How to install Terraform on Red Hat Linux | TerraForm Installation on Red Hat Linux

Terraform is an infrastructure as a code tool used for provisioning infrastructure on most of the cloud platforms. 

• Open source
• Can setup entire infrastructure by writing Terraform scripts/templates. 
• Based on declarative model
• Uses Hashi Corp Language(HCL) which is JSON format

You can watch this on YouTube channel:

Please find steps for installing Terraform On Enterprise Red Hat Linux.

Create a working directory

sudo mkdir -p /opt/terraform

cd /opt/terraform

Install wget utility
sudo yum install wget -y

Download Terraform from Hasicorp website

sudo wget https://releases.hashicorp.com/terraform/1.0.5/terraform_1.0.5_linux_amd64.zip

Install unzip utility
sudo yum install unzip -y

Unzip Terraform Zip file
sudo unzip terraform_1.0.5_linux_amd64.zip

Add terraform to PATH
sudo mv /opt/terraform/terraform /usr/bin/

terraform -version

Terraform v1.0.5

on linux_amd64

this should show version of Terraform.

Docker Installation on Red Hat Linux 8 | Install Docker on Linux

Find steps for installing Docker on Red Hat Enterprise Linux 8

Enable Docker Registry
sudo dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo

Install Docker CE using dnf comman
sudo dnf list docker-ce
sudo dnf install docker-ce -y
sudo systemctl start docker

sudo systemctl enable docker

sudo systemctl status docker

docker --version

sudo docker run hello-world

Steps for installing Docker-compose

sudo curl -L "https://github.com/docker/compose/releases/download/1.23.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

sudo chmod +x /usr/local/bin/docker-compose

docker-compose --version

Add the docker group to current user
sudo usermod -aG docker $USER

Logout and login again.

How to configure Nexus 3 as private Docker Registry | How to host private Docker Registry in Nexus 3

Nexus 3 is one of the popular binary repository managers. It can be also used to store Docker images as well besides storing binaries such as WARs, EARs, Jars, DLLs and Exes.

Let us see how to configure Nexus to host as private Docker registry.

Pre-requisites:

• Make sure Nexus is successfully configured, it is up and running.
• Also do open port 8085 open as well besides port 8081 for Nexus.
• Docker is setup and running.

Steps to configure Nexus 3 as Docker Registry:

1. Login to Nexus and click on Server Administration link at the top of the window. Click on Repositories.

2. Now click on create repository

3. Choose docker hosted repository

4. Choose the value as mentioned:

5. Click on Create repository.

Configure Realm
6. Move Docker Bearer Token realm to right by clicking on >

This settings allows docker repository to have anonymous read enabled.

7. after moving save it.

Please click below link to know how to create Docker image and push docker images into Nexus

https://www.coachdevops.com/2020/02/how-to-upload-docker-images-into-nexus.html