node_down -- Bring a compute node down cleanly.
/usr/lib/beoboot/bin/node_down node [state]
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.
- The node number of the node to bring down.
- The state to put the node in after remounting all the filesystems. The state defaults to "reboot" if unspecified.
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)