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crash dump server for red hat ent 4

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Operating Systems Linux crash dump server for red hat ent 4
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Old 11-19-2008
crash dump server for red hat ent 4
Is it true that you can't have the crash dump server/client on the same server?

I know I've installed Nagios open source before, I though it's only for that kind of thing. I never though that Red hat ent 4 would be like client/server on the crash dump.

if someone is having problem with high file descriptor and your kernel logs doesn't have much or no error at all, the only way the red hat support could analyze your problem is through crash dump and above is the only way. or if you are having problem with your applications and your kernel couldn't tell.


any comments will be highly appreciated?
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LEARN ABOUT REDHAT

netdump-server

NETDUMP-SERVER(8)						  System Programs						 NETDUMP-SERVER(8)

NAME

       netdump-server - handle crash dumps over the network

SYNOPSIS

       netdump-server [--port portnumber]
		[--concurrent number]
		[--pidfile path]
		[--daemon]
		[--help] [--usage]

DESCRIPTION

       Listens	to  the network for clients that crashes and uses the netdump protocol to recieve a memory dump and a stack trace. The memory dump
       and oops message are stored in a timestamped directory in /var/crash.  The server can also run scripts when some events happen.

OPTIONS

       --port portnumber
	      Specifies the IP port number for the netdump server to listen to.  The default is 6666.

       --concurrent number
	      You can limit the amount of concurrent dumps being done at any one time. If more clients than the specified maximum connects at  one
	      time the last ones will just be logged and then rebooted.

       --pidfile path
	      Store a pidfile.	The default service uses /var/run/ttywatch.pid.  The default is not to write a pidfile.

       --daemon
	      ttywatch should background itself and run as a daemon.

EXAMPLES

       netdump-server --daemon
       This launches the netdump-server and puts it in the background, listening for crashed clients.

EXIT STATUS

       Exit status is 0 for a clean exit and non-0 for a non-clean exit.

FILES

       /etc/netdump.conf
	      A  configuration	file  read  by netdump-server on startup. It is a "key=value" style file. Currently it supports the options: port,
	      max_concurrent_dumps, daemon and pidfile.

       /etc/init.d/netdump-server
	      An init script to start a default system installation of netdump-server.	This is normally turned off by default; use the command
	      /sbin/chkconfig netdump-server on
	      to enable the netdump-server service.

       /var/crash
	      The main directory where the crash dump files are stored. Each dump is put in a subdirectory  named  with  the  ip  of  the  crashed
	      machine and the date and time of the crash.

       /var/crash/scripts
	      This  directory  can contain scripts that are run at various times.  They all get passed the ip of the crashing machine as the first
	      argument, and each one except netdump-start gets the directory that the dump is written into as the second argument.

	      netdump-start - This is called when a client connects to the server to tell it that it has just started  the  netdump  client.  This
	      normally means that the machine just booted up.

	      netdump-crash  -	This  is  run  when a client reports that it has crashed.  If it returns a non-zero value the dump request will be
	      ignored and the client will be told to reboot immediately

	      netdump-nospace - This is run when there is not enough diskspace for the dump of the crashed machine. If this script  exits  with  a
	      non-zero return value netdump-server will try once again (but only once) before giving up the dump. If this script exits with a zero
	      return value, netdump-server will reboot the client without performing a dump.

	      netdump-reboot - This is run when netdump-server is finished with a client and is about to tell the client to reboot itself.

SEE ALSO

       netdump(8)

BUGS

       Report any bugs you find to http://bugzilla.redhat.com/bugzilla

AUTHOR

       Alexander Larsson <alexl@redhat.com>

Linux								    14 Feb 2002 						 NETDUMP-SERVER(8)