How to add a node to a cluster in VCS?



  • Before adding a system to a VCS cluster you must physically add the system to the cluster, in a cluster greater than two nodes this is done via switches or hubs for the private network, so the two ports on the NIC qfe0 and qfe1 go to two separate ports on separate hubs or switches.

    Install the VCS software manually, then do the following

    Create a /etc/llthosts file on the new system, add the new system and update it on all the systems in the cluster>/p>

    Create a /etc/llttab on the new system and add the new system to it, similar to below

    set-node sue
    set-cluster 2
    link qfe0 /dev/qfe:0 - ether - -
    link qfe1 /dev/qfe:1 - ether - -

    On the new system run

    # /sbin/lltconfig -c
    

    Create a file /etc/gabtab, make the entry the same as the other systems

    /sbin/gabconfig -c
    

    or

    /sbin/gabconfig -c -n3 (number changed to add new system)
    

    On the new system run

    # /sbin/gabconfig -c
    

    On all systems in the cluster to verify run

    # /sbin/gabconfig -a
    

    On an existing system in the cluster make config read/write

    # haconf -makerw
    

    Add the new system

    # hasys -add sue
    

    Update the config

    # haconf -dump -makero
    

    From the new system, start VCS

    # hastart
    

    From the new system verify

    # /sbin/gabconfig -a
    

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