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Once the time out value has been increased connections remain until that
time out occurs. Any suggestions of forcing the timeout period to end aka
resetting the MASQ table?
Michael
> If you have unlimited resources, then you will be able to
> configure infinite timeout. Each connection takes a little
> bit of memory. We found at 10 hours, that is already
> stretching -- all the connections in last 10 hours taking
> quite bit of memory. Since no one can have unlimited
> resources in one computer, I don't think infinite timeout
> can be done easily.
>
> At 02:22 PM 10/5/2001 -0700, Michael McConnell wrote:
> >How about an Infinite timeout?
> >
> >
> >----- Original Message -----
> >From: "Wayne" <wayne@xxxxxxxxxxxxxxx>
> >To: <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>;
<lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
> >Cc: <kodland@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> >Sent: Friday, October 05, 2001 9:28 AM
> >Subject: Re: LVS Timeouts
> >
> >
> >> Julian had posted answer about two years ago:
> >> > > > to alter this timeout value to something > 8 hours to avoid flak
> >from
> >> > > > users.
> >> > >
> >> > > On the director:
> >> > >
> >> > > ipchains -M -S 36000 0 0
> >> > >
> >> > > 36000 is 10 hours TCP timeout. man ipchains. You can try
> >> > > with different value.
> >> >
> >> >
> >>
> >> At 12:19 PM 10/5/2001 -0400, mack@xxxxxxxxxxxx wrote:
> >> >On Fri, 5 Oct 2001, Kris Odland wrote:
> >> >
> >> >> Here's whats going on. We are using LVS for load balancing imap
> >servers,
> >> >> we have the tunneling option set up so the individual servers reply
to
> >> >> the client.
> >> >
> >> >I don't have an answer, but I do have some more questions..
> >> >
> >> >I assume all the imap realservers are writing to one common
filesystem?
> >> >
> >> >> We are seeing a problem if you have your email client set up to copy
> >> >> sent messages to a "Sent" folder on the imap server. The client
opens
> >> >> a seperate connection to the imap server for the sent folder.
> >> >
> >> >Is this to the same VIP:port as the first connection?
> >> >
> >> >If it's different, you could be connecting to a different realserver
> >> >than for the first imap connection. Is this a problem?
> >> >
> >> > The
> >> >> problem is if you are typing a message and you have it open for a
while
> >> >> (20 or 30 minutes) the imap connection for the sent folder is timed
> >out.
> >> >> It tries sending it through the old connection (port) and gets "Port
> >> >> Unreachable" error from the imap server (not the LVS server) when it
> >tries
> >> >> copying the message to sent mail. It will re-open the connection
after
> >a
> >> >> bit, but not when it is trying to to the sent mail thing.
> >> >
> >> >The tcp connection through the director will be dropped in about
15mins
> >> >(depending on your kernel).
> >> >
> >>
>
>>http://www.linuxvirtualserver.org/Joseph.Mack/HOWTO/LVS-HOWTO-11.html#ss11
.
> >30
> >> >
> >> >> It seems that after 30 minutes the imap server sends a "BYE" message
> >> >> because it has been idle too long, and it does an autologout for the
> >> >> corresponding folder. This should be followed by a FIN, and then
ACK
> >from
> >> >> the client. In this case the ACK is not making it to the server,
but
> >> >> being rejected with "Port Unreachable" messages, so the server keeps
on
> >> >> trying to close the connection.
> >> >
> >> >I would assume this is because the director has already dropped the
link
> >> >(look at the output of ipvsadm if you can do it with a machine and
only
> >> >one connection and you can sit around and wait - you could reduce the
> >> >tcp timeout as listed above to speed things up a bit).
> >> >
> >> >
> >> >Joe
> >> >
> >> >--
> >> >Joseph Mack, mack@xxxxxxxxxxxx
> >> >Linux Virtual Server project
> >> >http://www.linuxvirtualserver.org
> >> >
> >> >
> >> >_______________________________________________
> >> >LinuxVirtualServer.org mailing list - lvs-users@xxxxxxxxxxxxxxxxxxxxxx
> >> >Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
> >> >or go to http://www.in-addr.de/mailman/listinfo/lvs-users
> >>
> >>
> >> _______________________________________________
> >> LinuxVirtualServer.org mailing list - lvs-users@xxxxxxxxxxxxxxxxxxxxxx
> >> Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
> >> or go to http://www.in-addr.de/mailman/listinfo/lvs-users
> >>
> >
> >
> >_______________________________________________
> >LinuxVirtualServer.org mailing list - lvs-users@xxxxxxxxxxxxxxxxxxxxxx
> >Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
> >or go to http://www.in-addr.de/mailman/listinfo/lvs-users
>
>
> _______________________________________________
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> Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
> or go to http://www.in-addr.de/mailman/listinfo/lvs-users
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