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OpenStack Installation on RHEL7 System

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There's a simple "Get Started" Guide on the redhat website, which briefly outlines how to get a sample OpenStack system up and running in 5 steps.  The first, easily overlooked step is to start by installing a "minimum-install" version of RHEL7 on a physical system.  If you've already set up and configured a system that you're using for everyday tasks and/or work functions, be aware that the installation will repeatedly fail with errors due to incompatible options, missing dependencies, etc. 

Provided that you've followed the consequent steps in the guide to register the system and enable the pertinent repositories, the next step is to install and run the packstack script:

# yum install openstack-packstack # packstack --allinone
This is a rather lengthy python script that uses some puppet modules to install the necessary software components and configures the system as the OpenStack All-in-One server.  According to the packstack documentation, &q…

bash tips

- no title specified Little-known bash commands for the SysAdmin Toolbox finger  This is a user-information lookup program, which display information on system users.  If it's executed without an argument it will display a list of currently-logged in users: Login     Name       Tty      Idle  Login Time   Office     Office Phone   Host user1     user1     tty1     1:40  Jan  7 15:57                           (:0) user1     user1     pts/0          Jan  7 15:58                           (192.168.9.1) Given a username as an argument it will display extended information on that user: # finger user1 Login: user1                         Name: user1 Directory: /home/user1               Shell: /bin/bash On since Thu Jan  7 15:57 (CST) on tty1 from :0     1 hour 40 minutes idle On since Thu Jan  7 15:58 (CST) on pts/0 from 192.168.9.1    4 seconds idle No mail. No Plan. chfn Similarly, use the chfn command to change the information that the finger command displays. SYNOPSIS        chfn [-f fu…