Manually configuring /etc/cluster/rhosts file on individual nodes

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For a more secure initial configuration, manually configure a /etc/cluster/rhosts file for PowerHA® SystemMirror® on each node before configuration.

About this task

The PowerHA SystemMirror installation creates this empty file with read-write permissions for root only. Ensure that each IP address/label is valid for the cluster. Otherwise, an error is logged in smit.log and clcomd.log .

To manually set up the /etc/cluster/rhosts file:

Procedure

  1. As root, open the file /etc/cluster/rhosts on a node.
  2. Edit the file to add all possible network interface IP labels or addresses for each node. Put only one IP label or address on each line. Do not add any other characters or comments. The format of this file does not allow to have comments, additional lines, or characters in it, besides the IP labels.