Figure 7-6 Grafana Logon Window After you change the password  you are redirected to the home page of your Grafana server.  You can set preferences for your user by hovering on the user button (see red arrow in  Figure 7-7 on page 174) and selecting “Preferences“. From there  we changed the UI Theme  from “dark“ to “light “ for better read ability in the documentation. To use Grafana for visualization of data that is collected by Prometheus  you must add your  Prometheus instance as a data source to your Grafana server. You have two options to get to the add datasource panel as shown in Figure 7-8 on page 175. 174  Getting started with z/OS Container Extensions 7.6.5 Adding Prometheus as data source to Grafana Figure 7-7 Grafana home page