From: Martin van den Nieuwelaar (martin@gadgets.co.nz)
Date: Tue Aug 20 2002 - 14:32:49 PDT
Hi Rui,
Glad to hear you found the problem. I took a look on my systems as I
wasn't familiar with /proc/sys/kernel/sem. I see it doesn't exist
under RH6.2, but it does under RH7.2. Looking on the Net I see
someone with RH7.1 is referring to it too. So somewhere along the
line there it appears to have been introduced.
A user-friendly way to view the current values is using the ipcs
command. This seems to work on both the newer and older systems.
I don't see a way to set the values if running an old (6.2 for
example) version of RedHat. Anyone else know how?
I see that it's also necessary to set these parameters each time you
boot (typically in one of the rc scripts).
Regards,
-Martin
Rui Bernardino wrote:
>
> Hi,
> While using 'apachectl' I found out it wasn't a 'Cflowd' problem...
> Solved using:
> echo "500 64000 64 256" > /proc/sys/kernel/sem
> which doubles all kernel semaphore parameters...
>
> Thanks anyway.
>
> Regards,
>
> -----Original Message-----
> From: Martin van den Nieuwelaar [mailto:martin@gadgets.co.nz]
> Sent: segunda-feira, 19 de Agosto de 2002 22:40
> To: Rui Bernardino
> Subject: Re: [Cflowd] Semaphore problems (cflowdmux)
>
> Hmm, how about a permissions problem? If you originally installed the
> package as root but are now running it as something else you may not
> have permission to create the socket file in /usr/local/arts/etc/ ...
> Just a thought.
>
> Rui Bernardino wrote:
> >
> > Hi,
> > I'm running Linux (Redhat 7.2); I did look at the semaphore
> > nuances on Solaris but the problem shouldn't apply for Linux.
> >
> > Thanks
> >
> > -----Original Message-----
> > From: Martin van den Nieuwelaar [mailto:martin@gadgets.co.nz]
> > Sent: segunda-feira, 19 de Agosto de 2002 21:55
> > To: Rui Bernardino
> > Subject: Re: [Cflowd] Semaphore problems (cflowdmux)
> >
> > What OS are you running? I remember for Solaris there was a
> > modification required to the /etc/system file to make the shared
> > memory component of CFlowd work.
> >
> > Regards,
> >
> > -Martin
> >
> > Rui Bernardino wrote:
> > >
> > > Hi,
> > > I've been trying to install cflow (+FlowScan) and I get this
> > message everytime I try to launch 'cflowdmux':
> > >
> > > Aug 19 10:53:26 lula cflowdmux[1743]: [I] cflowdmux (version
> > cflowd-2-1-b1) started.
> > > Aug 19 10:53:26 lula cflowdmux[1743]: [I] created 1052672 byte packet
> > queue shmem segment {CflowdPacketQueue.cc:247}
> > > Aug 19 10:53:26 lula cflowdmux[1743]: [I] attached to 1052672 byte
> > packet queue at 0x401e1000
> > > Aug 19 10:53:26 lula cflowdmux[1743]: [E]
> > semget(ftok("/usr/local/arts/etc/cflowd.conf",0),2,IPC_CREAT|S_IRWXU|S_I
> > RWXG|S_IRWXO) failed: No space left on device {CflowdPacketQueue.cc:149}
> > > Aug 19 10:53:26 lula cflowdmux[1743]: [I] created semaphore: id -1
> > > Aug 19 10:53:26 lula cflowdmux[1743]: [E] semop(-1,0xbffff9c0,2)
> > failed to get semaphore: Invalid argument {CflowdPacketQueue.cc:416}
> > >
> > > The 'No space left on device' is quite weird as there is allot
> > of free space on most file systems:
> > > # df -k
> > > Filesystem 1k-blocks Used Available Use% Mounted on
> > > /dev/cciss/c0d0p2 14111760 6228808 7166096 47% /
> > > /dev/cciss/c0d0p1 130377 6034 117611 5% /boot
> > > none 256676 0 256676 0% /dev/shm
> > > /dev/cciss/c0d0p6 18698212 2974196 14774196 17% /var
> > >
> > > I'm using a 'almost default' cflowd.conf (only changed the
> > CISCOEXPORTER part).
> > >
> > > Any help?
> > >
> > > TIA
> > >
> > > _______________________________________________
> > > Cflowd mailing list
> > > Cflowd@caida.org
> > > http://login.caida.org/mailman/listinfo/cflowd
-- Expert carrier network traffic analysis and visualisation http://www.networkintelligence.biz xenaphobia: The fear of being beaten to a pulp by a leather-clad, New Zealand woman_______________________________________________ Cflowd mailing list Cflowd@caida.org http://login.caida.org/mailman/listinfo/cflowd
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