EvictionStatus.targetResponders
targetResponders reference responders that should eventually respond to this eviction to help with the graceful eviction of a target. These responders are selected sequentially, according to their specified priority by setting the Active state to the TargetResponder .state field. The maximum number of active responders allowed is 1. Eventually each responder can end up in an Interrupted, Canceled or, Completed state. Responders should observe these states in order to navigate their lifecycle. If the target is a pod, the field is populated from Pod's .spec.evictionResponders. Default responders may be added to the list according to the target. Default responders: - imperative-eviction.k8s.io/evictor responder with a priority of 100 is added to the list if the target is a pod. It will call the imperative Eviction API (pods/<name>/eviction subresource). This call may not succeed due to PodDisruptionBudgets, which may block the pod termination. It will update the responder message and try again with a backoff. The maximum length of the responders list is 11. The length and keys of the list cannot change once set. This field is managed by evictionrequest-controller.
| Field / Type | Description |
|---|---|
name | name allows you to identify the responder reacting to the Eviction. It must be a valid domain-prefixed key (such as "acme.io/foo"). This field must be unique for each responder. This field is required. |
priority | priority for this responder. Higher priorities are selected first by the evictionrequest-controller. If there are responders with the same priority, the responder whose domain name comes first in the alphabetical higher domain order, will be picked. This means that the top domain labels are compared alphabetically first, followed by the lower domain labels. The key is compared last. The responder that is the managing controller of the pod should set the value of this field to 10000 to allow both for preemption or fallback registration by other responders. The minimum value is 0 and the maximum value is 100000. The interval 0-999 is reserved for responders with *.k8s.io suffix. This field is required and immutable.
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state | state specifies a state that is assigned by the evictionrequest-controller. Responders should observe this state in order to navigate their lifecycle. - Inactive means that the responder should not yet process this eviction request. - Active means that the responder is either running or expected to start soon. Also, startTime has been set in the ResponderStatus by the evictionrequest-controller. An active responder should currently interact with the eviction process by updating .status.responders, where .name is the active responder name. ResponderStatus fields should be periodically updated to indicate the progress or completion of the eviction process. If .status.responders[].heartbeatTime field is not updated within the heartbeat deadline defined by the Eviction API (currently 20 minutes), the eviction is passed over to the next responder with a lower priority. Only one responder can be active at a time. - Interrupted means that the responder has failed to start or failed to update heartbeatTime in ResponderStatus in a timely manner. - Canceled means that the responder has been canceled. In other words, there is no EvictionRequest with the same target and Eviction intent in .spec.intent. - Completed means that the responder has successfully completed and set completionTime in ResponderStatus. Please refer to the ResponderStatus in .status.responders for more details on each responder. |