LVS Automatically Isolating Faulty Backend Nodes

Objectives

When a node in the backend service cluster is faulty, LVS automatically isolates the faulty node.

Prerequisites

The LVS environment of the test cluster has been configured.

Test Methods

1. Stop a backend node, for example, CDN-1.
2. Run this command to check whether CDN-1 node is removed from the cluster.

   ipvsadm -L –n

   The following information is displayed:

   Prot LocalAddress:Port Scheduler Flags
     -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
   TCP  192.168.0.184:80 wrr persistent 50
     -> 192.168.0.146:80            Route   3      0          0