Failed to start Nagios Core 4.4.5 and not sure what to do? Our experts have your back. Read to find out more.

At Bobcares, we offer solutions for every query, big and small, as a part of our Server Management Services.

Let’s take a look at how our Server management Support Team is ready to help customers when Nagios Core 4.4.5 failed to start.

How to fix: Failed to start Nagios Core 4.4.5

Some of our customers have been running into trouble when they attempt to start Nagios Core version 4.4.5. Upon careful analysis, our Support Techs have been able to come up with a fix for this specific issue.

First, we have to run a verification of the Nagios configuration to check for errors. This involves running the following command as root:

/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

If the output consists of any errors, our Support Techs suggest fixing these errors first and then restarting Nagios Core.

Alternatively, the error may be due to issues with configuration files. Our Support Engineers recommend correcting the configuration files and then restarting Nagios Core.

In fact, one of our customers was unable to start Nagios Core due to duplicate host as well as service template entries in the hosts.cfg file. Ensuring the entries are present in the templates.cfg file before removing them from the hosts.cfg file resolved the issue.

Furthermore, missing configuration files can also result in an error. If the files are not present at the expected location, or if there is a permission issue, Nagios Core will refuse to start.

Our Support Techs recommend trying each of the troubleshooting tips as seen above to carefully isolate the cause behind the error. If you are still having trouble, drop us a line and we will take care of it for you in no time.

[Need assistance with another query? We are available 24/7.]

Conclusion

In brief, our skilled Support Engineers at Bobcares demonstrated what to do when Nagios Core 4.4.5 failed to start.