keepalived的主要作用体现在处理单点故障,像前面我们设置的两台主机,就可以进行故障演练,现在的状态是master主机开启着keepalived:
keepalived(4)——演练故障出现时keepalived的状态
keepalived(4)——演练故障出现时keepalived的状态
接下来关闭master上的keepalived:
master上的已经关闭,并且查看ip addr:
keepalived(4)——演练故障出现时keepalived的状态
keepalived(4)——演练故障出现时keepalived的状态
发现已经移除。
反观backup:
keepalived(4)——演练故障出现时keepalived的状态
可以看见把vip端口转移到了slave主机上,查看ip addr看到vip已经设置好:
keepalived(4)——演练故障出现时keepalived的状态
这时候访问vipkeepalived(4)——演练故障出现时keepalived的状态
访问正常。
再次开启以后,master恢复服务,slave转成backup模式:
keepalived(4)——演练故障出现时keepalived的状态
keepalived(4)——演练故障出现时keepalived的状态

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