[f-nsp] question on cookie persistance+L7 health check

[Bahwal, Osama B]

Thank you for your reply,

You are right there was no match for r2...it is very strange...server ports are ok and up.

regards,
________________________________
From: Oliver Adam [oadam at madao.de]
Sent: Wednesday, July 29, 2009 10:11 PM
To: Bahwal, Osama B; foundry-nsp at puck.nether.net
Subject: Re: [f-nsp] question on cookie persistance+L7 health check

Hi,

I do assume you do have a single test client only. Port ssl/443 and therefore HTTPS is configured to use stickiness based on IP addresses:

 port ssl sticky
port ssl sticky-age 5

The client is therefore getting bound to a real server based on the client IP address for at least 5 minutes because of the sticky-age 5 setting. You are going to hit the initially selected real server all the time as long as you client IP does not change.

The config for the http port looks OK. Are you sure all health checks are successful? You do see strange problems in case real server start to flap from up to down. Check this using "show log". On top of that I would suggest to see whether you see matches for rule r2 or not:

show csw-policy p2

There should be a match for every client request coming in with a cookie names ServerID.

R, Oliver

At 07:34 29.07.2009, Bahwal, Osama B wrote:
Content-Language: en-US
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         boundary="_000_FF47403531D68744B85D78645F2240820682FF72A1EMAILBaramcoc_"

Greetings,

I?m facing strange situation and need advise on this issue. I?m trying to use L7 heath check with cookie persistence, L7 is working fine and the cookie was inserted as I can see it using http analyzer. However, the foundry did not functioning as it should be by providing stickiness between the Clint and the real server based on the server ID. Each time I open new session or refresh the opened one it flip me to the other server for http requests. For https, it always switched the requests to server ?B? all the time.

Below is the configuration I?m using, please advise me why this is happening.



Context test
healthck check_A tcp
  dest-ip 10.1.180.14
  port 44444
  protocol http
  protocol http url "GET /enable.html"
  l7-check

healthck checkSSL_A tcp
  dest-ip 10.1.180.14
  port 44445
  protocol ssl
  protocol ssl use-complete
  l7-check

healthck checkSSL_B tcp
  dest-ip 10.1.180.7
  port 44445
  protocol ssl
  protocol ssl use-complete
  l7-check

healthck check_B tcp
  dest-ip 10.1.180.7
  port 44444
  protocol http
  protocol http url "GET /enable.html"
  l7-check

healthck checkboth_A boolean
  and check_A checkSSL_A

healthck checkboth_B boolean
  and check_B checkSSL_B

csw-rule "r2" header "cookie" search "ServerID="
!
csw-policy "p2"
 match "r2" persist offset 0 length 4 group-or-server-id
 default forward 1
 default rewrite insert-cookie
!
server real A 10.1.180.14
 source-nat
 weight 1 1
 port 44444
 port 44444 healthck check_A
 port 44444 keepalive
 port 44444 server-id 1218
 port 44444 group-id  1 1
 port 44445
 port 44445 healthck checkboth_A
 port 44445 keepalive
 port 44445 server-id 1218
 port 44445 group-id  1 1
!
server real B 10.1.180.7
 source-nat
 weight 1 1
 port 44444
 port 44444 healthck check_B
 port 44444 keepalive
 port 44444 server-id 1211
 port 44444 group-id  1 1
 port 44445
 port 44445 healthck checkboth_B
 port 44445 keepalive
 port 44445 server-id 1211
 port 44445 group-id  1 1
!
!
server virtual Final_test 10.1.180.10
 predictor repons-time
 port http
 port http reset-on-port-fail
 port http cookie-name "serverID"
 port http csw-policy "p2"
 port http csw
 port http cookie-age 5
 port ssl sticky
port ssl sticky-age 5
 port ssl reset-on-port-fail
 bind http A 44444 B 44444
 bind ssl A 44445 B 44445


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