Nagios Support Forum

Hi,

I'm trying to get the AWS cloudwatch_status plugin to work and I've installed all the packages necessary for the plugin (ruby and the dependencies in this case).
I'm able to run the cloudwatch command from the the cli using 'root' and 'nagios' users. However, I coundn't get the plugin working in the UI.

When I run normally with either nagios or root user, it ruturns the status without any errors:
ruby /usr/local/nagios/libexec/check_cloudwatch_status.rb -a XXXXXXXX -i "i-XXXXXX" -C CPUUtilization -f /usr/local/nagios/etc/aws_credentials.cfg

But the same thing does not work in the Nagios UI:
Also checked with 'sudo -u nagios', doesn't work.
sudo -u nagios ruby /usr/local/nagios/libexec/check_cloudwatch_status.rb -a XXXXXXXX -i "i-XXXXXX" -C CPUUtilization -f /usr/local/nagios/etc/aws_credentials.cfg

I get the warning message in "Status Information" in the UI:
(No output on stdout) stderr: /usr/local/rvm/rubies/ruby-2.4.1/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- fog (LoadError)

fog and fog-aws packages are installed and works well from the cli.

BR,
Sujan

Check line 55 in the file named in the error.

Run the following commands and post the result:

how do you have this defined in Nagios XI? can you post a screenshot?

Hi All,

Thanks for your replies.

I've tried different permissions but it didn't help at all. Here are the current permissions for the files:
-rwxrwxr-x. 1 apache nagios 258 10.10. 09:07 check_cloudwatch_status.cfg
-rwxrwxr-x. 1 apache nagios 130 10.10. 09:07 ec2_credentials.cfg

Attachment contains the command definition snapshot.
ruby $USER1$/check_cloudwatch_status.rb -a $ARG1$ -i $ARG2$ -f $USER1$/aws_credentials.cfg -C CPUUtilization -c $ARG3$ -w $ARG4$

Cheers,
Sujan

This could be an issue with how your Ruby environment is configured. The nagios user's environment likely doesn't have access to the fog gem.

Thanks @mcapra!