Bulk loaded hosts, but they are reporting down

[andrewatmacys]

I bulk loaded hosts onto an installation of Nagios XI, but every single one is reporting down. I will attach pictures, it's giving me a strange error I've never encountered before. Please let me know how to fix this so I can run host checks on these servers.

[cdienger]

check_imcp is one of a couple plugins that require special permissions. Doing a "ll /usr/local/nagios/libexec/check_icmp" should show something like:

-rwsrwxr-x 1 root nagios 181827 Jan 26 2017 check_icmp

If you see something different try changing permissions with:

chmod 4775 /usr/local/nagios/libexec/check_icmp
chown root:nagios /usr/local/nagios/libexec/check_icmp

[andrewatmacys]

In performing the above commands, I noticed the rest of the commands in that directory were not owned by Nagios, should they be?

[cdienger]

Most of the other plugins will likely have permissions set to something like:

-rwxrwxr-x. 1 apache nagios 2791 Mar 26 10:35 utils.sh


This is default and okay.

[andrewatmacys]

Unfortunately I am still encountering the same error as before. Should I remove the hosts and reload them?

[cdienger]

Were the permissions set correctly on check_icmp? What's the output of:

ll /usr/local/nagios/libexec/check_icmp

The host can be deleted and recreated but the problem will remain if the permissions are not set. Another option would be to switch to check_ping which effectively does the same job but doesn't require the setuid bit to be set.

[andrewatmacys]

-rwxrwxr-x 1 root nagios 181827 Apr 17 15:11 /usr/local/nagios/libexec/check_icmp

This is the output, it seems correct from the example given earlier.

[cdienger]

There is a slight difference actually. The setuid(the s in -rwsrwxr-x) isn't set. To set it run:

chmod 4775 /usr/local/nagios/libexec/check_icmp