Installing OpenShift Origin

This post will cover installing OpenShift Origin on a single machine that will act as the master and node. A CentOS 7.1 virtual machine will be used for the installation and the virtual machine was only configured for 4 Gb of memory.

System Requirements

(https://docs.openshift.org/latest/install_config/install/prerequisites.html#system-requirements)

Operating System: Fedora 21, CentOS 7.1, or RHEL 7.1 with “Minimal” installation option
Processor: 2 vCPUs
Memory: 8Gb minimum
HD Space: 30 Gb

Installation

Step 1 – Install base packages

yum install wget git net-tools bind-utils iptables-services bridge-utils bash-completion

Step 2 – Update system packages

yum -y update

Step 3 – Install Docker

yum -y install docker

Step 4 – Use insecure Docker registry

sed -i "sOPTIONS='--selinux-enabled'OPTIONS='--selinux-enabled --insecure-registry 172.30.0.0/16'g" /etc/sysconfig/docker

Step 5 – Start Docker service

service docker start

Step 6 – Install IPTables service

yum install iptables-services

Step 7 – Restart IPTables service

service iptables restart

Step 8 – Download OpenShift Origin binaries

(https://github.com/openshift/origin/releases)

wget https://github.com/openshift/origin/releases/download/v1.0.6/openshift-origin-v1.0.6-2695cdc-linux-amd64.tar.gz

Step 9 – Create an OpenShift directory to store executables

mkdir /openshift

Step 10 – Untar OpenShift Origin binaries

tar -xzf openshift-origin-v1.0.6-2695cdc-linux-amd64.tar.gz --directory=/openshift

Step 11 – Add OpenShift directory to the system path

export PATH=/openshift:$PATH

Step 12 – Launch OpenShift

/openshift/openshift start

Step 13 – Log into the web console

URL: https://ip_address:8443/console
Credentials: System credentials

A prompt to create a new project will show after successful login.

References

OpenShift Origin Documentation: https://docs.openshift.org/latest/getting_started/administrators.html