How to configure Veritas Cluster UUID? When you install VCS seprately and if you want to bring the node under cluster, then you need to modify the UUID. IF you don’t modify, you will get the following error. >>>>>> 2014/11/24…

How to find VLAN number in AIX? You can use the entstat command to find the VLAN number. # entstat -dt en2 | grep -i vlan Invalid VLAN ID Packets: 0 Port VLAN ID: 400 VLAN Tag IDs: None [root@servr1:/root]…

Joining the cluster memebership When you boot the server LLT/GAB starts automatically, but HAD won’t start until GAB membership established. Here is an example for 2 node cluster. 1. LLT will start on each node 2. GAB stats on each…

Generate VCS (Veritas cluster Server) commands from main.cf If you want see what are the commands have been executed during the VCS configuraion, you can issue the following command and it will generate all the commands. hacf -cftocmd /etc/VRTSvcs/conf/config -dest…

What is VCS Resource? Resources are VCS components that correspond to hardware or software components such as network, storage , application etc. VCS control the resources as below. 1. Online the resource 2. Offline the resource 3. Monitor the resource…

What is Freeze in VCS? And what is the advantage? It means VCS agent won’t monitor thes resrouce and all the resources will be disabled. It is good when you are doing maintenance on Resources.