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Give it a few minutes to see if it is running properly and check the output/status info.
the status of the service is :
ERROR : Alarm signal (Nagios time-out)
i have installed mysql is the client machine to try it but i dont why the plugin didn't respond to it, also i want to know NSClient++ is the perfect client for all plugins ?
Or there is plugins that need another client to be installed ?
...also i want to know NSClient++ is the perfect client for all plugins ?
I am not sure what you mean by "client for all plugins"... If you would like to know if any particular agent is better than another one - it all depends on what you would like to monitor. NSClient++ is a popular agent, but you can also use NCPA, NRPE, etc.
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