0.0.200:80 wrr -> 192.168.234.57:80 Route 1 0 39

后一个实现基于前一个的基础上修改来的

假设要实现sorry_server

1.把rs服务都停掉。然后在lvs上安装apache或者nginx服务

2.将keepalived配置文件中的

virtual_server 10.0.0.200 80 { delay_loop 6 lb_algo wrr lb_kind DR #persistence_timeout 50 protocol TCP #sorry_server 127.0.0.1:80 //这一行来修改 写出服务出错之后的页面 real_server 192.168.234.57 80 { weight 1 HTTP_GET { url { path / status_code 200 } connect_timeout 3 nb_get_retry 3 delay_before_retry 3 } } }

您可能感兴趣的文章:

LVS+Keepalived构建高可用负载均衡(测试篇)LVS+Keepalived构建高可用负载均衡配置方法(配置篇)Linux下的高可用性方案研究