11.5.2 Setting up for logical host use in a non-cluster environment

This subsection provides an overview of setting up and using a logical host that is not subject to failover.

When you set up a logical host that is not subject to failover, you can perform the same procedure as when setting up a logical host to run in a normal cluster system.

For details about the procedure and functions, see the chapter that describes operation in a cluster system in the applicable JP1 manual. JP1 settings for a logical host and logical host operation are the same for all JP1 programs, except where the subject is failover and cluster software linkage.

To use JP1/AJS3 in a logical host environment that is not subject to failover (no cluster software is linked):

1. Prepare the logical host environment.

   Prepare the disk area and IP address for the logical host.

   • Disk area for the logical host

     Create a storage directory on a local disk for sole use by JP1/AJS3 on the logical host. If you specify a directory that is being used by an instance of JP1/AJS3 on the physical host or another logical host, JP1 will not operate correctly.

   • IP address for the logical host

     The logical host can use an alias IP as the IP address. Note, however, that a unique IP address must be able to be resolved from the logical host name.

     For the logical host, assign an IP address that is not the same as the IP address of the physical host. The prerequisites for the logical host environment are the same as for running JP1/AJS3 in a cluster system. However, because the logical host does not fail over, some of the prerequisites do not apply, such as the ability to inherit data between servers. Note that the sections about shared disks and logical IP addresses in the setup described for a normal cluster system correspond to the disk area creation and IP address allocation in regard to a logical host in a non-cluster system.

2. Set up JP1/AJS3 in the logical host environment.

   Set up JP1/AJS3 in the logical host environment in the same manner as for a primary node in the cluster system. When setting up logical hosts that will fail over in a cluster system, you must set up JP1/AJS3 on both the primary node and the secondary node. However, in the case of a logical host that will not be failed over, you only set up JP1/AJS3 on the server where it will run. Note that you must set up JP1/Base before setting up JP1/AJS3.

   For details about setting up a logical host for use in a normal cluster system, see the following references:

   For Windows

   See 8.2 Setting up the operating environment for cluster system operation in the Job Management Partner 1/Automatic Job Management System 3 Configuration Guide 1.

   For UNIX

   See 17.2 Setting up the operating environment for cluster system operation in the Job Management Partner 1/Automatic Job Management System 3 Configuration Guide 1.

Cautionary note

Before you attempt to start JP1/AJS3 services in Windows, make sure that JP1/AJS3 Database_JFn^# is not running.

If JP1/AJS3 Database_JFn is running, stop it and then start the JP1/AJS3 services.

#

_JFn refers to the embedded database setup ID used for JP1/AJS3 services on a logical host.

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