Top "Nagios" questions

Nagios (now known as Nagios Core) is a open source monitoring solution.

Nagios (Return code of 255 is out of bounds)

I am getting the error (Return code of 255 is out of bounds) on the http://localhost/nagios But when I …

nagios
How do I use Nagios to monitor a log file

We are using Nagios to monitor our network with great success. However, we have a syslog for critical application errors …

logfiles nagios
CHECK_NRPE: Error - Could not complete SSL handshake

I have NRPE daemon process running under xinetd on amazon ec2 instance and nagios server on my local machine. The …

linux ssl nagios nrpe nagiosxi
Nagios NRPE: Command not defined

In my nrpe_local.cfg added following command: command[check_mycommand]=/usr/lib/nagios/plugins/check_command 30 35 and then restarted …

nagios nrpe
Nagios: CRITICAL - Socket timeout after 10 seconds

I've been running nagios for about two years, but recently this problem started appearing with one of my services. I'm …

nagios
Monitoring URLs with Nagios

I'm trying to monitor actual URLs, and not only hosts, with Nagios, as I operate a shared server with several …

monitoring nagios
Nagios Monitoring Hosts with check_ping

I've deployed a new instance of Nagios on a fresh install of CentOS 7 via the EPEL repository. So the Nagios …

nagios
Is there a way to extract data from Nagios as if it was a web service?

My situation: I'm working on a web monitoring dashboard that assembles informations from different applications and sources and generate graphs, …

web-services nagios data-exchange
Nagios - HTTP WARNING: HTTP/1.1 403 Forbidden

I am using Nagios XI. I entered following command in order to monitor httpd service of the remote Linux server (128.19.5.131): /…

nagios
Nagios not sending emails

I want to setup nagios to send email notifications. I can send email notifications manually clicking the "Send custom service …

email nagios email-notifications