[imp] Session expiring

[Bjorn Swift]

On Mon, Feb 04, 2002 at 09:33:55PM -0500, Rob Lineweaver wrote:
> On Mon, 2002-02-04 at 12:12, Ramon Kagan wrote:
> > HI,
> > 
> > Any body have any new ideas.  I can't go production when my users will be
> > logged out spontaneously.
> > 
> 
> Ramon,
> 
> I'm no expert here because I've never used LVS but I think that is
> causing the problem.  Doesn't the Linux Virtual Server setup forward
> HTTP requests on to the least busy backend server?  The problem is that
> the PHP sessions are tracked on the server side per server (aren't
> they?... or do they use cookies?), so that you may get lucky and get
> your requests forwarded to the same backend server a couple of times but
> eventually you'll get a server that has no clue about your session, and
> it logs you out.
> 
> I'm just spouting off a wild idea here so someone feel free to correct
> me if i'm wrong.
> 
> Try a setup without LVS and see if it works without logging you out
> spontaneously.
> 
> Rob Lineweaver
> :)

This shouldn't be the case. The following is taken from www.linuxvirtualserver.org:

     .......... and the connection is added into the hash table
     which records connections. Then, the load balancer directly
     forwards it to the chosen server. When the incoming packet
     belongs to this connection and the chosen server can be
     found in the hash table, the packet will be again directly
     routed to the server.

Cheers,
Bjorn Swift



>From doc@zwecker.de Date: 05 Feb 2002 13:54:01 +0100
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From: Christophe Zwecker <doc@zwecker.de>
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Subject: Re: [imp] Imap connection problem with imp3/horde2

sorry, I mean I use imap-2001 not 2000

On Tue, 2002-02-05 at 12:52, Christophe Zwecker wrote:
> Hi,
> 
> I  configured imp to use my own imap server, when  I login with username
> and password I can see this in maillog:
> 
> 
> Feb  5 12:35:47 bender imapd[10039]: imap service init from
> 134.100.58.130
> Feb  5 12:35:47 bender imapd[10039]: Command stream end of file, while
> reading line user=??? host=UNKNOWN
> 
> Logins fails then.
> 
> I installed selfcompiled php4.1.0horde  packages/rpms. I use RH7.2
> with imap-2000
> 
> Someone seens this before ?
> 
> thx for any hints,
> 
> Christophe
> 
> 
> 
> -- 
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>From rlineweaver@harrisonburg.k12.va.us Date: Tue,  5 Feb 2002 08:12:56 -0500
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Date: Tue,  5 Feb 2002 08:12:56 -0500
From: Rob Lineweaver <rlineweaver@harrisonburg.k12.va.us>
To: imp@lists.horde.org, Bjorn Swift <bjorn@olympus.swift.st>
References: <Pine.LNX.4.43.0202041212150.22714-100000@centaur.ccs.yorku.ca> <1012876437.738.15.camel@iggy> <20020205125130.A83128@olympus.swift.st>
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Subject: Re: [imp] Session expiring

Quoting Bjorn Swift <bjorn@olympus.swift.st>:

> This shouldn't be the case. The following is taken from
> www.linuxvirtualserver.org:
> 
>      .......... and the connection is added into the hash table
>      which records connections. Then, the load balancer directly
>      forwards it to the chosen server. When the incoming packet
>      belongs to this connection and the chosen server can be
>      found in the hash table, the packet will be again directly
>      routed to the server.
> 

 
Yes, this in be true *within* an HTTP connection.  The problem is that HTTP 
connections are not persistent.  A connection is made to request a web page and 
usually the TCP connection is closed immediately after the page is recieved and 
a completely new connection is made to get the next web page (which could quite 
easily go to another backend server).

Rob Lineweaver
:)