VCS

Configuration of two node VCS cluster on Solaris using Desktop/Lappy

everyone wants to be expert on any of the cluster technologies. Especially on veritas cluster due to its market capitalization.But not every body will get the opportunity to work on it since VCS will be running on critical environment. Then how to learn ? ….

Cluster Communications / LLt, GAB, HAD / Configurations

GAB, LLT and HAD forms the basic building blocks of vcs functionality. I/O fencing driver on top of it provides the required data integrity. Before diving deep into the topic lets see some basic components of VCS which contribute to the communication stack of VCS.

Configuration of IO fencing

I/O fencing is a mechanism to prevent uncoordinated access to the shared storage. This feature works even in the case of faulty cluster communications causing a split-brain condition.

VCS upgrade 5.0 to 5.1

This procedure shows how to upgrade a 4 node cluster from 5.0MP3RP4 to 5.1SP1RP1P1 . All four nodes will be upgraded for VCS together at the beginning of this procedure. Then Storage Foundation can be upgraded either one node or two nodes at a time, while the VCS Service Groups are running on the other two nodes.  This procedure is not recommended for CFS/CVM environment.

Configure Zone as Service group

Here we will see after Creating the local zone  how to add zone as resource in vcs 5.1 . I tried to add it via java console but didn’t work .Finally it worked in command line .Assume here we have already have the configured service group.

Adding / Removing Cluster node

This chapter describes how to add nodes to an existing cluster, and how to delete nodes from clusters. This chapter provides procedures for these tasks for Linux, UNIX,

How to configure CVM

The CFS is designed with master/slave architecture. Though any node can initiate an operation to create, delete, or resize data, the master node carries out the actual operation. CFS caches the metadata in memory….