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ClearCase Workgroup (user mode) pre-requisites
This document is part of a complete set-up of installing and configuring a Windows interop environment with Linux on RHEL 5. There is not another set of detailed documents anywhere on the internet out side of our site. If this article does not contain enough information, search the rest of this site: https://webspheretools.com and you will find many mini articles on Linux and Windows interop and MVFS/Samba support. Also feel free to contact me if you require ClearCase consulting and support.
The approach for this ClearCase setup is to have all users, groups and computers reside in a single domain. Below are some immediate reading points to explain the prerequisite tables.
· It is recommended that all users of the Windows system must have an equivalent Linux account with the same username and same case otherwise. The case and spelling must be identical between the operating systems for both the usernames and primary groups. Avoid names that have spaces or special characters that are not supported on the different operating systems.
· It is mandatory that the primary group on Linux/UNIX and Windows match.
· Rational strongly recommends that you limit your group name to 8 characters or less AND recommends that group names do not contain spaces. This is due to the fact that ClearCase on Linux/UNIX is compiled for POSIX compliance. Rational support has seen instances where groups containing more than 8 characters such as “clearcase_users” will work for a period of time; however, once these groups stop working due to group name truncation during a look-up, it is impossible to resolve the issue.
· When the User Security Mode is utilized, all of the user, group and machine accounts are stored on a the Windows clients and in Linux and mapped via the Samaba user map.
The following active directory security groups are to be created all within the same OU in Active Directory
The following user accounts and group memberships are required.
Steve Robinson has been working in IT for over 20 years and has provided solutions for many large-enterprise corporate companies across the world. Steve specialises in Java and Middleware.
In January 2013, I was awarded the prestigous 'IBM Champion' accolade.
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