CSS Load Balancing Issue

Unanswered Question
Mar 24th, 2009

I have a CSS 11503 running ver 7.50.1.03 and I have an issue with load balancing. The connections seem to be hitting more to one server than the other. I have listed today's stats. Yesterday they were reversed where ps90prod4 was hit more. From the "show rule" command, the balance is Round Robin (default). I have also listed the config's for the content rules. Is this configured correctly for Round Robin? If so, why are they hitting one server more, then switching the next day and hitting the other? Thanks

#sh service ps90prod3

Last Clearing of Stats Counters: 03/24/2009 09:10:58

Mtu: 1500 State Transitions: 50

Total Local Connections: 7494 Total Backup Connections: 0

Current Local Connections: 38 Current Backup Connections: 0

Total Connections: 7494 Max Connections: 65534

Total Reused Conns: 0

Weight: 1 Load: 17

Weight Reporting: None

#sh service ps90prod4

Last Clearing of Stats Counters: 03/24/2009 09:17:43

Mtu: 1500 State Transitions: 56

Total Local Connections: 1727 Total Backup Connections: 0

Current Local Connections: 2 Current Backup Connections: 0

Total Connections: 1727 Max Connections: 65534

Total Reused Conns: 0

Weight: 1 Load: 7

Weight Reporting: None

owner ps90prod

content rule-prod-redirect

protocol tcp

vip address 10.1.52.53

add service ps90prod-redirect

url "//psprod.kichler.net/"

add service ps90prod-redirect2

port 80

active

content rule-prod2

add service ps90prod3

add service ps90prod4

vip address 10.1.52.53

sticky-inact-timeout 60

protocol tcp

sticky-mask 255.255.240.0

advanced-balance sticky-srcip

active

I have this problem too.
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Gilles Dufour Thu, 03/26/2009 - 01:06

this is the result of using sitckyness.

Especially with a mask like this.

If one subnet is more active than others, you will see more quest to one servers.

sticky-mask 255.255.240.0

advanced-balance sticky-srcip

Try changing the mask to a 255.255.255.255 and see if that helps.

Gilles.

tostrander Thu, 04/02/2009 - 08:57

I changed the advance balance configuration to arrowpoint-cookie. While this has resolved my issue with loadbalancing, I now seem to have an issue with clients being stuck to the server. When I do a "sh sticky-stat", I see that there are no sticky entries and users are being kicked out the their sessions but I have several connections to the service. The People Soft program we are using needs several ports open to connect for different reporting and management uses so I opened them with the content rule-prod2 but need the clients to be stuck to port 8080 which is the reason for content rule-prod. Here are the configs and any help would be grateful.

owner ps90prod

content rule-prod

vip address 10.1.52.53

add service ps90prod3

add service ps90prod4

advanced-balance arrowpoint-cookie

url "/*"

protocol tcp

port 8080

active

content rule-prod-redirect

protocol tcp

vip address 10.1.52.53

add service ps90prod-redirect

url "//psprod.kichler.net/"

add service ps90prod-redirect2

port 80

active

content rule-prod2

add service ps90prod3

add service ps90prod4

vip address 10.1.52.53

protocol tcp

active

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