Nagios XI – How to Change Default Passwords

The purpose of this document is to provide a guide on changing the default passwords for an existing Nagios XI installation to ensure a safe and secure monitoring environment. This includes changing the passwords for the Linux root user, and users the Nagios XI software uses to access the MySQL and Postgres databases.

This guide is directed towards Nagios XI administrators interested in changing the default passwords for the local root account, MySQL accounts, and Postgres accounts for a secure Nagios monitoring server.