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Mohd_138423's avatar
Mohd_138423
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Jan 29, 2014

LTM Pool UP/DOWN - Urgent & Critical

Dear Fellows,

 

We have a serious problem, where pools are fluctuating UP/Down because pool members are fluctuating UP/Down. When all pool members are down, the pool will be down and also VS will be down. Users are complaining as they can't access systems. This happens randomly at different times and not related to working hours at all. I really appreciate your assistance in this matter.

 

Mohd

 

APM
application delivery
availability
performance
security

5 Replies

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  • Cory_50405's avatar
    Cory_50405
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    Jan 29, 2014

    The causes for this could be numerous. Have you performed a tcpdump on the LTM to determine what is happening? How often are the members going up and down?

     

    Please post your pool and node configurations here if you would so we can diagnose the issue.

     

  • Mohd_138423's avatar
    Mohd_138423
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    Jan 29, 2014

    I am new to this box, What useful info I should collect from tcpdump?? How Can I show you the pool and node configurations as it is in GUI??

     

    For frequency, each pool member in fluctuating 3 times up/down as average Thanks...

     

    • Cory_50405's avatar
      Cory_50405
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      Jan 29, 2014
      From the CLI (tmsh), perform 'list ltm pool poolname', where poolname is the name of your pool. Please also do this for your virtual server, 'tmsh list ltm virtual virtualservername', where virtualservername is the name of your virtual server. Let's look at your configuration before doing any captures.
    • Cory_50405's avatar
      Cory_50405
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      Jan 29, 2014
      Correction, for virtual server, do 'list ltm virtual virtualservername', where virtualservername is the name of your virtual server. The 'tmsh' portion isn't needed if you are already in tmsh.
  • Russell_Moore_8's avatar
    Russell_Moore_8
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    Jan 29, 2014

    Are you concerned that the health monitors are not properly detecting the health status of pool members? The Server Administrators show logs that the servers are actually healthy and taking requests when these events happen?