This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


[Xen-users] tcp connections bewteen domUs woes

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] tcp connections bewteen domUs woes
From: Thomas <iamkenzo@xxxxxxxxx>
Date: Wed, 22 Jul 2009 17:50:07 +0200
Delivery-date: Wed, 22 Jul 2009 08:50:54 -0700
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:content-type:content-transfer-encoding; bh=rpb3G9cRTleDjJhgbCgd+GbtJRhEhoS7LUE1ldOubpY=; b=Nad6ec9ZTTHO7Kzes6TmNso4j3rXvMSjWsIf3+iOqi5ropmbmAEPb29XSAGBPeUyR8 BoVEYm1qoDFKnH1mMS1wJ3s2HP5uEEvjpQtQlqtb0GERxd9cL5mV+1WCUF5V+1jI2K1+ 7JcPrMy6qdMm3e8gBeNAAo0ptfrBmZV0rgWQ0=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type :content-transfer-encoding; b=HFMaBGd/SYwq+6E9m4Um6CF2cdYYplR5sq1Cr/USsJva025wC+hPPlhguJfqW3vAOW LB1PJlfXg1lBmRv2QAHnPKMM87VU5hJuApGvCk5jkDn+aOYWKnVvL6auogF59C0WLYQz yOeJLsefD/hIPw4Pq8CgvQ26LE0RXaHHleHkA=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx

I have 2 domUs communicating between, each other. One has Nginx
running that processes all incoming requests, if it's a static file,
it serves it directly, if it's a dynamic request, it then proxy_pass
the request to a Rails app hosted on another domU. For a few days now,
I am experiencing some problems between these 2 domUs. Here is a
picture of the problem:

$ netstat -anp
Proto Recv-Q Send-Q Local Address           Foreign Address
State       PID/Program name
tcp     1239      0  CLOSE_WAIT -
tcp        1      0  CLOSE_WAIT -
tcp     1107      0  CLOSE_WAIT -
tcp     1239      0  CLOSE_WAIT -
tcp     1152      0  CLOSE_WAIT -
tcp     1152      0  CLOSE_WAIT

Connection never close and will keep adding. At some point in time all
running processes of my Rails app will get stuck and my application
will become unreachable. Any idea where that could come from?

Xen-users mailing list

<Prev in Thread] Current Thread [Next in Thread>
  • [Xen-users] tcp connections bewteen domUs woes, Thomas <=