Nagios Support Forum

Hi when i'm using NRPE i'm getting the folowing error
NRPE: Unable to read output
the commands its using are

check_nrpe!check_disk!-a '-w 20% -c 10% -p /'
check_nrpe!check_open_files!-a '-w 30 -c 50'
check_nrpe!check_swap!-a '-w 50 -c 20'
check_nrpe!check_procs!-a '-w 150 -c 250'
check_nrpe!check_users!-a '-w 5 -c 10'

For all the above commands i'm getting the same error

Please help me out

What happens when you run the command from the command line, for example:
What about the output of this:
and Run on the client (target machine):
and post the output.

Did you run the NRPE agent install on the host to be monitored?

Yes, you install the NRPE agent on the client (target machine). Here is the document you need to look at:

http://library.nagios.com/library/produ ... inux-agent

If you ran the installer, but got some errors (dependencies, etc.), you can re-run it. By the end of the installation, you will be asked to enter the IP of you Nagios server.

Hope this helps.

# cd /usr/local/nagios/libexec
# ./check_nrpe -H <your_target_machine_IP_address> -c check_disk -a '-w 20% -c 10% -p /'

output is NRPE: Unable to read output

# ./check_nrpe -H localhost

Output is NRPE v2.12

# ./check_nrpe -H <your_target_machine_IP_address>

Output is NRPE v2.12

lmiltchev wrote:Yes, you install the NRPE agent on the client (target machine). Here is the document you need to look at:

http://library.nagios.com/library/produ ... inux-agent

If you ran the installer, but got some errors (dependencies, etc.), you can re-run it. By the end of the installation, you will be asked to enter the IP of you Nagios server.

Hope this helps.

Thanks your suggestion has worked but does this working for Unregistered RHEL 4.0 ??

I have test machine with RHEL 4.0 (unregistered) , thinking to give a try does it work ???

I'm pretty sure you'll need to register with RHN, the package requires the use of "yum update."