Verifying checksums of installed files

After installing the product or after installing maintenance packages, you can use the installation verification utility (IVU) to compute checksums of the installed file set to verify the checksum against the checksum in the product bill of materials.

Before you begin

Installing the product also installs the IVU, which is the installver command-line tool.

About this task

This topic describes using the installver command to compute a checksum on the installed files and compare the checksum to the product bill of materials.

The IVU tool is installed during the installation of the following product components:
  • WebSphere® Application Server Network Deployment
  • Application Client
  • IBM® HTTP Server
  • Web server plug-ins
  • Update Installer for WebSphere Application Server

You can also use the IVU to compute a new checksum for a system after you make significant configuration changes. The installver tool computes a new baseline checksum for each file in the inventory of a configured system to use to identify file changes in the later comparisons. Such a comparison is useful for detecting file tampering on the configured system, for example.

You can use the new checksums to compare installations on multiple systems. The following graphic illustrates the main use-cases where you can perform product verification at any point of the product life-cycle or use the inventory file, which is part of the baseline checksum feature, to provide full-file verification of a configured system.
Overview of the installation verification utility

Although the most common use of the tool is to compare the product bill of materials to the installed file set after installation or after installing maintenance, other tasks are also possible.

Procedure

Results

When you are satisfied that your installed or updated file set matches the product bill of materials, you are finished installing and verifying the product or updating and verifying the product.

IBM Support has documents and tools that can save you time gathering information needed to resolve problems. If you detect a problem, before opening a problem report see if the problem is a known problem by checking the Support page:

The IVU performs the tasks using the logic described in the following graphic:
Installation verification utility logic flow

What to do next

After verifying your installation, you can create profiles or deploy an application on an existing application server profile.

After installing, updating, and verifying, the next step is to use the product. If you created a standalone application server or a cell, start the application server, or the deployment manager, nodeagent, and federated application server, to use the administrative console to deploy an existing application. See Fast paths for WebSphere Application Server for more information.

If you have not yet created a cell profile, a deployment manager profile, or a standalone application server profile, go to the profiles documentation to see how to create a profile.




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Last updatedLast updated: Jun 11, 2013 11:43:36 AM CDT
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