LVS-持久连接-实践

LVS-学习目录

1、什么是持久化连接

lvs persistence 持久连接 ，无论使用任何调度算法，在一段时间内（默认300s），能够实现将来自同一个地址的请求始终发往同一个 RS

2、持久化连接配置

2.1、查询当前的规则

lvs ~]# ipvsadm -L -n
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.87.200:80 rr
  -> 192.168.87.129:80            Route   1      0          0         
  -> 192.168.87.130:80            Route   1      0          0 

2.2、编辑当前集群持久化连接

2.2.1、编辑【-p 30】

ipvsadm -E -t 192.168.87.200:80 -p 30

# 持久化30分钟

2.2.2、查询当前的规则

lvs ~]# ipvsadm -L -n
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.87.200:80 wlc persistent 30
  -> 192.168.87.129:80            Route   1      0          0         
  -> 192.168.87.130:80            Route   1      0          0  

3、访问测试

3.1、客户端访问

[root@route ~]# curl 192.168.87.200
rs-02
[root@route ~]# curl 192.168.87.200
rs-02
[root@route ~]# curl 192.168.87.200
rs-02
[root@route ~]# curl 192.168.87.200
rs-02
[root@route ~]# curl 192.168.87.200
rs-02

# 都是相同的rs节点的

3.2、查询持久化时效

lvs ~]# ipvsadm -L -n -c
IPVS connection entries
pro expire state       source             virtual            destination
TCP 00:47  NONE        192.168.87.132:0   192.168.87.200:80  192.168.87.130:80
TCP 01:17  FIN_WAIT    192.168.87.132:60722 192.168.87.200:80  192.168.87.130:80