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Forum Discussion

dacrud_18985's avatar
dacrud_18985
Icon for Nimbostratus rankNimbostratus
Oct 13, 2010

Least connections balancing method understanding

Hi,     I have a pool of 10 nodes configured in a least connections load balancing method. This pool is using a custom monitor (doing a GET and checking for text back) that we later found out i...
management
monitoring
nathe's avatar
nathe
Icon for Cirrocumulus rankCirrocumulus
Oct 14, 2010
Hi Dacrud

 

 

Least Connections is only concerned with the current connection count between the big-ip and the server, not whether the server is serving traffic. If the pool member is up and it's his turn for a connection (i.e. currently has the least number of connections) it gets one.

 

 

One reason why a pool member would receive most of the connections is if it went offline for a period, once it was back online it would have potentially far fewer current connections, in comparison to the other pool members. This member would then receive the necessary amount of subsequent connections before parity with the others was achieved.

 

 

Least connections doesn't take into account what other traffic the pool member is serving, rather only connections from the VS specifically.

 

 

Hope the above is all correct and useful info?

 

 

N