Installing Informix-Online XPS

For information about installing Informix-Online XPS, refer to the Installation Notes INFORMIX-OnLine XPS document. Any changes made in the /etc/system file to support Informix-Online XPS must be based on the information contained in your Informix documentation.

The Informix-Online XPS documentation always supersedes the information in this section.

(Network Security) Informix requires the Private Interconnect IP address of the cluster nodes to be available in the /etc/hosts file during installation. If any of the nodes of the cluster are configured to run as NIS or DNS name servers, this requirement may present a security problem because the name servers may make the private addresses available to unauthorized hosts. In the interest of security, if Informix is installed on your cluster, you may not want to configure the nodes as NIS or DNS name servers.

How to Install Informix-Online XPS

In a Sun Cluster configuration, perform the following steps to install Informix-Online XPS.

1. Edit the /etc/hosts file using your favorite text editor.

   For example:

   # vi /etc/hosts

2. Add lines similar to the following to the /etc/hosts file.

   204.152.65.1 ssa28-scid0 204.152.65.17 ssa28-scid1 204.152.65.2 ssa28a-scid0 204.152.65.18 ssa28a-scid1

   In this example, 204.152.65.1 and 204.152.65.17 are the IP addresses assigned by the Sun Cluster system to the SCI cards on the primary node. IP addresses 204.152.65.2 and 204.152.65.18 are the addresses assigned to the SCI cards on the secondary node.

   From node 1, you can use ssa28a-scid0 or ssa28a-scid1 to communicate with node 2 in the cluster. This choice enables you to select the connection (SCI 0 or SCI 1) that is used to carry the message.

   The Informix onconfig configuration file uses these names to set up communication between the two nodes.