Forum Discussion
NimbostratusLoad Balancing not working with least session
We are having least session load balancing setup with SSL persistence.SSL is offloaded at server. It works fine for a while and then all the requests are directed to only one server in a pool of two servers. If we delete and re create the pool, above behavior is repeated again.Any ideas ?
4 Replies
shaggycan you please provide the virtual server and pool configurations? The output from the following commands should be sufficient. Also, what version of BIGIP are you running? tmsh list ltm virtual (virtual-server-name) tmsh list ltm pool (pool-name)
Mahmoud_Eldeeb_Cirrostratus
it should work if everything were configured properly, please share your config.
- nitass
Employee
can you check persistence table when the issue is happening?
sol12105: Overview of Least Sessions load balancing
https://support.f5.com/kb/en-us/solutions/public/12000/100/sol12105.html 
Dinesh_22825Config is standard config. When I create the initial pool I can see persistence records for both server IP but later I get persistence records for only one server IP.Also, there are only 3 source IPs that will be hitting the VIP.
ltm virtual abc_VS { destination 1.1.1.1:9443 ip-protocol tcp mask 255.255.255.255 persist { 30-minute-SSL-profile { default yes } } pool abc_Pool profiles { /Common/tcp { } } source 0.0.0.0/0 source-address-translation { pool SNAT_1.1 type snat } vs-index 642 }
ltm pool abc_Pool { load-balancing-mode least-sessions members { 1.1.1.12:9443 { address 1.1.1.12 session monitor-enabled state up } 1.1.1.13:9443 { address 1.1.1.13 session monitor-enabled state up } } monitor /Common/tcp }
