NRPE Command Not Defined

[jnoble921]

Nagios Core: 4.1.1
NRPE Client Verison: NRPE v2.15
Both server and client have CentOS 7 Core installed

I am not able to add new commands to check my NRPE client. I keep getting NRPE: Command 'check_uptime' not defined
From my Nagios server I am testing this by running /usr/local/nagios/libexec/check_nrpe -H <MY HOST> -c check_uptime

However some commands work like, but only the "hard coded" commands. I enabled dont_blame_nrpe = 1
/usr/local/nagios/libexec/check_nrpe -H <MY HOST>
/usr/local/nagios/libexec/check_nrpe -H <MY HOST> -c check_total_procs
/usr/local/nagios/libexec/check_nrpe -H <MY HOST> -c check_users

The check_total_procs will not let me change the warning or cirtical threshold however.

I think that I have added the command to my client, /usr/local/nagios/etc/nrpe.cfg
command[check_uptime]=/usr/local/nagios/libexec/check_uptime

I do not know if this is of any help but this is the guide that I followed. http://www.tecmint.com/how-to-add-linux ... ng-server/

I am sure that I am missing something simple and that this gets asked a lot but I would really appreciate any help. Please let me know if there is other information that I can provide.

[hsmith]

What method did you use to install NRPE?

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find / -name common.cfg -exec cat {} \;

[jnoble921]

I found the tutorial at http://www.tecmint.com/how-to-add-linux ... ng-server/, if that is what you mean by method. Please let me know if that is not and I will try and help.

I ran the command you posted on both my server and client. Below is the return on my client. There was no return on my server.

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find / -name common.cfg -exec cat {} \;
find: ‘/run/user/1000/gvfs’: Permission denied

### GENERIC SERVICES ###
command[check_init_service]=sudo /usr/local/nagios/libexec/check_init_service $ARG1$
command[check_services]=/usr/local/nagios/libexec/check_services -p $ARG1$

### MISC SYSTEM METRICS ###
#command[check_users]=/usr/local/nagios/libexec/check_users -w 5 -c 10
command[check_users]=/usr/local/nagios/libexec/check_users $ARG1$
command[check_load]=/usr/local/nagios/libexec/check_load $ARG1$
command[check_swap]=/usr/local/nagios/libexec/check_swap $ARG1$
command[check_cpu_stats]=/usr/local/nagios/libexec/check_cpu_stats.sh $ARG1$
command[check_mem]=/usr/local/nagios/libexec/custom_check_mem -n $ARG1$

### SYSTEM UPDATES ###
command[check_yum]=/usr/local/nagios/libexec/check_yum
command[check_apt]=/usr/local/nagios/libexec/check_apt

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

### PROCESSES ###
command[check_all_procs]=/usr/local/nagios/libexec/custom_check_procs
command[check_procs]=/usr/local/nagios/libexec/check_procs $ARG1$

### OPEN FILES ###
command[check_open_files]=/usr/local/nagios/libexec/check_open_files.pl $ARG1$

### NETWORK CONNECTIONS ###
command[check_netstat]=/usr/local/nagios/libexec/check_netstat.pl -p $ARG1$ $ARG2$
### GENERIC SERVICES ###
command[check_init_service]=sudo /usr/local/nagios/libexec/check_init_service $ARG1$
command[check_services]=/usr/local/nagios/libexec/check_services -p $ARG1$

### MISC SYSTEM METRICS ###
#command[check_users]=/usr/local/nagios/libexec/check_users -w 5 -c 10
command[check_users]=/usr/local/nagios/libexec/check_users $ARG1$
command[check_load]=/usr/local/nagios/libexec/check_load $ARG1$
command[check_swap]=/usr/local/nagios/libexec/check_swap $ARG1$
command[check_cpu_stats]=/usr/local/nagios/libexec/check_cpu_stats.sh $ARG1$
command[check_mem]=/usr/local/nagios/libexec/custom_check_mem -n $ARG1$

