Cannot write to pidfile

[sirampadu]

I've been battling with setting up Nagios on my RHEL 7 environment for some time now but no luck. My current issue is, when i restart NRPE, in # journalctl -n i get Cannot write to pidfile /var/run/nrpe/nrpe.pid - check your privileges
when i run # grep pid /etc/nagios/nrpe.cfg

output is pid_file=/var/run/nrpe/nrpe.pid

I proceed to see what in that directory but there is no nrpe in /var/run, which means nrpe is not created in /var/run.
Find -name nrpe.pid returns nothing.

ls -la /etc/xinetd.d/nrpe returns
-rw-r--r-- 1 root root 429 Jul 25 14:50 /etc/xinetd.d/nrpe
to check what type of nrpe i configured

All helps are definitely welcomed.

[bolson]

Hello sirampadu,

How did you install NRPE? It would appear to be xinetd... How are you restarting nrpe?

[sirampadu]

systemctl restart nrpe

[tmcdonald]

Please answer all of our questions so we can better assist you:

How did you install NRPE? It would appear to be xinetd...

[sirampadu]

I downloaded the nrpe-3.2.0. tar.gz , then i extracted it with tar -xzf. Proceeded nrpe-3.2.0 then ran the installation from there. I'm restarting nrpe with "
systemctl restart nrpe"

Yes it is with xinetd

[bolson]

the proper way to start/restart your version of nrpe is by starting or restarting the xinetd service. Ie: systemctl start xinetd

Let me know if this resolves your issue.

[sirampadu]

Status on Xinetd is active. Should status on nrpe be active or inactive since Xinetd is running?

i ran this command to see if there is communication between client and host
#/usr/local/nagios//libexec/check_nrpe -H hostname -t 30 -c check_users -a '-w 5 -c 10'

is that a correct command to use since I'm using xinetd?

[bolson]

You can run the following command to confirm that nrpe is running:

Code: Select all

telnet localhost 5666

If it's running, execute the following from the cli on your Nagios Core server:

Code: Select all

/usr/local/nagios/libexec/check_nrpe -H ip_addr_of_host_to_monitor -c check_mem '-a -w 20 -c 10'

Let me know if you have additional questions.

[sirampadu]

telnet localhost 5666
Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused


/usr/local/nagios/libexec/check_nrpe -H host_name -c check_mem '-a -w 20 -c 10'
CHECK_NRPE: Error - Could not connect to host_name: Connection reset by peer

[bolson]

NRPE is not running. Please copy and paste the contents of /etc/xinetd.d/nrpe

Thank you.