公开(公告)号：US11892918B2

公开(公告)日：2024-02-06

申请号：US17694964

申请日：2022-03-15

Applicant: Nutanix, Inc.

Inventor： Rohan Mohan Rayaraddi ,  Tarun Mehta

IPC: G06F11/20 ,  G06F11/14 ,  G06F8/65 ,  G06F9/50 ,  G06F11/07

CPC classification number: G06F11/2025 ,  G06F8/65 ,  G06F9/5038 ,  G06F11/0793 ,  G06F11/1433 ,  G06F11/1464 ,  G06F11/2069 ,  G06F11/2094 ,  G06F2201/80

Abstract: A patching operation on an availability group cluster having a plurality of nodes is disclosed. The patching operation is performed in a plurality of iterations, each including determining a current state of each of the plurality of nodes, selecting a next node based on the current state, and patching the next node. A secondary replica node is selected as the next node before the a primary replica node. Each secondary replica node is patched in accordance with a first priority, upon patching each of the secondary replica node, a failover target node for patching the primary replica node is selected, the failover target node is selected based on a second priority, and according to the second priority, a healthy synchronous secondary replica node of the plurality of nodes is selected as the failover target node before an unhealthy synchronous secondary replica node of the plurality of nodes.