You can use Linux FailSafe to reset nodes in a cluster. This sends a reset command to the system controller port on the specified node. When the node is reset, other nodes in the cluster will detect this and remove the node from the active cluster, reallocating any resource groups that were allocated on that node onto a backup node. The backup node used depends on how you have configured your system.
Once the node reboots, it will rejoin the cluster. Some resource groups might move back to the node, depending on how you have configured your system.
To reset a Linux FailSafe node using the Cluster Manager GUI, perform the following steps:
On the left side of the display, click on the “Nodes & Cluster” category.
On the right side of the display click on the “Reset a Node” task link to launch the task.
Enter the node to reset.
Click on “OK” at the bottom of the screen to complete the task.
When Linux FailSafe is running, you can reboot a node with the following Cluster Manger CLI command:
cmgr> admin reset node A |
This command uses the Linux FailSafe daemons to reset the specified node.
You can reset a node in a cluster even when the Linux FailSafe daemons are not running by using the standalone option of the admin reset command of the CLI:
cmgr> admin reset standalone node A |
This command does not go through the Linux FailSafe daemons.