LVS
lvs-users
Google
 
Web LinuxVirtualServer.org

ActiveConn growing, InActConn always 0

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: ActiveConn growing, InActConn always 0
From: Joel Nimety <jnimety@xxxxxxxxxxxxxxx>
Date: Mon, 20 Jun 2005 10:39:37 -0400
I'm having an issue with the ActiveConn growing on a loadbalanced smtp setup, it seems that the connection remains in the ESTABLISHED state until it expires. Right now the traffic through this VIP is very low for testing purposes but I intend to load balance our smtp gateway using LVS and I'm afraid this will cause issues (approx 1.5 million emails per day). I'm running 2.6.10-1.770_FC3smp on the real servers and the director.

Also, I'm loadbalancing smtp on port 10225 on a different set of servers running 2.4.21-15.ELsmp and it doesn't exhibit this behavior.

I've seen this question posted before but haven't seen any answers. Should I be concerned? Thanks for any advice.


IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  10.25.1.224:10225 rr
  -> 10.25.19.64:10225            Tunnel  1      1          4
  -> 10.25.19.62:10225            Tunnel  1      0          5
  -> 10.25.19.61:10225            Tunnel  1      1          4
  -> 10.25.19.65:10225            Tunnel  1      0          5
  -> 10.25.19.66:10225            Tunnel  1      1          4
  -> 10.25.19.63:10225            Tunnel  1      0          6
TCP  10.25.1.228:25 rr
  -> 10.25.1.92:25                Tunnel  1      186        0
  -> 10.25.1.85:25                Tunnel  1      180        0

IPVS connection entries
pro expire state       source             virtual            destination
TCP 01:42  ESTABLISHED 10.25.1.242:56963  10.25.1.228:25     10.25.1.85:25
TCP 01:33 FIN_WAIT 10.25.1.92:57049 10.25.1.224:10225 10.25.19.65:10225
TCP 06:19  ESTABLISHED 10.25.1.244:47994  10.25.1.228:25     10.25.1.85:25
TCP 01:21  ESTABLISHED 10.25.1.246:56365  10.25.1.228:25     10.25.1.85:25
TCP 00:59  ESTABLISHED 10.25.1.243:45479  10.25.1.228:25     10.25.1.92:25
TCP 00:37  ESTABLISHED 10.25.1.244:56672  10.25.1.228:25     10.25.1.92:25
TCP 14:38  ESTABLISHED 10.25.1.242:33580  10.25.1.228:25     10.25.1.92:25
TCP 00:25  ESTABLISHED 10.25.1.243:58378  10.25.1.228:25     10.25.1.92:25
TCP 00:09  ESTABLISHED 10.25.1.244:43548  10.25.1.228:25     10.25.1.85:25
TCP 06:08  ESTABLISHED 10.25.1.245:50431  10.25.1.228:25     10.25.1.92:25
TCP 13:49  ESTABLISHED 10.25.1.246:33974  10.25.1.228:25     10.25.1.85:25
TCP 00:16  ESTABLISHED 10.25.1.244:55966  10.25.1.228:25     10.25.1.92:25
TCP 00:47  ESTABLISHED 10.25.1.243:36233  10.25.1.228:25     10.25.1.92:25
TCP 05:19  ESTABLISHED 10.25.1.246:58326  10.25.1.228:25     10.25.1.92:25
TCP 00:32  ESTABLISHED 10.25.1.245:54772  10.25.1.228:25     10.25.1.85:25
TCP 00:52  ESTABLISHED 10.25.1.241:58541  10.25.1.228:25     10.25.1.92:25
TCP 00:10  ESTABLISHED 10.25.1.244:44344  10.25.1.228:25     10.25.1.92:25
TCP 10:53  ESTABLISHED 10.25.2.102:2812   10.25.1.227:53     10.25.1.77:53
TCP 00:44  ESTABLISHED 10.25.1.246:59583  10.25.1.228:25     10.25.1.85:25
TCP 00:33  ESTABLISHED 10.25.1.242:35053  10.25.1.228:25     10.25.1.92:25
TCP 00:58  ESTABLISHED 10.25.1.241:51373  10.25.1.228:25     10.25.1.92:25
TCP 00:18  ESTABLISHED 10.25.1.246:36021  10.25.1.228:25     10.25.1.92:25
TCP 00:33  ESTABLISHED 10.25.1.245:54756  10.25.1.228:25     10.25.1.92:25
TCP 00:24  ESTABLISHED 10.25.1.244:47759  10.25.1.228:25     10.25.1.85:25
TCP 00:59  ESTABLISHED 10.25.1.241:49392  10.25.1.228:25     10.25.1.85:25
TCP 00:30  ESTABLISHED 10.25.1.246:55677  10.25.1.228:25     10.25.1.85:25
TCP 09:02  ESTABLISHED 10.25.1.243:52385  10.25.1.228:25     10.25.1.92:25


--
Joel Nimety
Perimeter Internetworking Corp.
203.541.3416

------------------------------------------------------------------------
This e-mail transmission may contain information that is proprietary,
privileged and/or confidential and is intended exclusively for the
person(s) to whom it is addressed. Any use, copying, retention or
disclosure by any person other than the intended recipient or the
intended recipient's designees is strictly prohibited. If you have
received this message in error, please notify the sender immediately by
return e-mail and delete all copies.

<Prev in Thread] Current Thread [Next in Thread>
  • ActiveConn growing, InActConn always 0, Joel Nimety <=