Blog for Unix Admin / VCS Fundamentals / Veritas Cluster Services
by Ramdev · Published July 16, 2011 · Last modified July 23, 2016
The purpose of this post is to make the Cluster concept easy for those young brothers who have just started their career as System Administrator. while writing this post I have only one thing in mind, i.e. explain the entire cluster concept with minimum usage of technical jargon...
Beginners Lessons / VCS Beginners Guides / VCS Fundamentals / Veritas Administration for unixadmin / Veritas Cluster Services
by Ramdev · Published August 19, 2011 · Last modified July 23, 2016
The current members of the cluster are the systems that are actively participating in the cluster. It is critical for HAD to accurately determine current cluster membership in order to take corrective action on system failure and maintain overall cluster topology. A change in cluster membership...
VCS How To / Veritas Cluster Services
by Ramdev · Published February 11, 2014 · Last modified July 2, 2015
The gabdiskhb utility sets up and maintains the configuration of GAB driver heartbeat disk regions. GAB driver heartbeat disk regions provide channels in addition to the network connections for protection from network failures. These resources describe a 64K region that GAB uses to read and write...
The dlpiping utility exchanges network traffic over a specific DLPI network device to test network connectivity. Each host on the network being tested should run an instance of dlpiping in server mode to reflect packets from the other hosts. An instance of dlpiping in client mode...
The gabport utility displays GAB port information or changes the heartbeat timeout value of a user client process on a GAB port. In normal operation, a GAB client process should heartbeat to GAB at a certain interval. GAB uses this mechanism to monitor the aliveness of...
The gabdiskconf utility can be used to initialize a GAB disk region. It also writes the disk signature to the beginning of each block. The disk signature has three components : 1) a fixed system prefix, “GAB” 2) the node id for the block, and, 3)...
The haagent command starts, stops, displays, and lists VCS agents. The -start and -stop options enable you to debug custom agents without having to start and stop VCS. When using the command to specify or modify an attribute’s value that begins with a dash (“-“), precede...
The haalert command line utility enables users to view and delete VCS alerts.
Understanding VCS default Environmental Variables and their Default values will help us troubleshooting performance related issues.
Unix Experts / VCS Fundamentals / VCS How To / Veritas Cluster Services
by Ramdev · Published April 28, 2022
A service group is an instance of a computer service that is made highly available with VCS. A group comprises one or more resources of various resource types, such as disks, volumes, or databases. Use the hagrp command to view information about and manage each group
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