Nagios Support Forum

I tried to log into the nagios core, but I am getting denied. What is the default password or where is it located? Or, Can I change the username and password without knowing the original?

Nagios core uses Apache's basic authentication. The user information for nagios core is typically stored in a file called htpasswd.users by default. You can use the htpasswd command to add users to this file. There probably isn't a user or password definition in that file on a fresh install. Try the command:

htpasswd /<pathto>/htpasswd.users nagiosadmin

If that file doesn't exist yet, do:

htpasswd -c /<pathto>/htpasswd.users nagiosadmin

It should prompt you to enter a new password for that user and it will write it to file. Make sure your nagios.conf file in your Apache config is also pointing to this file for authentication.

I tried changing the password the way that you suggested and I still can't get logged in. I made sure I was on the correct file, because it only had one username in it and the other had multiple users in it that I created through the nagiosxi add new users. Any other suggestions?

If you're accessing Core underneath a nagiosxi install, the htpassd.users file that you need to be working with will be at /usr/local/nagiosxi/etc/htpasswd.users

You can verify where exactly Apache is looking for the authentication by looking at the nagios.conf file.

I changed the password that is associated with /usr/local/nagiosxi/etc/htpasswd.users. I also verified that nagios.conf file was using this file. I tried again, but got denied.

The default password for Nagios Core on an XI installation is the XI 'nagiosadmin' username and password. I don't think the other uses are added to core by default, you have to use the htpasswd command.