[Nagiosplug-help] check_disk and DRDB

[Andreas Ericsson]

Justin Maloney wrote:
> First time poster so cut me a little slack.  
> 
>  
> 
> Maybe I'm just dumb but I can't figure this out. I'm root and do a df
> then try to check the 3 mounts to see what space is avaliale. I want /,
> /boot, and /var/lib/mysql. Background - drbd is basically netowork
> raid1. I'm trying this on the primary as the secondary doesn't get
> mounted till the first goes down. 
> 
> [root at mysql-1b ~]# df
> Filesystem 1K-blocks Used Available Use% Mounted on
> /dev/cciss/c0d0p3 10317860 2405388 7388352 25% / <-slash
> /dev/cciss/c0d0p1 101086 20181 75686 22% /boot
> /dev/drbd0 92368656 19834760 67841840 23% /var/lib/mysql
> 
> So you would think the command would be -
> [root at mysql-1b ~]# /usr/lib64/nagios/plugins/check_disk -w 15% -c 10% -p
> /dev/cciss/c0d0p1 /dev/cciss/c0d0p3 -p /dev/drbd0
> Results
> DISK OK - free space: /boot 73 MB (78% inode=99%); / 7215 MB (75%
> inode=92%);| /boot=19MB;83;88;0;98 /=2349MB;83;88;0;10076
> 
> So lets try with the actaull path.
> [root at mysql-1b ~]# /usr/lib64/nagios/plugins/check_disk -w 15% -c 10% -p
> /dev/cciss/c0d0p1 /dev/cciss/c0d0p3 -p /dev/cciss/c0d0p2
> Results
> DISK OK - free space: /boot 73 MB (78% inode=99%); / 7215 MB (75%
> inode=92%);| /boot=19MB;83;88;0;98 /=2349MB;83;88;0;10076
> 
> In both cases I don't get the drbd mount. Any thoughts?
> 

Yes. Look closely at your command-line and you'll notice you've
specified /dev/cciss/c0d0p3 without a -p in front of it.
I'd have expected check_disk to barf on this, since it's not
a valid argument on its own (as it lacks the preceding -p),
but apparently it doesn't. Add the -p or remove the /dev/cciss/c0d0p3
and you should be fine.

-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Tel: +46 8-230225                  Fax: +46 8-230231