Re: (ASCEND) Ascend, ~raddb/logfile error messages

[Lasse Andersson <lasse@netcraft.se>]

Great, we will try this out.  

We had the possibiility to do some optimization in the users file, so in the
short term the problem is solved.

Thanks,

Lasse


> Ok, if you are already using the dbm version, then you may have an overload 
> problem on the machine where you run the radius server.
> The error message 'Warning: backlog of 103 exceeds 100 requests' means that 
> there are 103 pending requests. The RADIUS server needs
> to keep these requests for a while in case it has to retransmit the
> response again. You can experiment by changing the value 
> REQUESTS_BACKLOG_THRESHOLD, but my guess is that your machine
> is running out of steam.
> 
> The other message indicates a contention error in your dbm.
> "Couldn't open /etc/raddb/users for reading" may indicate a contention error 
> in your dbm. This may be caused by too many
> open files. Try changing the maximum number of open files.
> If you are running under Linux, you can try this:
>   echo 8000 > file-max
>   echo 20000 > inode-max
> 
> The other thing to check is whether you have too many retransmissions. That 
> may indicate a connectivity problem.
> 
> Lastly but not least, you may want to try a better RADIUS server.
> -J
> 
> >From: Lasse Andersson <lasse@netcraft.se>
> >To: Joe Max <max_and_tnt@hotmail.com>
> >CC: ascend-users@max.bungi.com
> >Subject: Re: (ASCEND) Ascend, ~raddb/logfile error messages
> >Date: Mon, 31 Jan 2000 10:02:46 +0100 (MET)
> >
> >We are using dbm today already.
> >Do you know where to find better explanations of the error messages we are
> >getting ?.
> >That would make decisions to put in more servers easy.
> >
> >Regards
> >
> >Lasse
> >
> >
> > > It sounds to me that you need to either migrate to a better RADIUS 
> >server or
> > > at least, start using the DBM based code.
> > >
> > > >From: Lasse Andersson <lasse@netcraft.se>
> > > >
> > > >We are using Ascend 1.16 and in the logfile (~raddb/logfile) fills up 
> >with
> > > >quite a lot of these messages from time to time :
> > > >
> > > >Thu Jan 27 09:52:32 2000: Warning: backlog of 103 exceeds 100 requests
> > > >Thu Jan 27 09:52:32 2000: Warning: backlog of 104 exceeds 100 requests
> > > >Thu Jan 27 09:52:32 2000: Warning: backlog of 105 exceeds 100 requests
> > > >
> > > >All authentication and accounting is done through proxy radius servers
> > > >driven by another organisation.
> > > >
> > > >The explanation in the source code that generates the message is this :
> > > >
> > > >/* Scan our list of pending requests (authentication, accounting, and
> > > >    address allocation).  Weed out requests that have died of old age.
> > > >    If the given AUTHREQ is already on our list, retransmit our reply
> > > >    if we have one, and discard the request as a duplicate if we don't
> > > >    yet have a reply.  If we spawned a child to handle the request,
> > > >    send it a SIGHUP every time the duplicate request arrives here,
> > > >    prompting the child to retransmit the reply.  If the request was a
> > > >    duplicate which we handled as above, return TRUE to notify our
> > > >    caller that no further action is required.  */
> > > >
> > > >* Is this due to overload in our radius server or should we increase
> > > >backlog or
> > > >is this normal for 100000+ accounts or we in some kind of trouble?.
> > > >
> > > >
> > > >In the ~raddb/logfile we also get quite a lot of two other messages :
> > > >
> > > >Thu Jan 27 10:24:06 2000: ~radius/bin/radiusd:Couldn't open \
> > > >/etc/raddb/users for reading
> > > >
> > > >Thu Jan 27 10:24:06 2000: Authenticate: machine.net.net1645, \
> > > >id=68: Missing Radius Users File: joe.user@company.com
> > > >
> > > >* The users file exist and the user is a legitime user, but this 
> >messages
> > > >keep coming up?.
> > > >
> > > >
> > > >Would be great hear some comments on this.
> > > >
> > > >
> > > >Kindly
> > > >
> > > >Lasse Andersson
> > > >
> >
> >
> >
> 

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