node_down¶

Name¶

node_down -- Bring a compute node down cleanly.

Synopsis¶

/usr/lib/beoboot/bin/node_down node [state]

Description¶

This script can be used to bring a node down ("reboot", "halt", "pwroff") in such a way that the local filesystems on the compute node remain in a constant state.

node_down works by first changing the node's state to "unavailable", then remounting all of the filesystems read-only, followed by using bpctl to perform the actual state change you requested.

Options¶

node: The node number of the node to bring down.
state: The state to put the node in after remounting all the filesystems. The state defaults to "reboot" if unspecified.

Examples¶

Cleanly bringing down node 3:

[root@cluster ~] #  /usr/lib/beoboot/bin/node_down 3
 Remounting / readonly...
 Remounting /proc readonly...
 Remounting /home readonly...
 Remounting /dev/pts readonly...
 Syncing disks on node 3.
 Shutting down node 3 (reboot)