How to Install Openshift on Ubuntu Server Latest

Introduction

OpenShift is a Platform-as-a-Service (PaaS) that allows developers to create, deploy, and manage applications on the cloud. It provides a powerful and flexible environment for developing and scaling applications, and it's completely open-source.

This tutorial will guide you through the process of installing OpenShift on Ubuntu Server Latest. We'll cover all the steps necessary to get your OpenShift environment up and running.

Prerequisites

Before getting started, you'll need:

• A server running the latest version of Ubuntu. You'll also need sudo privileges on this server.
• At least 4GB of RAM and 2 CPUs. OpenShift requires a powerful machine to run properly.
• A registered domain name pointing to your server's IP address.
• A valid SSL certificate for your domain.

Step 1: Installing Docker

OpenShift utilizes Docker containers to deploy applications. Hence, Docker needs to be installed first. To install Docker, run the following commands:

1. Update the package index:

sudo apt update

2. Install Docker:

sudo apt install docker-ce docker-ce-cli containerd.io

3. Verify that Docker is installed successfully:

sudo docker run hello-world

If Docker is installed correctly, you should see a message indicating that the container has been successfully run.

Step 2: Installing OpenShift

Now we're ready to install OpenShift. Follow these steps:

1. Download the latest version of OpenShift:

wget https://github.com/openshift/origin/releases/latest/download/openshift-origin-client-tools-latest-linux-64bit.tar.gz

2. Extract the downloaded archive:

tar -xvf openshift-origin-client-tools-latest-linux-64bit.tar.gz

3. Move the extracted folder to the desired location. In this tutorial, we'll move it to /usr/local/bin/:

sudo mv openshift-origin-client-tools-* /usr/local/bin/openshift

4. Add the openshift directory to the system's path:

export PATH=$PATH:/usr/local/bin/openshift

5. Verify that OpenShift is installed correctly by running:

oc version

This should output the version of OpenShift that you've installed.

Step 3: Configuring OpenShift

To configure OpenShift properly, you need to create a domain name, generate a wildcard SSL certificate, and configure DNS records.

1. Create a domain name. For example, example.com. Use the following command to create a DNS record to point the domain name to your server's IP address:

sudo echo "your_server_public_ip example.com www.example.com" >> /etc/hosts

2. Generate a self-signed wildcard SSL certificate for your domain:

sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/ssl/private/openshift.key -out /etc/ssl/certs/openshift.crt -subj "/C=US/ST=CA/L=San Francisco/O=OpenShift/OU=IT Department/CN=*.example.com"

3. Create a persistent volume on the server. This volume will store the data for your OpenShift environment:

sudo mkdir /var/openshift
sudo chmod 777 /var/openshift

Step 4: Starting OpenShift

Now we're ready to start OpenShift.

1. Start OpenShift using the following command:

sudo openshift start --public-master=https://example.com:8443 --hostname=example.com --volume-dir=/var/openshift --public-master-cert=/etc/ssl/certs/openshift.crt --private-key=/etc/ssl/private/openshift.key

Here are the arguments used in the above command:

• public-master: The external URL of your OpenShift instance.
• hostname: The hostname of your OpenShift instance.
• volume-dir: The directory to store persistent data.
• public-master-cert: The path to your SSL certificate.
• private-key: The path to your SSL private key.

2. Wait for OpenShift to start. You'll see something like this on your terminal:

Starting OpenShift using openshift/origin:v3.11.0 ...
Server Information ...

3. Once OpenShift is started, you can access the OpenShift web console by going to https://example.com:8443.

Conclusion

In this tutorial, we've covered the steps to install and configure OpenShift on Ubuntu Server Latest. OpenShift is a powerful PaaS that can enable developers to create and deploy applications easily.

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