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cbourel
Beginner
Joined: 09 Aug 2004
Posts: 3
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 Posted: Mon Aug 09, 2004 9:07 am Post subject: lockfile under /netmrg/var/log/netmrg |
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Hello,
I'm running Netmrg 0.16 under a Linux box [Fedora Core release 2 (Tettnang) ].
A lock file is created under the /netmrg/var/log/netmrg which prevent netmrg
from running more than 8 hours consequently.
Can you explain me the way this lock file is created so I can check what's goin'on
that server.
Regards,
Christophe. |
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balleman
Site Admin
Joined: 20 Jan 2003
Posts: 282
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| Posted: Mon Aug 09, 2004 5:23 pm Post subject: |
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The lockfile is created using fopen() from the run_netmrg() function in netmrg.cpp.
What are the specific circumstances of your problem? The only time the lockfile should prevent NetMRG from running is when either another instance of NetMRG is running, or a previous instance crashed. The former is the result of NetMRG "stepping on itself" which can occur when monitoring lots of stuff on an overloaded box. The latter would be the result of a bug in NetMRG that we need to track down. If you can find any errors in your NetMRG output (such as in the lastlog.err files that the wrapper script can create), they would be helpful. |
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cbourel
Beginner
Joined: 09 Aug 2004
Posts: 3
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| Posted: Thu Aug 12, 2004 8:10 am Post subject: |
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Hi,
First thanx for your response. Here is the last environment when the lock files
has been created:
------
ps -edf |grep netmrg
netmrg 25662 25661 0 Aug11 00:00:00 /netmrg/bin/netmrg_cron.sh
netmrg 25666 25662 0 Aug11 00:00:00 /netmrg/bin/netmrg-gatherer
netmrg 25667 25666 0 Aug11 00:00:00 sh -c /rrdtool/bin/rrdtool - >/dev/null
netmrg 25668 25667 0 Aug11 00:00:00 /rrdtool/bin/rrdtool
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ls -ltr /netmrg/var/log/netmrg
-rwxrwxrwx 1 nobody nobody 1 Aug 11 15:30 runtime
-rw-r--r-- 1 netmrg netmrg 17 Aug 11 15:35 lockfile
-rwxrwxrwx 1 nobody nobody 0 Aug 11 15:35 lastrun.err
-rwxrwxrwx 1 nobody nobody 510 Aug 11 15:35 lastrun.log
As you can see the lastrun.err file is empty.
The server is currently monitoring 5 boxes and has never been overloaded.
Regards. |
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silfreed
Site Admin
Joined: 19 Jan 2003
Posts: 394
Location: Shippensburg, PA, USA
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| Posted: Fri Aug 13, 2004 3:31 pm Post subject: |
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The permissions in that last directory seem a bit odd; some files are owned by 'nobody', while others are owned by 'netmrg'. Is it possible some cron job is chown-ing the files that this directory is in to nobody at some interval?
-Doug |
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cbourel
Beginner
Joined: 09 Aug 2004
Posts: 3
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| Posted: Tue Aug 17, 2004 8:03 am Post subject: |
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Hi,
I changed the set of permissions but I still get a lock file after a run
of 8 hours:
ls -ltr
total 12
-rwxrwxrwx 1 netmrg netmrg 1 Aug 17 01:15 runtime
-rw-r--r-- 1 netmrg netmrg 17 Aug 17 01:20 lockfile
-rwxrwxrwx 1 netmrg netmrg 0 Aug 17 01:20 lastrun.err
-rwxrwxrwx 1 netmrg netmrg 462 Aug 17 01:20 lastrun.log
I still have no clue.
Regards,
Chris. |
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