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cluster simulator

venkatmsys
Level 4
Hai all ,


              Can u pls explain what s Cluster Simulator and what is the need of it ?


Venkat.
1 ACCEPTED SOLUTION

Accepted Solutions

Gaurav_S
Moderator
Moderator
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From VCS users guide for 5.0MP3:

About VCS Simulator

VCS Simulator enables you to simulate and test cluster configurations. Use VCS
Simulator to view and modify service group and resource configurations and
test failover behavior. VCS Simulator can be run on a stand-alone system and
does not require any additional hardware.
VCS Simulator runs an identical version of the VCS High Availability Daemon
(HAD) as in a cluster, ensuring that failover decisions are identical to those in an
actual cluster.
You can test configurations from different operating systems using VCS
Simulator. For example, you can run VCS Simulator on a Windows system and
test VCS configurations for Windows, Linux, and Solaris clusters. VCS Simulator
also enables creating and testing global clusters.
You can administer VCS Simulator from the Java Console or from the command
line.

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Gaurav_S
Moderator
Moderator
   VIP    Certified

VCS simulator is a utility to test some basic jobs of cluster...

You can feed your confuigurations in Simulator & you can exactly see the same GUI as of your originial cluster.... You can also perform some basic failover jobs, resource addition, deletion etc...

Great point is, you can also check the engine_A.log as similar like you are looking in originial cluster....

More stuff can be find in VCS users guide..

https://vos.symantec.com/documents/doc_details/sfha/5.0%20MP3/Solaris/ProductGuides/



Gaurav

Gaurav_S
Moderator
Moderator
   VIP    Certified

From VCS users guide for 5.0MP3:

About VCS Simulator

VCS Simulator enables you to simulate and test cluster configurations. Use VCS
Simulator to view and modify service group and resource configurations and
test failover behavior. VCS Simulator can be run on a stand-alone system and
does not require any additional hardware.
VCS Simulator runs an identical version of the VCS High Availability Daemon
(HAD) as in a cluster, ensuring that failover decisions are identical to those in an
actual cluster.
You can test configurations from different operating systems using VCS
Simulator. For example, you can run VCS Simulator on a Windows system and
test VCS configurations for Windows, Linux, and Solaris clusters. VCS Simulator
also enables creating and testing global clusters.
You can administer VCS Simulator from the Java Console or from the command
line.

Anoop_Kumar1
Level 5
VCS simulator is a tool to simulate real cluster environment for testing purpose.

Utilize the Veritas Cluster Simulator for the following scenarios-

a) Use the existing cluster configuration as a template for creation of a new cluster.

b) Observe cluster behavior in fault / failover scenarios.

c) Make changes to a cluster configuration without affecting the actual in-use cluster, to observe changes in behavior.

d) Review cluster configurations for Best Practice implementation.



To view your own existing cluster configuration in the simulator:

1) If not previously installed, install vrtsvcssim.msi from the Veritas Storage Foundation media / tarball onto a Windows PC.

- on the 4.1 media, vrtsvcssim.msi is located in  \windows\WindowsInstallers\WindowsSimulator\EN

- on the 5.0 / 5.0MP1 / 5.0MP3 media, vrtsvcssim.msi is located in windows\VCSWindowsInstallers\Simulator\EN



2) Copy all files ending in ".cf" from the /etc/VRTSvcs/conf/config directory of a cluster node to a temporary location on a Windows-based PC.



3) Review the "main.cf" file in your temporary location for the following:

a) the cluster name

b) a system name that is a cluster node



4) Create a cluster in the simulator by clicking "Add Cluster".

a) Name the cluster as determined in Step 3a.

b) Specify a valid name of one of the cluster nodes for the cluster from Step 3b.

c) Specify an unused port number. Typically available port numbers are in the range of 15000 to 64000.

d) Select the OS platform of the original cluster, then click "OK".


4) Copy the *.cf files from the temporary location into "Program Files\Veritas\VCS Simulator\<cluster_name>\conf\config" directory.

5) Start the simulated cluster by clicking the desired cluster name from the list and then clicking "Start Cluster".

6) Click on "Launch Console" then input a valid user name and password.

7) A new window showing the simulated cluster should open containing the original cluster configuration for review and modification.
 

venkatmsys
Level 4
Thanks Gavrav

venkatmsys
Level 4
Thank u very much Anoop

Venkat