H - A P P E N D I X -

A P P E N D I X H

Setting Up the NAFO Public Network

This appendix contains a procedure for configuring network adapter failover (NAFO) interfaces for the public network on the cluster nodes.

Before you configure the NAFO adapters, pay attention to the following:

Avoid unconfiguring (unplumbing) or bringing down the active adapter of a NAFO group without first switching over the active adapter to a backup adapter in the group. Refer to the Sun Cluster 3.0 System Administration Guide for instructions on how to switch the adapter.

Avoid rewiring backup adapters to different subnets without first removing them from their respective NAFO groups.

Logical adapter operations can be done on the active adapter even if monitoring is on for the group.

You must maintain at least one public network connection for each node in the cluster. The cluster is inaccessible without a public network connection.

Before you create a NAFO group, the following requirements must be met:

All public network adapters must be configured to belong to a NAFO group.

A node can have only one NAFO group on a given subnet.

All adapters in a given NAFO group must be connected to the same subnet.

Only one adapter in a given NAFO group can have a host name association (that is, an /etc/hostname.adapter file.

A public network adapter can belong only to one NAFO group.

To Create a NAFO Group

1. On the node being configured, log in as superuser.

2. Note the public network adapters that are physically connected to the same subnet.

These adapters form the backup adapters for the NAFO group.

3. Create an /etc/hostname.adapter file for one of the public network adapters.

# vi /etc/hostname.adapter

hostname

4. Edit the /etc/inet/hosts file to add the IP address and host name of the public network adapter.

# vi /etc/inet/hosts

IP_address hostname

Note - If a naming service is used, this information should also exist in the naming service database.

5. Create the NAFO group.

# pnmset -c nafoN -o create adapter [adapter ...]

The -c nafoN option performs a configuration subcommand for the specified NAFO group. NAFO groups must be named nafoN, where N is a nonnegative integer for the group.

6. Verify the status of the NAFO group, as in the following example.

# pnmstat -l

group    adapters    status    fo_time    act_adp

nafo0    qfe0:qfe1    OK       NEVER      qfe0