Enterprise Integration for Beginners

Installing puppet on red hat linux based system This blog post will guide you through installing puppet as a master/agent configuration in a RedHat Linux based systems. This is nothing other than collecting the important information mentioned in the puppetlabs web site. What I have done is collecting pieces of information which is scettered through the puppet web site with adding my own experiences which I have gathered during setting up on my environment. 1. Choose a Package Source Puppet Labs provides an official package repo at yum.puppetlabs.com. It contains up-to-date packages, and can install Puppet and its prerequisites without requiring any other external repositories. This information applies to RHEL itself, as well as any distributions that maintain binary compatibility with it, including but not limited to CentOS, Scientific Linux, Oracle Linux, and Ascendos. Enabling this repository will let you install Puppet without requiring any other external...

I am writing this blog to share my experience when i was asked to apply a patch which was written by some other person. When we applying patches, sometimes we may get some errors in the patch command. This blog post will help you to understand the format of the patch file and from that you can identify the reasons which caused your patch to fail and enable you to apply patch manually if required. Patch or diff files are just text files, so you can look at them with less or a text editor. If you prefer to use a terminal, colordiff (in the colordiff package) provides syntax highlighting. If the patch is long, you may want to use less to look at it. You need the -R option for less, or else the colors won’t show. I also always use -S, which will enable horizontal scrolling in less instead of wrapping long lines. The whole command to view a patch with syntax highlighting through less in a terminal is: ~$ cat file.patch | colordiff | less -RS Patch formats Each patch file comes in...