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RLakin_185753's avatar
RLakin_185753
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Feb 04, 2015

How does a Monitor act when node is marked down?

We currently have HTTPS monitors set up at Pool level, because we have LOTS of servers and this makes config easier. Problem arises when we mark the node down for a deployment and the monitor continues to call the web service behind that node. During deployment the service starts and stops several times, and we'd rather there be no traffic on the service.

 

So, is there a way to stop the monitor for a node that's been marked down? If we configure the monitor at Pool Member level will this get the desired result? How about a custom monitor configured at the Node level?

 

Thanks! Ryan

 

deployment
management
microsoft

7 Replies

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  • Hannes_Rapp's avatar
    Hannes_Rapp
    Icon for Nimbostratus rankNimbostratus
    Feb 04, 2015

    If you don't want to see any health-check requests in end-servers during the maintenance, you have to remove the health-check monitor from LTM pool(s), in addition to forcing the node offline.

     

    Forcing a pool member offline (instead of a node) would produce no different outcome, the health-check always continues to make it's requests.

     

  • NikhilB's avatar
    NikhilB
    Icon for Employee rankEmployee
    Feb 04, 2015

    Look into the 'manual resume' option in the monitor profile. After a system is marked down by a monitor, you will have to manually activate it. May be handy for what your looking to do and you can apply this monitor to a specific pool member also. (as opposed to the pool level)

     

    • RLakin_185753's avatar
      RLakin_185753
      Icon for Nimbostratus rankNimbostratus
      Feb 04, 2015
      I don't think that helps in my case. Manual resume only appears to ipact whether the node is automatically marked 'up' when the monitor gets good signals. Based on the previous reply, and some of my experience, the monirot will continue to fire regardless of the state of the node. What I'm trying to do is stop, or turn off, the monitor completely while the node is marked down. It appears the only way to it is by reconfiguring the monitor when we mark the node up/down.
    • NikhilB's avatar
      NikhilB
      Icon for Employee rankEmployee
      Feb 04, 2015
      Here's a tght: if you can complete your maintenance in a span of 24hrs, change the internal time of the monitor to (86400sec).
  • NikhilB_149913's avatar
    NikhilB_149913
    Historic F5 Account
    Feb 04, 2015

    Look into the 'manual resume' option in the monitor profile. After a system is marked down by a monitor, you will have to manually activate it. May be handy for what your looking to do and you can apply this monitor to a specific pool member also. (as opposed to the pool level)

     

    • RLakin_185753's avatar
      RLakin_185753
      Icon for Nimbostratus rankNimbostratus
      Feb 04, 2015
      I don't think that helps in my case. Manual resume only appears to ipact whether the node is automatically marked 'up' when the monitor gets good signals. Based on the previous reply, and some of my experience, the monirot will continue to fire regardless of the state of the node. What I'm trying to do is stop, or turn off, the monitor completely while the node is marked down. It appears the only way to it is by reconfiguring the monitor when we mark the node up/down.
    • NikhilB_149913's avatar
      NikhilB_149913
      Historic F5 Account
      Feb 04, 2015
      Here's a tght: if you can complete your maintenance in a span of 24hrs, change the internal time of the monitor to (86400sec).