Re: webmin-0.990-1 spawns several processes and locks server

[Andrew K. <ak...@ra...>]

No, most of the servers have RedHat 7.0, and some have 7.2.
One is 6.2. The problem server uses 7.0. No modifications
were made except for various security updates which were
replicated across all the servers.

-Andrew
----- Original Message -----
From: "Jamie Cameron" <jca...@we...>
To: <web...@li...>
Sent: Wednesday, September 11, 2002 5:02 AM
Subject: Re: webmin-0.990-1 spawns several processes and locks server


> Interesting .. is there any different between the working and
> non-working servers, such as a different distribution or kernel version?
>
>   - Jamie
>
> Andrew Kornak wrote:
>
> > Jamie,
> >
> > I am connecting to a server from a remote location on the internet.
> > I have a broadband internet service provider and the server is on
> > a T1. No delays between myself and any servers I connect to.
> > I have other servers with webmin running on the same network
> > without any problems.
> >
> > -Andrew
> > ----- Original Message -----
> > From: "Jamie Cameron" <jca...@we...>
> > To: <web...@li...>
> > Sent: Tuesday, September 10, 2002 11:22 PM
> > Subject: Re: webmin-0.990-1 spawns several processes and locks server
> >
> >
> >
> >>Joe Cooper wrote:
> >>
> >>
> >>>Goodness!  That's not the same issue I'm seeing at all.  That's crazy
> >>>talk, Andrew!
> >>>
> >>>I think you must have a very badly behaved module on your hands.  How
> >>>about doing a Webmin session without touching any non-standard modules
> >>>and seeing what happens.  I can't imagine any of the standard modules
> >>>would behave that way.
> >>>
> >>
> >>I have heard from others with this problem, and they are just using
> >>
> >>the standard webmin with no extra modules.. It seems to be a problem
with
> >>
> >>miniserv.pl , not with the module code. The annoying thing is that
> >>
> >>I have been able to connect to the machines of people who had the
problem,
> >>
> >>without triggering it myself!
> >>
> >>That leads me to suspect that it is browser or maybe network-latency
> >>
> > related.
> >
> >>Andrew - what kind of connection is there between your browser and the
> >>
> > webmin
> >
> >>server? Are they on the same machine, connected via a LAN, on over the
> >>internet?
> >>
> >>
> >>
> >>>The problem I've seen is pretty controllable--and only leads to big
> >>>trouble with one of my own modules (my troublemaker accesses a number
of
> >>>remote servers and gathers information from them, and then reloads
after
> >>>30 seconds and does it all over again infinitely many times).  I have
> >>>never seen a Webmin go evil like that before.
> >>>
> >>
> >>In your case, you might want to try disabling keep-alives in webmin,
which
> >>will return it to the one-process-per-request behaviour. You can do this
> >>by adding the line nokeepalive=1 to /etc/webmin/miniserv.conf and then
> >>re-starting.
> >>
> >>I'm going to look into a patch to have miniserv.pl proceses exit after
10
> >>minutes, even if the client browser is till connected. It's tricky
though,
> >>as IE can get annoyed sometimes if the server just disconnects like
that.
> >>
> >>  - Jamie
> >>
> >>
> >>
> >>
> >>>Andrew Kornak wrote:
> >>>
> >>>
> >>>>This might be a good short-term fix, except, my server spawns several
> >>>>webmin processes in short order which brings the server down in about
> >>>>5-10 seconds (not minutes). Initially, I thought perhaps I was short
of
> >>>>memory. I added memory and webmin sucked it right up. Not a memory
> >>>>problem.
> >>>>
> >>>>-Andrew
> >>>>----- Original Message -----
> >>>>From: "Joe Cooper" <jo...@sw...>
> >>>>To: <web...@li...>
> >>>>Sent: Tuesday, September 10, 2002 9:41 PM
> >>>>Subject: Re: webmin-0.990-1 spawns several processes and locks server
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>>This one is a weird issue, and one that I've seen quite a few times
> >>>>>
> > now,
> >
> >>>>>but haven't reproduced it lately myself (but I still have a client
> >>>>>
> > that
> >
> >>>>>can trigger it on his machine--while I cannot).
> >>>>>
> >>>>>I was able to make it happen in the past with Netscape 6.0, but these
> >>>>>days, neither Mozilla or current Netscape makes it happen for me.
> >>>>>Another client /always/ has about 25 Webmin processes on his machine,
> >>>>>and I don't know where they're coming from.  Darnedest thing I've
seen
> >>>>>in a while...
> >>>>>
> >>>>>Jamie, would it be possible to get a forced timeout on child
> >>>>>
> > miniserv.pl
> >
> >>>>>processes if they don't do something for some number of minutes?  It
> >>>>>
> > is
> >
> >>>>>just a simple 'process per connection' server, isn't it?  I know that
> >>>>>webmin spawning processes that don't end can cause it to hang around,
> >>>>>but if after 5 minutes something hasn't returned, the browser has
> >>>>>probably timed out the request already anyway.  So no use waiting for
> >>>>>
> > a
> >
> >>>>>long process if there will be no one around to see it finish.  Just a
> >>>>>thought.
>
>
>
>
>
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