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Eric_Brander_27's avatar
Eric_Brander_27
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Mar 15, 2013

How can I verify Fail-over status?

We're running a pair of 8900 LTMs on 10.2.2 in an active/standby configuration and using serial for failover and network for session. We need to physically move the devices to another part of the data center a short distance away and avoid an outage. The plan is to shutdown the standby, move it 25 feet away (as the cable flies) bring it up and reattach the serial cable (we have a longer one for this task). I need to prevent a dueling master scenario so I plan to leave the ethernet interfaces unattached until I verify that it will not try and go master. I cannot seem to find a command or a place to look to verify that the device sees the master across the serial cable, status, etc. (thinking show fail on a cisco router). Is there anything like that for an LTM?

 

 

TIA,

 

 

Eric

 

application delivery
availability
LTM
TMOS

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  • Kevin_50761's avatar
    Kevin_50761
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    May 07, 2013
    Why not force the current active device to stay active before you start your work to prevent a possible failover? Then after you move the standby, reconnect the cable, execute the command as Steve mentioned, then remove the force active stanza from the active device.
  • Eric_Brander_27's avatar
    Eric_Brander_27
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    May 07, 2013

    I needed to verify the failover status to confirm that the pair was in sync and communicating sync, and etc after moving the devices and running a new set of failover cables. Forcing failover would certainly work, but I was looking for a simple command to run as part of our build instructions that would confirm without a doubt that the cluster was up.