MediaWiki Installation Using BlueGreen Deployment & Rolling Update

Lab Exercise

Problem Statement

We want to automate the deployment of MediaWiki using.

• CFT with Any Configuration Management Tool (Only for AWS). If any -- Choose only one of your comfort.
• The above automation should support CI/CD practices of chosen deployment style like Rolling Update or BlueGreen Deployment. (Optional)

Technologies Used

This Technologies used in this deployment is

• Yaml Scripting
• Python
• Shell Scripting
• Cloud Formation Template
• Ansible Playbooks

Deployment Templates Available

• Blue-Green Deployment
• Rolling Update Template

Deployment Steps

File Details

• blueGreen.yaml - Cloud Formation template for blue green deployment.
• rollingUpdate.yaml - Cloud Formation template for rolling deployment.
• parameters.json - The parameters file for blue green deployment.
• mediawikiInstallationSteps.txt - Manual steps for mediawiki installation.
• dynamicInventory.py - To create dynamic Inventory based on the ec2 tags.
• playbook.yaml - Ansible playbook for mediaWiki installation.
• seup.sh - Setup file for deployment.

Deployment Process

Running in a single Step

• To complete the deployment in a single step

sh setup.sh

Running Each File Seperately

• To Deploy the Cloud Formation Stack using cli

echo "Creating the stack"
aws cloudformation create-stack --stack-name demo-stack --template-body blueGreen.yaml --parameters parameters.json

• To Create the inventory file dynamically

echo "Dynamically create the invertory file for ansible"
python3 dynamicInventory.py demo-stack us-east-1

• To install mediaWiki using ansible.

echo "Run Ansible Playbook to deploy mediaWiki"
ansible-playbook playbook.yaml -i invertory.txt

Outputs

cloud Formation Deployment

Dynamic Inventory File

Ansible Output

MediaWiki Installation

Architecture

Blue Green Mode

Rolling Update Mode

Other Possible Solutions

• We can use userdata to install the mediaWiki but the creation of userdata becomes more complex and there will be more chances to fail in b/w the run as it contains many steps.

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• Due to time contraint the deployment is script is written as possible as i can. With more time we can enhance the script and modularize it.

Other Blue Green deployments

Blue Green Deployment using ECS

• https://github.com/sumanth979/AWS_BlueGreenDeployment/tree/master/Deploying_Application_using_ECS

My Other Works

• https://github.com/sumanth979