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venkatmsys's avatar
venkatmsys
Level 4
15 years ago

cluster simulator

Hai all ,


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


Venkat.
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business continuity
Cluster Server
Troubleshooting
  • Gaurav_S's avatar
    Gaurav_S
    15 years ago

    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.
  • Gaurav_S's avatar
    Gaurav_S
    Moderator
    15 years ago

    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's avatar
    Gaurav_S
    Moderator
    15 years ago

    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's avatar
    Anoop_Kumar1
    Level 5
    15 years ago
    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.