Ansible

Step By Step Details

• Step 01 - Creating EC2 Instances for Ansible - Manually and with Terraform
• Step 02 - Setting Ansible Project with cfg and ansible hosts
• Step 03 - Playing with Ansible Commands
• Step 04 - Playing with Ansible Host File and Custom Groups
• Step 05 - Creating an Ansible Playbook for Ping
• Step 06 - Understanding Ansible Terminology - Control Node, Managed Nodes, Inventory
• Step 07 - Creating New Ansible Playbook for Executing Shell Commands
• Step 08 - Playing with Ansible Variables
• Step 09 - Creating New Ansible Playbook for Understanding Ansible Facts
• Step 10 - Creating New Ansible Playbook for Installing Apache and Serving HTML
• Step 11 - Reuse and Executing Multiple Ansible Playbooks
• Step 12 - Understanding Conditionals and Loops with Ansible
• Step 13 - Configuring EC2 Dynamic Inventory with Ansible
• Step 14 - Creating AWS EC2 Instances with Ansible
• Step 15 - Providing Declarative Configuration with Ansible
• Step 16 - Deleting all AWS EC2 Instances

Prerequisites

• 3 EC2 Instances

  • 2 using Terraform
  • 1 Manually
  • You can use which ever approach you are comfortable with

• EC2 Keys - ls ~/aws/aws_keys/default-ec2.pem

• AWS CLI - aws configure

# or
export AWS_ACCESS_KEY_ID=**************
export AWS_SECRET_ACCESS_KEY=**************

• boto3 and botocore - For EC2 Dynamic Inventory and Creating EC2 Instances

# TEst
python
# boto3 quick start
> import boto3
> client = boto3.client('ec2')

Create EC2 Instances using Terraform

cd terraform/backup/09-multiple-ec2-instances
export AWS_ACCESS_KEY_ID=**************
export AWS_SECRET_ACCESS_KEY=**************
terraform init
terraform apply
ls ~/aws/aws_keys/ # Make sure that the keys file is present

Ansible Commands

cd /in28Minutes/git/devops-master-class/ansible 
ansible --version
ansible -m ping all
ansible all -a "whoami"
ansible all -a "uname"
ssh -vvv -i ~/aws/aws_keys/default-ec2.pem [email protected]
ls ~/aws/aws_keys/default-ec2.pem
chmod 400 /Users/rangaraokaranam/aws/aws_keys/default-ec2.pem
ansible all -a "uname"
ansible all -a "uname -a"
ansible all -a "pwd"
ansible all -a "python --version"
ansible dev -a "python --version"
ansible qa -a "python --version"
ansible first -a "python --version"
ansible groupofgroups -a "python --version"
ansible devsubset -a "python --version"
ansible --list-host all
ansible --list-host dev
ansible --list-host first
ansible --list-host \!first
ansible --list-host qa:dev
ansible-playbook playbooks/01-ping.yml
ansible-playbook playbooks/02-shell.yml 
ansible-playbook playbooks/03-variables.yml 
ansible-playbook playbooks/03-variables.yml -e variable1=CommandLineValue
ansible-playbook playbooks/04-ansible-facts.yml 
ansible-playbook playbooks/05-install-apache.yml 
ansible-playbook playbooks/06-playbooks.yml 
ansible-playbook playbooks/06-playbooks.yml --list-tasks
ansible-playbook playbooks/06-playbooks.yml --list-hosts
ansible-playbook playbooks/06-playbooks.yml --list-tags
ansible-playbook -l dev playbooks/01-ping.yml
ansible-playbook playbooks/07-conditionals-and-loops.yml 
ansible-inventory --list
ansible-inventory --graph
ansible-playbook playbooks/08-dynamic-inventory-ping.yml 
ansible-playbook playbooks/09-create-ec2.yml