How Do You Upgrade Python 2.6 to Python 2.7 on CentOS 6?

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Problem scenario
On your Linux CentOS 6.x server you run “python –version” and find that Python 2.6 is installed.  You want Python 2.7 to be installed instead.  You do not want to use binaries (e.g., .rpm packages) or yum repositories. What do you do?

Solution
Run these commands:
curl -k https://www.python.org/ftp/python/2.7.14/Python-2.7.14.tar.xz > Python-2.7.14.tar.xz
sudo mv Python-2.7.14.tar.xz /usr/bin/
cd /usr/bin/
sudo tar xf Python-2.7.14.tar.xz
cd Python-2.7.14
sudo ./configure –prefix=/usr/local
sudo make &&

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How Do You Write Your Own Custom, Importable Module in Python?

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Problem scenario
You want to build your own Python module.  You want this module to be able to be imported on your Linux server with Python (e.g., with “import contint”).  How do you write such a module?

Possible Solution #1
Write a .py file for the module, and place it where Python will look.  To find the location run these three commands:

python

import sys

print(sys.path)

# This command above will display directory paths for your .py file (the module that will be able to be imported).

…

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How Do You Install Jenkins on a CentOS/RedHat/Fedora server?

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Problem scenario
You want to install Jenkins on a RedHat derivative Linux server (e.g., CentOS, RHEL, or Fedora).  What do you do?

Solution
1.  Run these commands:

curl https://pkg.jenkins.io/redhat-stable/jenkins.repo > /tmp/jenkins.repo
sudo mv -i /tmp/jenkins.repo /etc/yum.repos.d/jenkins.repo
sudo rpm –import https://pkg.jenkins.io/redhat-stable/jenkins.io.key

2.  Run this command:
sudo yum -y install java jenkins
# When you see the “Package configuration” menu that says “Configuring grub-pc” press the tab key (to get to the “Ok” option for “keep the local version currently installed”). 

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How Do You Install and Configure SaltStack Master and SaltStack Minion?

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Problem scenario
You want to install SaltStack Master and SaltStack Minion.  You want them to be configured to work together.  You have different distributions of Linux.  What should you do?

Solution in Three Parts
Overview
This solution works for any distribution of Linux (e.g., Debian distributions, including Ubuntu, RedHat derivatives, including CentOS, RHEL, and Fedora, or SUSE).  This solution is written as if your Linux servers were in AWS. 

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How Do You Install Apache ActiveMQ on Any Distribution of Linux?

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Problem scenario
You want a Bash script that will install ActiveMQ on CentOS/RedHat/Fedora, Debian/Ubuntu, and SUSE Linux distributions.  How do you write a script that will work on different distributions of Linux to install Apache ActiveMQ?

Solution
With a “sudo bash” command, run a script with the following content (e.g., call the script below “installactivemq.sh” and run “sudo bash installactivemq.sh“):

#!/bin/bash
# Written by www.continualintegration.com

activemqversion=5.15.12 

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How Do You Install the Latest Version of Apache Ant?

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Problem scenario
You want to use the same Bash script to install Apache Ant on CentOS/RedHat/Fedora, Debian/Ubuntu, or Linux SUSE.  How do you install the latest version of Apache Ant on to any distribution of Linux? 

Solution
Updated 4/8/21
With a “sudo bash” command, run a script with the following content (e.g., call the script below “installant.sh” and run “sudo bash installant.sh“):

#!/bin/bash
# Written by www.continualintegration.com

antversion=1.10.9  # Change this version as necessary

distro=$(cat /etc/*-release | grep NAME)

debflag=$(echo $distro | grep -i “ubuntu”)
if [ -z “$debflag” ]
then  

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How Do You Deploy a Kubernetes Cluster in Google Cloud Platform?

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Updated on 8/18/19

Problem Scenario
How do you deploy a Kubernetes cluster in Google Cloud Platform?

Solution
There are three ways to do this.  (You could use the console in a web browser.  A second way is with a command line interface method.  A third way is with a REST API.)

Possible solution #1
One way is with the console.

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How Do You Get Kubernetes to Work as a Test Instance?

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Problem scenario
You want to set up Kubernetes on a server as quickly as possible as a proof-of-concept.  You want to create pods without the best practice security mechanisms because you are behind a firewall and in a development environment.  How do you quickly install and configure Kubernetes as a development deployment on a single host server?

Solution
1.  Install and configure kubelet, kubeadm, kubectl, etcd, kube-proxy,

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