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Re: [Nagios-users] NRPE: Command 'check_swap' not defined
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From: <tom...@bt...> - 2007-05-02 09:47:49
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Ok Lets take it from the top.
1. About the software you have installed
1a. What OS are you using
1b. What version of Nagios and nagios Plugins are you using?
1c. What version of nrpe are you using?
1d. Is Nagios and the Plugins configured?
1e. If you run nagios -v ./nagios.cfg does it pass the pre-flight check?
1f. What user are you running the check_nrpe command as?
2. On remote nrpe box
2a. Is nrpe defined in /etc/services?
nrpe 5666/tcp Nagios Remote Plugin Executor
2b. Is nrpe defined in inetd/xinetd?
2c. Is nrpe listening to the port
Test_Server_1:~ # netstat -a |grep nrpe
tcp 0 0 *:nrpe *:*
LISTEN
2d. Can you telnet from the nagios host to the remote nrpe port?
nagios@usel:~> telnet Test_Server_1 5666
Trying 132.146.185.160...
Connected to h12oiap.btvsu.net.
Escape character is '^]'
2e. Check the definition of check_swap in your nrpe.cfg file
command[check_swap]=3D/usr/local/nagios/libexec/check_swap -w 30% -c
20%
If all off section 2 is working and you can telnet to the port then nrpe
is configured to listen correctly
3. Checking nagios install on local nagios monitoring host.
3a. Is nagios running?
3b. Does the nagios pre-flight check pass ok
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg
---------<SNIP>--------
Total Warnings: 0
Total Errors: 0
Things look okay - No serious problems were detected during the
pre-flight check
---------<SNIP>--------
3c. Lets look at your /usr/local/nagios/etc/checkcommand.cfg file
Have you specified a check_load or as I like to define different
local and remote
commands check_nrpe_swap in the file above. If you haven't you will
get an error
like you are seeing.
# ' check swap space usage on remote systems
define command{
command_name check_nrpe_swap
command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
}
I have run through the above and when I run the check_nrpe command on
the command line I get the following
nagios@usel:/usr/local/nagios/libexec> ./check_nrpe -H Test_Server_1 -c
check_swap
SWAP OK - 100% free (5137 MB out of 5137 MB)
|swap=3D5137MB;1541;1027;0;5137
And like an epiphany, I just read your post title, it looks like you
need to define the check swap in your checkcommands.cfg file first.=20
Hope this helps.
Tom
-----Original Message-----
From: yu-...@ag... [mailto:yu-...@ag...]=20
Sent: 02 May 2007 10:24
To: Welsh,T,Tom,XSL4A C
Cc: nag...@li...
Subject: RE: [Nagios-users] NRPE: Command 'check_swap' not defined
Hi,
No, I even can't run check_nrpe command successfully in command line.
Below is the running command and output:
-sh-3.00$ ./check_nrpe -H remote_client_name -c check_load=20
NRPE: Command 'check_load' not defined=20
I've turned on the debug in my remote client nrpe.cfg file but no
message outputs to my system log file at all -
/var/adm/syslog/syslog.log. That's also puzzle me. I'm using nrpe.cfg
sample file to config and nrpe daemon is running as below on the client.
nagios 14891 1 0 16:18:47 ? 0:00
/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
Regards,
Yu Ting
-----Original Message-----
From: tom...@bt... [mailto:tom...@bt...]
Sent: Wednesday, May 02, 2007 5:01 PM
To: yu-...@ag...
Cc: nag...@li...
Subject: RE: [Nagios-users] NRPE: Command 'check_swap' not defined
Hi=20
When you run the command manually does it work?
Here is what I get when I run my command
nagios@usel:/usr/local/nagios/libexec> ./check_nrpe -H test_server_1 -c
check_load OK - load average: 1.09, 1.04,
1.01|load1=3D1.090;15.000;30.000;0; load5=3D1.040;10.000;25.000;0;
load15=3D1.010;5.000;20.000;0;=20
Can you run the command and post the output if you are still getting
problems?
Have you turned on debugging on the nrpe.cfg file and looked at the
output when you have ran the command. This is very helpful diagnostic
tool.
Here is the output from /var/log/messages with debug turned on in
nrpe.cfg
May 2 09:59:34 h12oiap nrpe[4469]: Host is asking for command
'check_load' to be run...
May 2 09:59:34 h12oiap nrpe[4469]: Running command:
/usr/local/nagios/libexec/check_load -w 15,10,5 -c 30,25,20 May 2
09:59:34 h12oiap nrpe[4469]: Command completed with return code 0 and
output: OK - load average: 0.17, 0.15, =
0.10|load1=3D0.170;15.000;30.000;0;
load5=3D0.150;10.000;25.000;0; load15=3D0.100;5.000;20.000;0; May 2
09:59:34 h12oiap nrpe[4469]: Return Code: 0, Output: OK - load
average: 0.17, 0.15, 0.10|load1=3D0.170;15.000;30.000;0;
load5=3D0.150;10.000;25.000;0; load15=3D0.100;5.000;20.000;0;
What do you get when you run yours?
Regards
Tom
-----Original Message-----
From: yu-...@ag... [mailto:yu-...@ag...]
Sent: 02 May 2007 09:50
To: Welsh,T,Tom,XSL4A C
Cc: nag...@li...
Subject: RE: [Nagios-users] NRPE: Command 'check_swap' not defined
Hi, all,=20
I just manually run command for testing purpose on my monitor server:
/usr/local/nagios/check_nrpe -H remote_host_name -c check_load
I've not configured it in Nagios configuration files yet.
Regards,
Yu Ting
-----Original Message-----
From: tom...@bt... [mailto:tom...@bt...]
Sent: Wednesday, May 02, 2007 4:36 PM
To: yu-...@ag...; nag...@li...
Subject: RE: [Nagios-users] NRPE: Command 'check_swap' not defined
Is the check load command specified on the nagios monitoring box
Here is how my config is defined.
Remote nrpe box. /usr/local/etc/nrpe.cfg
command[check_load]=3D/usr/local/nagios/libexec/check_load -w 15,10,5 -c
30,25,20
>From nagios monitoring box. /usr/local/nagios/etc/checkcommands.cfg
# ' check load on remote systems using nrpe define command{
command_name check_nrpe_load
command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
}
This works fine for me.
Regards
Tom
-----Original Message-----
From: nag...@li...
[mailto:nag...@li...] On Behalf Of
yu-...@ag...
Sent: 02 May 2007 09:26
To: nag...@li...
Subject: [Nagios-users] NRPE: Command 'check_swap' not defined
Hi,=20
I've run into following NRPE issue.=20
NRPE: Command 'check_load' not defined
I've checked my remote client nrpe.cfg and the command definition is
properly configured there.
command[check_load]=3D/usr/local/nagios/libexec/check_load -w
15,10,5 -c 30,25,20
...
Does anybody know what reason else can cause such issue? Thanks in
advance.
Regards,=20
Yu Ting=20
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