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New Member

ACE4700 conn limit and rserver down

Hello,

I have this configuration:

serverfarm host SF_BOOKING

failaction purge

predictor leastconns slowstart 60

probe PROBE_HTTP_BOOKING

retcode 200 500 check count

rserver SERVER-1 80

conn-limit max 1200 min 1100

inservice

rserver SERVER-2 80

conn-limit max 1200 min 1100

inservice

rserver SERVER-3 80

conn-limit max 1200 min 1100

inservice

and state of servers is:

SKY-ACE1/www# sh serverfarm SF_BOOKING detail

serverfarm : SF_BOOKING, type: HOST

total rservers : 3

active rservers: 2

description : -

state : ACTIVE

predictor : LEASTCONNS

slowstart : 60 secs

failaction : PURGE

back-inservice : 0

partial-threshold : 0

num times failover : 0

num times back inservice : 0

total conn-dropcount : 0

Probe(s) :

PROBE_HTTP_BOOKING, type = HTTP

---------------------------------

----------connections-----------

real weight state current total failures

---+---------------------+------+------------+----------+----------+---------

rserver: SERVER-1

10.218.71.30:80 8 MAXCONNS 636 7530 140

max-conns : 1200 , out-of-rotation count : 0

min-conns : 1100

conn-rate-limit : - , out-of-rotation count : -

bandwidth-rate-limit : - , out-of-rotation count : -

retcode out-of-rotation count : 0

load value : 0

rserver: SERVER-2

10.218.71.35:80 8 OPERATIONAL 562 7297 127

max-conns : 1200 , out-of-rotation count : 0

min-conns : 1100

conn-rate-limit : - , out-of-rotation count : -

bandwidth-rate-limit : - , out-of-rotation count : -

retcode out-of-rotation count : 0

load value : 0

rserver: SERVER-3

10.218.71.40:80 8 OPERATIONAL 529 4712 58

max-conns : - , out-of-rotation count : -

min-conns : -

conn-rate-limit : - , out-of-rotation count : -

bandwidth-rate-limit : - , out-of-rotation count : -

retcode out-of-rotation count : 0

load value : 0

I have two questions:

1. Why is state of SERVER-1 'MAXCONNS', when real conns is under 1100 (min-conns)?

2. I find that SERVER-1 goes down (reason probe), client got TCP RST. Client is requesting VIP of course. When I clear 'conn-limit' to default (none), this problem isn't. The same if SERVER-3 is in this state (MAXCONNS). MAXCONNS is cancelled after 'no inservice, inservice'.

It's feature or bug? :)

sw release: 3.0(0)A1(8.0)

(I found no bug for this release)

thanks for any help,

martin

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Re: ACE4700 conn limit and rserver down

CSCsr20530: rservers are stuck in MaxConn state

CSCsr65774: server stuck in MAXCONN if conn-limit and RL hit simultaneously

CSCsq83367: server stuck in MAXCONN state if inservice/noinservice

CSCsr63601: rserver are stuck in MaxConn state after ft switchover

CSCsv21495: rservers stuck in Max-conn while configuring limits during traffic .

CSCsr72390: rserver do not get conn after going OOR w/ maxconn

3 REPLIES
Cisco Employee

Re: ACE4700 conn limit and rserver down

Martin,

the maxconn limit function is broken in your release.

You should try A3(1) and see if it helps as many fixes where added already...but unfortunately there are still a few being worked on.

Gilles.

New Member

Re: ACE4700 conn limit and rserver down

Gilles,

thank you for this information. It's very helpful for me, because I can't find it in release notes, or bug tool.

can you tell me, where can I find this information? (some release note, or bug ID).

thanks.

martin

Cisco Employee

Re: ACE4700 conn limit and rserver down

CSCsr20530: rservers are stuck in MaxConn state

CSCsr65774: server stuck in MAXCONN if conn-limit and RL hit simultaneously

CSCsq83367: server stuck in MAXCONN state if inservice/noinservice

CSCsr63601: rserver are stuck in MaxConn state after ft switchover

CSCsv21495: rservers stuck in Max-conn while configuring limits during traffic .

CSCsr72390: rserver do not get conn after going OOR w/ maxconn

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