Change the Host IP address in the Veritas cluster
Hello All,
We have a Veritas cluster server setup (VCS-HA,VCS-CFS & VERITAS-RAC) where on few setup we required to change the data IP address of some host(node). I refer few notes but not sure except /etc/hosts is there any file need to update/edit. Please help me if you have any process/technote to make those change & make that changed IP persistant. Also would like to know the impact of this activity. The systems are Linux 6.5 & 6.6 & cluster versions are VCS 6.2 & 6.1.
If the hostname is not changing and the new IP is in the same subnet then nothing needs to be changed from a VCS point of view. There are a few rare exceptions which are if you are using MultiNICA agent or LLT over UDP, so just to make sure you should search for your current IP in /etc/VRTSvcs/conf/config/main.cf and /etc/llttab to confirm the existing IP is not in these files.
If the subnet is changing, then this would mean you would need to change all existing virtual IPs to the new subnet in VCS.
From an O/S point of view, if you are using redhat you need to change /etc/sysconfig/network-scripts/ifcfg-interface-name
Mike
