Unable to activate the check_ro_mount service

[IT-OPS-SYS]

downloaded the perl file from the : https://exchange.nagios.org/directory/P ... ts/details

kept the file under: /usr/local/nagios/libexec

chmod 777 check_ro_mount.pl
chown nagios check_ro_mount.pl

when I am trying to run the script on the nagios server, output below

[root@cvrmnagiosxi001 libexec]# ./check_ro_mount.pl
RO_MOUNTS CRITICAL: Found ro mounts: /sys/fs/cgroup

I created the command in the nagios and then created service with the available plugin: check_ro_mount.

after adding the service to one of the host, i see the below error in nagios GUI :

execvp(check_ro_mount, ...) failed. errno is 2: No such file or directory.

any help on how to use the check_ro_mount will be appreciated.

[scottwilkerson]

execvp(check_ro_mount, ...) failed. errno is 2: No such file or directory.

when you created the command in Nagios did you forget to add the .pl to the command? The error is looking for check_ro_mount but your plugin name is check_ro_mount.pl

Can you share the command you created in Nagios?

[IT-OPS-SYS]

my command is ./check_ro_mount.pl and I have made the command as ./check_ro_mount.pl.

when I run this command in nagios server I get the below output:

[root@cvrmnagiosxi001 libexec]# ./check_ro_mount.pl
RO_MOUNTS CRITICAL: Found ro mounts: /sys/fs/cgroup

but in the services we see the same error : (No output on stdout) stderr: execvp(/usr/local/nagios/libexeccheck_ro_mount.pl, ...) failed. errno is 2: No such file or directory.

Do you have a sample command for this plugin, do let me know so that I can replicate the same.

[scottwilkerson]

but in the services we see the same error : (No output on stdout) stderr: execvp(/usr/local/nagios/libexeccheck_ro_mount.pl, ...) failed. errno is 2: No such file or directory.

This looks closer, it looks like you are missing a forwardslash

Code: Select all

$USER1$/check_ro_mount.pl

[IT-OPS-SYS]

after adding the slash it worked for me. thanks
can you help me with the command (check_ro_mount) for checking the read only machines alert/service in Nagios.

[scottwilkerson]

after adding the slash it worked for me. thanks

Great!

can you help me with the command (check_ro_mount) for checking the read only machines alert/service in Nagios.

Not really sure what you mean by this? Are you looking to add this plugin to other machines to monitor with an agent such as NRPE?

[IT-OPS-SYS]

yes that is what i am looking for. how can i use this plugin ./check_ro_mount.pl to monitor the other servers in the group.

i have nrpe on the guest and can we integrate the check_ro_mount with nrpe, if yes then how can we do that.

[scottwilkerson]

You would need to install the plugin on each of the machines, then add something like the following to the nrpe.cfg

Code: Select all

command[check_ro_mount]=/usr/local/nagios/libexec/check_ro_mount.pl

then restart NRPE on the remote server

then from XI you can run the NRPE wizard and set the Remote NRPE Command to check_ro_mount

OR

Setup a new service in the CCM, use the check_nrpe command and ser $ARG1$ to check_ro_mount

[IT-OPS-SYS]

is there any way other then installing the plugin to all the remote machines as we have more then 300 remote machine.

[lmiltchev]

Unfortunately, the plugin is needed on the clients in order for you to be able to call it via check_nrpe from the Nagios XI server. Having said that, you could use some kind of mass deployment tool to install the plugin on the remote boxes, such as Ansible.