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cody8411_186897's avatar
cody8411_186897
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Jul 28, 2016
Solved

Active/Standby load balancing dynamically with LTM

I'm not sure if I'm using the right terminology, but some application folks want to set up identical web servers where they can test upgrades and changes to server A while maintaining production traf...
application delivery
application load balancing
big-ip ltm
devops
irule
iRules
LTM
  • ekaleido_26616's avatar
    ekaleido_26616
    Jul 28, 2016

    Priority groups. You can assign nodes in a pool to different priority groups so that some nodes will only be used if others with a better priority are down.

     

ekaleido's avatar
ekaleido
Icon for Cirrus rankCirrus
Jul 28, 2016

Priority groups. You can assign nodes in a pool to different priority groups so that some nodes will only be used if others with a better priority are down.

 

  • cody8411_186897's avatar
    cody8411_186897
    Icon for Nimbostratus rankNimbostratus
    Jul 28, 2016

    Is there some other way I can monitor those devices to make it so they can trigger the priority in those pools? For instance, if I just use a basic TCP port monitor, those ports will never go down or be disabled.

     

  • ekaleido's avatar
    ekaleido
    Icon for Cirrus rankCirrus
    Jul 28, 2016

    You can create a custom health monitor such that they can modify something to cause the server to be removed from the pool, if that's what you're after.

     

  • cody8411_186897's avatar
    cody8411_186897
    Icon for Nimbostratus rankNimbostratus
    Jul 29, 2016

    Great idea, I'll start to look at making a GET to return a string and take the the pool member down if it doesn't exist. That way they can remove the string on the passive node.