How to Reset nagiosadmin Password

In one occasion, I try to¬†access my Nagios monitoring server page and it is very tragic that I forgot the password to access it. Nagios installation itself by default has its primary username to be used for accessing Nagios monitoring server page. The username or the account is ‘nagiosadmin’ and I hardly remembered the password.

This is where the pop-up dialog box appears to ask for username and password to access Nagios monitoring server page where I edited the URL of Nagios monitoring server so it can be hidden :

nagios-entry-password-edit
Display of pop-up dialog box for authentication entering Nagios monitoring server page in Chrome web browser

Another image which is clearly shown the Nagios Administration authentication pop-up dialog box. I edited the image below so the URL of Nagios Administration monitoring server page didn’t shown up :

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