Ambari User's Guide
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Scanning Service Status

Notice the color of the dot appearing next to each component name in a list of components, services or hosts. The dot color and blinking action indicates operating status of each component, service, or host. For example, in the Summary View, notice green dot next to each service name. The following colors and actions indicate service status:

Status Indicators

Color

Status

Solid Green

All masters are running

Blinking Green

Starting up

Solid Red

At least one master is down

Blinking Red

Stopping

Click the service name to open the Services screen, where you can see more detailed information on each service.