Install Docker Engine Centos 7



  1. Install Docker-engine Centos 7
  2. Install Docker Engine Centos 7

Ansible Tower (formerly ‘AWX’) is a web-based solution that makes Ansible even more easy to use for IT teams of all kinds. It’s designed to be the hub for all of your automation tasks.

In this tutorial, you’ll learn how to install and use it on an existing installation of CentOS 7. 64-bit CentOS 7 Droplet; Non-root user with sudo privileges. A CentOS 7 server set up using Initial Setup Guide for CentOS 7 explains how to set this up. Main advantage of PHP 7.x is that it will load your web application faster and will consume less server’s resources like CPU and RAM. By default, PHP 5.4 is available in CentOS 7 and RHEL 7 yum repositories. In this article we will demonstrate how to install latest version of PHP on CentOS 7 and RHEL 7 Servers.

Tower allows you to control access to who can access what, even allowing sharing of SSH credentials without someone being able to transfer those credentials. Inventory can be graphically managed or synced with a wide variety of cloud sources. It logs all of your jobs, integrates well with LDAP, and has an amazing browsable REST API. Command line tools are available for easy integration with Jenkins as well. Provisioning callbacks provide great support for autoscaling topologies.

AWX provides a web-based user interface, REST API, and task engine built on top of Ansible. It is the upstream project for Tower, a commercial derivative of AWX.

Prerequisites

Before you can run a deployment, you’ll need the following installed in your local environment:

Install Docker Engine Centos 7
  • Ansible Requires Version 2.8+
  • Docker
    • A recent version
  • docker Python module
    • This is incompatible with docker-py. If you have previously installed docker-py, please uninstall it.
    • We use this module instead of docker-py because it is what the docker-compose Python module requires.
  • Git Requires Version 1.8.4+
  • Python 3.6+
  • Node 10.x LTS version
    • This is only required if you’re building your own container images with use_container_for_build=false
  • NPM 6.x LTS
    • This is only required if you’re building your own container images with use_container_for_build=false

System Requirements

Install docker-engine centos 7

The system that runs the AWX service will need to satisfy the following requirements

  • At least 4GB of memory
  • At least 2 cpu cores
  • At least 20GB of space
  • Running Docker, Openshift, or Kubernetes
  • If you choose to use an external PostgreSQL database, please note that the minimum version is 10+.

Installation steps:

1. Install Dependencies

yum install -y epel-release

yum remove python-docker-py

yum install -y yum-utils device-mapper-persistent-data lvm2 ansible git python-devel python-pip python-docker-py vim-enhanced

pip install cryptography
pip install jsonschema
pip install docker-compose~=1.23.0
pip install docker –upgrade

2. Install docker

Configure docker ce stable repository.

Install Docker-engine Centos 7

Centos

yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

Installing docker.

yum install docker-ce -y

Start docker service.

systemctl start docker

Enable docker service.

systemctl enable docker

3. Deploy AWX

Clone AWX repo

git clone https://github.com/ansible/awx.git

Clone commercial logos

cd awx/

git clone https://github.com/ansible/awx-logos.git

Configure AWX

cd installer/

$ vim inventory

awx_official=true

Deploy AWX

Install Docker Engine Centos 7

ansible-playbook -i inventory install.yml -vv

Check the status

docker ps -a

AWX is ready and can be accessed from the browser.

http://ipaddress:80/

the default username is “admin” and the password is “password”.

Final checks:

Install Docker Engine Centos 7

  1. verify whether the service is started or not with ss -tlnp | grep 80
  2. make sure your firewall is open for port 80
  3. make sure your OS is using python 3.6+ and pip3

https://github.com/ansible/awx/blob/devel/INSTALL.md