Remote disk check not working

[jnojr]

I want to get remote disk checks going. After much trial and error, I can finally use check_nrpe on the Nagios server to get values. But when I configure Nagios to watch this, I get (null)

I'm guessing this is part of having to use '-a' on the command line. I have no idea how I'm supposed to pass that along in the Nagios config, or why I'd need to... every step along the way, critical functionality (like "dont_blame_nagios") is not set up to begin with, and the only way to find out is by Googling error after error. I haven't been able to find any documentation that spells out all of the steps needed to do this... every example might tell you to do one thing, but assumes you already know all the rest.

[lmiltchev]

Example:

On the remote machine:

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command[check_disk]=/usr/local/nagios/libexec/check_disk $ARG1$

Test check run from the command line on the nagios server:

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[root@localhost ~]# /usr/local/nagios/libexec/check_nrpe -H x.x.x.x -c check_disk -a '-w 10% -c 5% -p /'
DISK OK - free space: / 2821 MB (29% inode=69%);| /=6692MB;8650;9131;0;9612

Hope this helps.

[jnojr]

Example:

On the remote machine:

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command[check_disk]=/usr/local/nagios/libexec/check_disk $ARG1$

Then why is the default in nrpe.cfg:

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command[check_disk]=/usr/local/nagios/libexec/check_disk -w $ARG1$ -c $ARG2$ -p $ARG3$

???

In any case, that didn't help, the service status is complaining about "check_disk: Could not parse arguments" and gives usage.

Test check run from the command line on the nagios server:

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[root@localhost ~]# /usr/local/nagios/libexec/check_nrpe -H x.x.x.x -c check_disk -a '-w 10% -c 5% -p /'
DISK OK - free space: / 2821 MB (29% inode=69%);| /=6692MB;8650;9131;0;9612

That part works perfectly. But there's that '-a'... and I do not see a '-a' in any config or in any example of any config.

[jnojr]

With debugging turned up to 2048, I can see that nagios builds the command to:

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/usr/lib64/nagios/plugins/check_nrpe -H 192.168.2.20 -c check_disk

It doesn't add the -w, -c, or -p parts. In my service definition, I have:

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check_nrpe!check_disk!20%!10%!/

[ssax]

Please post your command definition for check_nrpe in your /usr/local/nagios/etc/commands.cfg.

[jnojr]

Please post your command definition for check_nrpe in your /usr/local/nagios/etc/commands.cfg.

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define command{
     command_name      check_nrpe
     command_line      $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
     }

[ssax]

With the way your check is defined, you should have this:

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$USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$ $ARG2$ $ARG3$

[ssax]

Wait.. sorry.. use this:

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$USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$ -a '-w $ARG2$ -c $ARG3$ -p $ARG4$'

And then you would use this in the nrpe.cfg:

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command[check_disk]=/usr/local/nagios/libexec/check_disk $ARG1$

[jnojr]

Wait.. sorry.. use this:

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$USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$ -a '-w $ARG2$ -c $ARG3$ -p $ARG4$'

And then you would use this in the nrpe.cfg:

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command[check_disk]=/usr/local/nagios/libexec/check_disk $ARG1$

There we go!

So, clearly, this shouldn't be 'check_nrpe', but 'check_nrpe_disks' or something.

[rkennedy]

Nice! Did that get it working for you on your system? Just trying to figure out if we can mark this as resolved.