Chris Paquin

AI, Virtualization, Containers, Infrastructure, Linux

Tag: switchover

  • Cisco UCS Failover Via 6248 CLI

    Cisco UCS Failover Via 6248 CLI

    Ucs_6248_lg1Need to fail over Cisco UCS Manager from one 6248 to another. Oh did I mention that you are in a hurry because you are going to have to sift through pages and pages of pdfs to get the information. I found this out the hard way. Anyway, out of the kindness of my heart I have documented this process below.

    First log into one of your 6248s and figure out which one is the primary by running the command below.

    ucs01-A# show cluster state
    Cluster Id: 0x4b05e6042b6111e1-0x8c9e547fee4bbf24

    A: UP, SUBORDINATE
    B: UP, PRIMARY

    Note that UCS01-B is our primary. So log into UCS-B and issue the command below.

    ucs01-B# connect local-mgmt

    Then run the command to make UCS-A our primary.

    ucs01-B(local-mgmt)# cluster lead a
    Cluster Id: 0x4b05e6042b6111e1-0x8c9e547fee4bbf24

    Note that you must issue the failover command on the node that is the primary, otherwise this happens.

    ucs01-A(local-mgmt)# cluster lead a
    Cluster Id: 0x4b05e6042b6111e1-0x8c9e547fee4bbf24
    request failed: local node is subordinate

    During the failover process you will see the output below when checking the cluster state.

    ucs01-B(local-mgmt)# show cluster state

    Cluster Id: 0x4b05e6042b6111e1-0x8c9e547fee4bbf24 B: UP, PRIMARY, (Management services: SWITCHOVER IN PROGRESS) A: UP, SUBORDINATE,

    (Management services: SWITCHOVER IN PROGRESS) HA NOT READY Management services: switchover in progress on local Fabric Interconnect