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Forum Discussion

LeeG_118759's avatar
LeeG_118759
Icon for Nimbostratus rankNimbostratus
May 21, 2013

Take Pool Member offline for service upgrade

Disclaimer: I may not be using correct terminology. ( Pool member environment: Windows Server 2008 R2)   We have a pool named LF_Pool, with two members: 10.16.20.83:9080 and 10.16.20.84:9080 ...
dev
devops
iControl
What_Lies_Bene1's avatar
What_Lies_Bene1
Icon for Cirrostratus rankCirrostratus
May 21, 2013
Are you using any persistence? When you test a service call are you sure a new connection is established?

 

 

If the Pool is configured with the default Action on Service Down setting of None then established connections remain (as long as data is sent and received) and possibly new ones can be establish because of persistence.

 

 

If you don't use persistence then changing the setting to Reject is your best bet as TCP will recover quickly and connections to the offline server are removed quickly.

 

 

If you are using persistence: a) do you really need to b) using OneConnect helps connections move more quickly and c) Reject is still an option as TCP recovery mechanisms may still mean 0 data loss and seamless recovery.