Stumbled by ‘Nagios access forbidden error 403’? We can help you in fixing it.

Here at Bobcares, we have seen several Nagios errors as part of our Server Management Services for web hosts and online service providers.

Today we’ll take a look at the cause for this error and see how to fix it.

What causes ‘Nagios access forbidden error 403’ to occur

Before we get into the solution part of the error, let us first discuss what causes this error to occur in Nagios.

The most common reason for this error to occur is index.php missing in the DirectoryIndex section in httpd.conf file. Setting an improper PHP version also becomes a cause to trigger this error message in Nagios.

In some cases, you will not have permission to access the requested object due to improper permissions set to the files and folders.

How we fix ‘Nagios access forbidden error 403’

Now let us get into the solution part of this error message.

One of our customers approached us with this Nagios error. Now let’s see how our Support Engineers fix this error message.

Missing index.php file is one of the common reasons. So we first, open the httpd.conf file.

Then we search for the below code.

<IfModule dir_module>
DirectoryIndex index.html
</IfModule>

We then change the code as below by adding the index.php.

<IfModule dir_module>
DirectoryIndex index.html index.php
</IfModule>

Finally, this fixed the error efficiently.

Sometimes, in a few cases, the PHP version also causes the error. So we can try installing the PHP packages by running the below command.

yum install php-5.x

This way we can fix this error with ease.

[Need any further assistance with Nagios – We can help you with it]

Conclusion

In short, this forbidden error in Nagios occurs due to various reasons. It includes missing index.php in the DirectoryIndex section in httpd.conf file, improper PHP version, and file permissions set. Today, we saw how our Support Engineers resolve this Nagios error.