Since the head node seems to be receiving data fine from the compute node, I
don't think the switch not passing multicast packets is the problem. Try
turning up the debugging level for gmetad on the head node, and see if the
output gives any clues, if nothing else, it will tell you if and from what
nodes gmetad is receiving data packets from. To turn on debugging edit your
/etc/gmetad.conf file, near the top you should see a variable 'debug_level'
which is set to 0 by default. Setting it to above 0 will keep gmetad in the
foreground when it is started and spit out debug messages to standard
output. You can also do this for the gmond service as well by editing the
/etc/gmond.conf file and turning on debugging in the globals{} section at
the top.
Hopefully that will at least give you an idea of where to start looking for
the problem, let us know.-Milo -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Michael Edwards Sent: Thursday, June 28, 2007 12:50 PM To: oscar-users@lists.sourceforge.net; Bernard Li Subject: Re: [Oscar-users] install on FC5: error in Ganglia We have been getting a fair number of people having problems with ganglia tests failing lately. I have not been able to reproduce the problem myself, so I am not sure where the issue is. Sometimes it breaks because of problems with the /etc/hosts file. Also, what kind of switch are you using? Ganglia likes to (needs to? not sure) use multicast, which is not supported on all switches. On 6/28/07, Filipe Garrett <[EMAIL PROTECTED]> wrote: > > Hi all, > > I've managed to pass the other problem. after installing FC5 I updated > everything (with 'yum update') and it was under that configuration that > the installation script was unable to determine the machine's architecture. > > I've fresh installed FC5 (1 headnode + 1 client) and everything went > smooth. I got to the test phase and every test passed BUT Ganglia!!! In > the ganglia.err file (pasted below) the client (molevol1.ub.edu) looks > OK and so the problem seems to be with the headnode (molevol.ub.edu) > that does not show up in CLUSTER HOSTS. Since it is a small cluster I've > also set the headnode to an execution host (could this be the problem?). > I've also checked for gmond and it is running in all machines. > > thanks in adv, > FG > > > > > > > > > Client nodes: molevol1.ub.edu > Match pattern: molevol.ub.edu|molevol1.ub.edu > Number of hosts matched: 1 > Gstat output: > CLUSTER INFORMATION > Name: MolEvol > Hosts: 1 > Gexec Hosts: 0 > Dead Hosts: 0 > Localtime: Thu Jun 28 17:26:44 2007 > > CLUSTER HOSTS > Hostname LOAD CPU > Gexec > CPUs (Procs/Total) [ 1, 5, 15min] [ User, Nice, System, > Idle, Wio] > > molevol1.ub.edu > 2 ( 1/ 66) [ 0.00, 0.00, 0.00] [ 2.1, 0.0, 0.8, > 97.1, 0.1] OFF > > The number of nodes expected is different from the number of nodes detected. > Check to see if gmond is running on all your nodes and make sure that you > are not having any network issues. > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by DB2 Express > Download DB2 Express C - the FREE version of DB2 express and take > control of your XML. No limits. Just data. Click to get it now. > http://sourceforge.net/powerbar/db2/ > _______________________________________________ > Oscar-users mailing list > Oscar-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/oscar-users > ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Oscar-users mailing list Oscar-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/oscar-users ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Oscar-users mailing list Oscar-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/oscar-users
