In a StatefulSet's rolling update, when partition is set to 3, which pods are eligible to be updated first?

In a StatefulSet's rolling update, when partition is set to 3, which pods are eligible to be updated first?

• A. Pods with indices 0 to 2
• B. All pods
• C. Pods with indices 3 and higher
• D. No pods are updated

Answer: (C)

Partition in a StatefulSet rolling update decides which pods are allowed to update and which are paused. Pods with ordinal less than the partition are held back, while pods with ordinal equal to or greater than the partition are eligible to update. With the partition set to 3, only pods with indices 3 and higher can be updated first, while pods 0, 1, and 2 stay dormant until the partition changes or the higher-index pods finish updating. In a typical update, updates within that eligible group proceed in descending ordinal order, starting with the highest index in that range.

Partition in a StatefulSet rolling update decides which pods are allowed to update and which are paused. Pods with ordinal less than the partition are held back, while pods with ordinal equal to or greater than the partition are eligible to update. With the partition set to 3, only pods with indices 3 and higher can be updated first, while pods 0, 1, and 2 stay dormant until the partition changes or the higher-index pods finish updating. In a typical update, updates within that eligible group proceed in descending ordinal order, starting with the highest index in that range.