### SYSTEM UPDATES ###
command[check_yum]=/usr/local/nagios/libexec/check_yum
command[check_apt]=/usr/local/nagios/libexec/check_apt

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

### PROCESSES ###
command[check_all_procs]=/usr/local/nagios/libexec/custom_check_procs
command[check_procs]=/usr/local/nagios/libexec/check_procs $ARG1$

### OPEN FILES ###
command[check_open_files]=/usr/local/nagios/libexec/check_open_files.pl $ARG1$

### NETWORK CONNECTIONS ###
command[check_netstat]=/usr/local/nagios/libexec/check_netstat.pl -p $ARG1$ $ARG2$

Thank you so much for replying!

[hsmith]

Server should not have had an output, so that is good. Can you try some of the commands listed in that common.cfg and see if they work?

[jnoble921]

Server should not have had an output, so that is good. Can you try some of the commands listed in that common.cfg and see if they work?

I am sorry, I am not sure what you mean. If I run those commands from my client they seem to work fine like, /usr/local/nagios/libexec/check_yum, OS is up to date. check_uptime etc

However once I check them from server that is where the issue appears to be.

Please let me know what I can do to help more diagnose this! Thank you so much.

[hsmith]

From the server, if you run /usr/local/nagios/libexec/check_nrpe -H <your host> -c check_yum for example, does it return anything?

How about this scenario? su to the nagios user, and try to run the plugin locally.

[jnoble921]

From the server, if you run /usr/local/nagios/libexec/check_nrpe -H <your host> -c check_yum for example, does it return anything?

How about this scenario? su to the nagios user, and try to run the plugin locally.

From the monitoring server that is running "nagios"

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su nagios
[nagios@nagios /]$ /usr/local/nagios/libexec/check_nrpe -H 192.168.1.52 -c check_yum
NRPE: Command 'check_yum' not defined

Some stuff does work

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[nagios@nagios /]$ /usr/local/nagios/libexec/check_nrpe -H 192.168.1.52 -c check_total_procs
PROCS CRITICAL: 215 processes | procs=215;150;200;0;

I am sorry EDIT

From the machine that I want to monitor

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[nagios@localhost jnoble]$ /usr/local/nagios/libexec/check_nrpe -H 127.0.0.1 -c check_yum
NRPE: Command 'check_yum' not defined
[nagios@localhost jnoble]$

[hsmith]

What are the permissions of /usr/local/nagios/etc/nrpe/common.cfg?

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ls -l /usr/local/nagios/etc/nrpe

edit:

Try this command on the machine you want to monitor

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/usr/local/nagios/libexec/check_yum

Like you did in the previous post. Leave check_nrpe out of it for now, if that makes sense.

[jnoble921]

What are the permissions of /usr/local/nagios/etc/nrpe/common.cfg?

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ls -l /usr/local/nagios/etc/nrpe

edit:

Try this command on the machine you want to monitor

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/usr/local/nagios/libexec/check_yum

Like you did in the previous post. Leave check_nrpe out of it for now, if that makes sense.

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[[email protected] jnoble]$ ls -l /usr/local/nagios/etc/nrpe
total 8
-rw-r--r--. 1 nagios nagios  687 Nov 16 14:10 asterisk.cfg
-rw-r--r--. 1 nagios nagios 1309 Nov 16 14:10 common.cfg

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[[email protected] jnoble]$ /usr/local/nagios/libexec/check_yum
YUM OK:  O/S is up to date.

192.168.1.52 is the server that I want to monitor
192.168.1.54 OR nagios is my main server
Information that may have been helpful sooner but I wanted to make sure that is clear maybe

[lmiltchev]

On the 192.168.1.52 box, run:

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service xinetd restart

On the 192.168.1.54 box, run:

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/usr/local/nagios/libexec/check_nrpe -H 192.168.1.52 -c check_yum

and show the output.

Also, post the entire nrpe.cfg and common.cfg file.