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6 Configuring virtual IP addresses
HP StoreAll OS Software uses a cluster network interface to carry Fusion Manager traffic and traffic
between nodes. This network is configured as
Bond0
after the cluster is installed. To provide
failover support for the Fusion Manager, a virtual interface (VIF) is created for the cluster network
interface. Although the cluster network interface can carry traffic between nodes and clients, HP
recommends that you configure one or more user network interfaces for this purpose.
To provide high availability (HA) for a user network, configure a bonded VIF for the network, and
then set up failover for the VIF. This method prevents interruptions to client traffic. If necessary, the
node hosting the VIF can fail over to its backup server, and clients can continue to access the file
system through the backup server.
HP StoreAll Storage systems also support the use of VLAN tagging on the cluster and user networks.
See
“Configuring VLAN tagging” (page 147)
for an example.
Network and virtual interface (VIF) guidelines
To provide high availability, user interfaces used for client access must be configured as bonded
VIFs. Note the following:
•
Nodes needing to communicate for file system coverage or failover must be on the same
network interface. Also, nodes set up as a failover pair must be connected to the same network
interface.
•
Use a Gigabit Ethernet port (or faster) for user networks.
•
NFS, SMB, FTP, and HTTP clients can use the same user VIF. Servers providing VIFs should
be configured in backup pairs, and the NICs on those servers must also be configured for
failover. See “Configuring high availability on the cluster” in the applicable Administrator
Guide for information about performing this configuration from the GUI.
•
For Linux and HP StoreAll Windows clients, servers hosting the VIF must be configured in
backup pairs. However, HP StoreAll clients do not support backup NICs. Instead, HP StoreAll
clients must connect to the parent bond of the user VIF or to a different VIF.
•
Ensure that the parent bonds (for example,
Bond0
) have a defined route:
1.
Examine the default Linux OS
route/gateway
for each parent
interface/bond
that
was defined during the HP StoreAll installation by entering the following command:
# route
Command output:
The default destination is the default
gateway/route
for Linux. The default destination,
which was defined during the HP StoreAll installation, had the operating system default
gateway defined but not for HP StoreAll.
2.
To view network interfaces controlled by HP StoreAll, enter the following command:
# ibrix_nic -l
Notice if the ROUTE column is unpopulated against each listed IFNAME.
144 Configuring virtual IP addresses