Partition indicates the ordinal at which the StatefulSet should be partitioned for updates.
During a rolling update, all pods from ordinal Replicas-1 to Partition are updated.
All pods from ordinal Partition-1 to 0 remain untouched.
This is helpful in being able to do a canary based deployment.
The default value is 0.
The maximum number of pods that can be unavailable during the update.
Value can be an absolute number (ex: 5) or a percentage of desired pods (ex: 10%).
Absolute number is calculated from percentage by rounding up.
This can not be 0.
Defaults to 1.
This field is alpha-level and is only honored by servers that enable the MaxUnavailableStatefulSet feature.
The field applies to all pods in the range 0 to Replicas-1.
That means if there is any unavailable pod in the range 0 to Replicas-1, it will be counted towards MaxUnavailable.
RollingUpdateStatefulSetStrategy is used to communicate parameter for RollingUpdateStatefulSetStrategyType.