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One of the dev teams I used to support has been using Docker for jobs started on Jenkins executors(worker nodes).  The Jenkins worker nodes  have been around for a while  and consequently run CentOS 6 with older docker-io packages installed.

When I was asked to provision some new executors I was at a loss because there is very little documentation for installing docker in CentOS 6.  In fact it’s recommended by Docker not to use the older Linux kernels(2.6.x).

Goals of this post:

• Install  docker-io on CentOS 6
• configure daemon options – default network

CentOS 6 doesn’t have native support for Python 3 and corresponding module management tool ‘pip’.  I prefer pip for managing my Python modules.  On CentOS 7 there is a specific yum package for pip(Python 2.7) and pip3(Python 3.4) respectively. However on COS 6 we must install the ‘epel repository’ to get Python 3.4 and there is no specific package for installing ‘pip 3’.  This tutorial is a friendly reminder for myself and others on how to install Python3 & pip3 for CentOS 6.x.

Goals of this post:

• Install Python 3.4
• Install pip3
• Upgrade pip3
  

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