Disassociate a server from a power source:
You can dissociate a file serving node from a power source by dissociating it from slot 1 (its default
association) on the power source. Use the following command:
ibrix_hostpower -d -s POWERSOURCE -h HOSTNAME
Delete a power source:
To conserve storage, delete power sources that are no longer in use. If you are deleting multiple
power sources, use commas to separate them.
ibrix_powersrc -d -h POWERSRCLIST
Delete NIC monitoring:
To delete NIC monitoring, use the following command:
ibrix_nic -m -h MONHOST -D DESTHOST/IFNAME
Delete NIC standbys:
To delete a standby for a NIC, use the following command:
ibrix_nic -b -U HOSTNAME1/IFNAME1
For example, to delete the standby that was assigned to interface
eth2
on file serving node
s1.hp.com:
ibrix_nic -b -U s1.hp.com/eth2
Turn off automated failover:
ibrix_server -m -U [-h SERVERNAME]
To specify a single file serving node, include the
-h SERVERNAME
option.
Failing a server over manually
The server to be failed over must belong to a backup pair. The server can be powered down or
remain up during the procedure. You can perform a manual failover at any time, regardless of
whether automated failover is in effect. Manual failover does not require the use of a programmable
power supply. However, if you have identified a power supply for the server, you can power it
down before the failover.
Use the GUI or the CLI to fail over a node:
•
On the GUI, select the node on the Servers panel and then click
Failover
on the Summary
panel.
•
On the CLI, run
ibrix_server -f
, specifying the node to be failed over as the
HOSTNAME
.
If appropriate, include the
-p
option to power down the node before segments are migrated:
ibrix_server -f [-p] -h HOSTNAME
Check the Summary panel or run the following command to determine whether the failover was
successful:
ibrix_server -l
The STATE field indicates the status of the failover. If the field persistently shows
Down-InFailover
or
Up-InFailover
, the failover did not complete; contact HP Support for assistance. For
information about the values that can appear in the STATE field, see
“What happens during a
failover” (page 41)
.
Failing back a server
After an automated or manual failover of a server, you must manually fail back the server, which
restores ownership of the failed-over segments and network interfaces to the server. Before failing
back the server, confirm that it can see all of its storage resources and networks. The segments
owned by the server will not be accessible if the server cannot see its storage.
Configuring High Availability on the cluster
49
