Systems and methods for changing fencing modes in clusters

摘要

A computer-implemented method for changing fencing modes in clusters may include (1) identifying a cluster of nodes configured with a fencing mode for resolving split-brain scenarios within the cluster, (2) identifying a request to reconfigure the cluster of nodes with a new fencing mode, (3) transmitting the request to each node in the cluster of nodes, (4) in response to the request, for each node in the cluster of nodes, testing the operability of the new fencing mode from the node, (5) receiving a message from the node indicating the success of the test; and, after receiving the message indicating the success of the test from every node within the cluster of nodes, and (6) reconfiguring each node within the cluster of nodes to use the new fencing mode. Various other methods, systems, and computer-readable media are also disclosed.

主权项

1. A computer-implemented method for changing fencing modes in clusters, at least a portion of the method being performed by a computing device comprising at least one processor, the method comprising:
identifying a cluster of nodes configured with a functioning fencing mode for resolving split-brain scenarios within the cluster; identifying at least one application regulated by the functioning fencing mode running on at least one node in the cluster of nodes; identifying a request to reconfigure the cluster of nodes with a new fencing mode while the cluster of nodes is not in a split-brain scenario; transmitting the request to each node in the cluster of nodes; in response to the request, for each node within the cluster of nodes:
testing the operability of the new fencing mode from the node;receiving a message from the node indicating a success of the test; after receiving the message indicating the success of the test from every node within the cluster of nodes, reconfiguring each node within the cluster of nodes to use the new fencing mode without first halting output operations from the application on the node to at least one resource to which access was regulated by the functioning fencing mode.