Switching the IPVS Kernel Module on LVS Nodes

Overview

This chapter describes how to switch the IPVS kernel module so that the FNAT mode can be used.

Precautions

1. To switch the IPVS kernel module, you need to have the root permission.
2. Keepalived must be disabled before you switch the kernel.
3. During the switchover, the traffic is interrupted and IPVS tables in all kernels are deleted.

Verification

1. Run the following command to switch the IPVS mode to the FullNAT mode:

   ipvs-switch fnat

   [root@localhost keepalived]# ipvs-switch fnat 
   Clear ip_vs tables 
   rmmod ip_vs modules 
   doing depmod 
   modprobe ip_vs modules 
   switch to fnat mode successfully

   

   Run these commands on both primary and standby LVS nodes.