Ansible playbook to install OpenJDK 8 on Ubuntu - Install OpenJDK 8 using Ansible playbook

 Here below is ansible playbook to install Open JDK 8 on Ubuntu:

---
- hosts: Java_Group

  tasks:
  - name: Update APT package manager repositories cache
    become: true
    apt:
      update_cache: yes

  - name: Install OpenJDK Java
    become: yes
    apt:
      name: "{{ item }}"
      state: present
    with_items:
     openjdk-8-jdk

How to install Jenkins on Ubuntu - Install Jenkins Ubuntu

Please follow steps to install Java, Jenkins on Ubuntu EC2 we provisioned in the class.(use git bash or ITerm window). You need to execute below steps on Ubuntu Ec2.

You need to start with Java installation

Open JDK 8 on Ubuntu

sudo apt-get update

sudo apt-get install default-jdk -y

Once install java, enter the below command

Verify Java version

java -version

openjdk version "1.8.0_191"
OpenJDK Runtime Environment (build 1.8.0_191-8u191-b12-2ubuntu0.16.04.1-b12)
OpenJDK 64-Bit Server VM (build 25.191-b12, mixed mode)

Now lets do Jenkins installation

Jenkins (make sure you open port number - 8080 in security rules, edit inbound rules)

wget -q -O - https://pkg.jenkins.io/debian/jenkins-ci.org.key | sudo apt-key add -

echo deb http://pkg.jenkins.io/debian-stable binary/ | sudo tee /etc/apt/sources.list.d/jenkins.list

sudo apt-get update

sudo apt-get install jenkins -y

Ansible Vs Puppet - What is the difference between Ansible and Puppet

This is one of the common DevOps interview questions. What is the difference between Ansible and Puppet? When will you choose Ansible over Puppet?

	Ansible	Puppet
Introduced	2012	2005
Written in?	Python	Java & Ruby
Syntax	Playbooks(YAML file)	Domain specific language
Model	Push	Pull
Architecture	Agent-less	Client/server
Deployments	Fast, simple deployments	Larger, complex deployments
Commercial version	Ansible Tower	Puppet Enterprise
Scheduling	not supported in free version	Default time 30 mins in Open Source puppet