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Forum Discussion

wowchens's avatar
wowchens
Icon for Nimbostratus rankNimbostratus
Nov 12, 2009

Load balance based on backend connections

Hello All: I have a requirement with one of my clients for LTM to load balance 4 IIS servers based on the number of available MQ connections that each server has. There is a limit of the number of con...
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hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Nov 13, 2009
Could you poll the servers with SNMP to get the count of available MQ connections? If so, you could use the SNMP DCA Base monitor and agent to collect the metrics and increase the ratio for servers which have more available MQ connections.

 

 

It might be possible to do something similar with WMI. But I'm not sure whether you could get the MQ connection count using WMI.

 

 

Another option would be using an iControl app (possibly running on LTM itself) which polls the /availableconn.asp page and marks the pool members up or disabled (Only persistent or active connections allowed) if the available connection count is too low.

 

 

You could potentially try to check the /availableconn.asp page using HTTP::retry as described in this article from Deb (Click here), but I think that would be expensive in latency to try to do on every request.

 

 

Aaron