How do I check my Veritas cluster?

03/09/202203/09/2022 | Sarah HendricksonSarah Hendrickson | 0 Comment | 12:00 am

How do I check my Veritas cluster?

You need to check cluster operaton only if you installed and configured an HA version of the Storage Foundation software. Identify the system state of each node in the output of this command. If the value is running for all the nodes, VCS is successfully installed and running.

How do I check my VCS LLT status?

Verifying LLT

  1. Log in as superuser on the node galaxy.
  2. Run the lltstat command on the node galaxy to view the status of LLT.
  3. Log in as superuser on the node nebula.
  4. Run the lltstat command on the node nebula to view the status of LLT.
  5. To view additional information about LLT, run the lltstat -nvv command on each node.

How Veritas Cluster Server works?

A single VCS cluster consists of multiple systems connected in various combinations to shared storage devices. VCS monitors and controls applications running in the cluster, and restarts applications in response to a variety of hardware or software faults.

What is Veritas LLT?

The Low Latency Transport protocol is used for all cluster communications as a high-performance, low-latency replacement for the IP stack. LLT has the following two major functions: Traffic distribution. LLT provides the communications backbone for GAB.

What is gab in Veritas Cluster?

GAB provides membership and messaging service, both for the cluster as a whole and for groups of applications running it. The GAB membership service provides orderly startup and shutdown of a cluster. The file /etc/gabtab is used to configure GAB.

How do I start a VCS cluster?

Starting VCS

  1. Log in as root user.
  2. Start LLT and GAB. Start I/O fencing if you have configured it. Skip this step if you want to start VCS on a single-node cluster.
  3. Start the VCS engine. # hastart. To start VCS in a single-node cluster, run the following command: # hastart -onenode.

Which type of cluster is VCS?

Veritas Cluster Server (rebranded as Veritas Infoscale Availability and also known as VCS and also sold bundled in the SFHA product) is a high-availability cluster software for Unix, Linux and Microsoft Windows computer systems, created by Veritas Technologies.

What is gab in Veritas cluster?

How do I start a LLT?

Starting LLT, GAB, and VCS after manual configuration

  1. On each node, run the following command to start LLT: # /etc/init.d/llt start. If LLT is configured correctly on each node, the console output resembles:
  2. On each node, run the following command to verify that LLT is running: # /sbin/lltconfig LLT is running.

How do I run a VCS tool?

To start VCS Simulator from the command line (Windows)

  1. To simulate a cluster running a particular operating system, copy the types.cf.
  2. Add custom type definitions to the file, if required, and rename the file to types.cf.
  3. If you have a main.cf file to run in the simulated cluster, copy it to.
  4. Start VCS Simulator:

How do I manually start VCS cluster?

To start VCS manually, run the following commands on each node in the cluster:

  1. Log in as root user.
  2. Start LLT and GAB. Start I/O fencing if you have configured it. Skip this step if you want to start VCS on a single-node cluster.
  3. Start the VCS engine. # hastart.

How do I unfreeze nodes in VCS?

Unfreezing the service groups

  1. On any node in the cluster, make the VCS configuration writable: # haconf -makerw.
  2. Edit the /etc/VRTSvcs/conf/config/main.cf file to remove the deprecated attributes, SRL and RLinks, in the RVG and RVGShared resources.

How do you stop the LLT and GAB?

Run the following command to stop VCS. Stop gab. Stop llt. Update llttab / llthosts / gabtab as needed.

How do I set up a VCS cluster?

Steps involved to setup Veritas Cluster Server (VCS) on RHEL7

  1. Start the initial configuration.
  2. Add the Cluster member nodes (node1 and node2)
  3. Disable IO Fencing if not required.
  4. Enter the cluster informations.
  5. Configure the Virtual IP for the cluster.
  6. Secure mode Settings.
  7. Configure SMTP Notification.

How do you check if Veritas Cluster is frozen?

Recommended Action: Use the output of the command hagrp -display service_group to verify the value of the Frozen and TFrozen attributes. Use the command hagrp -unfreeze to unfreeze the group. Note that VCS will not take a frozen service group offline.

How do I stop a VCS cluster?

To stop VCS manually, run the following commands on each node in the cluster:

  1. Log in as root user.
  2. Take the VCS service groups offline and verify that the groups are offline.
  3. Stop the VCS engine.
  4. Verify that the VCS engine port h is closed.
  5. Stop I/O fencing if you have configured it.

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