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Jinshu_134425's avatar
Jinshu_134425
Icon for Nimbostratus rankNimbostratus
Feb 22, 2016

Virtual server dependency using irule

Hi,

 

I'm looking for a solution for the below requirement. Please help me.

 

I have two Virtual server. VS_A and VS_B. VS_B have three severs in the pool. How can i create an irule says that if two servers are down in the VS_B pool, mark the virtual server VS_A down completely?

 

devops
iRules
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security

1 Reply

  • nathe's avatar
    nathe
    Icon for Cirrocumulus rankCirrocumulus
    Feb 22, 2016

    Jinshu, If i understand your requirements correctly (apologies if not and please add more info in this case) i don't think this can be achieved by iRules. If you want to down a VS based on the pool availability of another pool this is how i'd do it.

     

    Create a custom monitor for all 3 pool members in VS_B pool and in each monitor assign an Alias Address of the pool member IP. Then assign these 3 monitors to the VS_A pool. This means it will monitor these extra pool members not currently in VS_A pool. I would then change Availability Requirement to, say, At Least 3 (assuming there is already a monitor on VS_A pool). then if two of the monitors go down then you would down VIP A.

     

    Does this make sense / fit your requirements? Again, sorry if i've missed the requirement.

     

    Hope this helps,

     

    N