6.3 HP StoreAll 9300/9320 Storage Administrator Guide (AW549-96072, June 2013)

Configuring automated failover manually

To configure automated failover manually, complete these steps:

1. Configure file serving nodes in backup pairs.

2. Identify power sources for the servers in the backup pair.

3. Configure NIC monitoring.

4. Enable automated failover.

1. Configure server backup pairs

File serving nodes are configured in backup pairs, where each server in a pair is the backup for

the other. This step is typically done when the cluster is installed. The following restrictions apply:

• The same file system must be mounted on both servers in the pair and the servers must see the

same storage.

• In a SAN environment, a server and its backup must use the same storage infrastructure to

access a segment’s physical volumes (for example, a multiported RAID array).

For a cluster using the unified network configuration, assign backup nodes for the bond0:1

interface. For example, node1 is the backup for node2, and node2 is the backup for node1.

1. Add the VIF:

ibrix_nic -a -n bond0:2 -h node1,node2,node3,node4

2. Set up a standby server for each VIF:

# ibrix_nic -b -H node1/bond0:1,node2/bond0:2

ibrix_nic -b -H node2/bond0:1,node1/bond0:2

ibrix_nic -b -H node3/bond0:1,node4/bond0:2

ibrix_nic -b -H node4/bond0:1,node3/bond0:2

2. Identify power sources

To implement automated failover, perform a forced manual failover, or remotely power a file

serving node up or down, you must set up programmable power sources for the nodes and their

backups. Using programmable power sources prevents a “split-brain scenario” between a failing

file serving node and its backup, allowing the failing server to be centrally powered down by the

Fusion Manager in the case of automated failover, and manually in the case of a forced manual

failover.

StoreAll software works with iLO, IPMI, OpenIPMI, and OpenIPMI2 integrated power sources.

The following configuration steps are required when setting up integrated power sources:

• For automated failover, ensure that the Fusion Manager has LAN access to the power sources.

• Install the environment and any drivers and utilities, as specified by the vendor documentation.

If you plan to protect access to the power sources, set up the UID and password to be used.

Use the following command to identify a power source:

ibrix_powersrc -a -t {ipmi|openipmi|openipmi2|ilo} -h HOSTNAME -I IPADDR

-u USERNAME -p PASSWORD

For example, to identify an iLO power source at IP address 192.168.3.170 for node ss01:

ibrix_powersrc -a -t ilo -h ss01 -I 192.168.3.170 -u Administrator -p

password

3. Configure NIC monitoring

NIC monitoring should be configured on user VIFs that will be used by NFS, SMB, FTP, or HTTP.

Configuring High Availability on the cluster 61