6.1.4. Maintenance Mode Use Cases

Four common Maintenance Mode Use Cases follow:

  1. You want to perform hardware, firmware, or OS maintenance on a host.

    You want to:

    • Prevent alerts generated by all components on this host.

    • Be able to stop, start, and restart each component on the host.

    • Prevent host-level or service-level bulk operations from starting, stopping, or restarting components on this host.

    To achieve these goals, turn On Maintenance Mode explicitly for the host. Putting a host in Maintenance Mode implicitly puts all components on that host in Maintenance Mode.

  2. You want to test a service configuration change. You will stop, start, and restart the service using a rolling restart to test whether restarting picks up the change.

    You want:

    • No alerts generated by any components in this service.

    • To prevent host-level or service-level bulk operations from starting, stopping, or restarting components in this service.

    To achieve these goals, turn on Maintenance Mode explicitly for the service. Putting a service in Maintenance Mode implicitly turns on Maintenance Mode for all components in the service.

  3. You turn off a service completely.

    You want:

    • The service to generate no warnings.

    • To ensure that no components start, stop, or restart due to host-level actions or bulk operations.

    To achieve these goals, turn On Maintenance Mode explicitly for the service. Putting a service in Maintenance Mode implicitly turns on Maintenance Mode for all components in the service.

  4. A host component is generating alerts.

    You want to:

    • Check the component.

    • Assess warnings and alerts generated for the component.

    • Prevent alerts generated by the component while you check its condition.

To achieve these goals, turn on Maintenance Mode explicitly for the host component. Putting a host component in Maintenance Mode prevents host-level and service-level bulk operations from starting or restarting the component. You can restart the component explicitly while Maintenance Mode is on.


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