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Architectural Sample for Infarustructure Provisioning

Docker swarm

Requirements:

  • AWS Account as user
  • Terraform configured ( Could use the docker compose file to set it up)
  • AWS CLI installed and credentials configured.
  • Ansible setup

SETUP

TO DO TASKS

  • Building and pushing the Docker images to Amazon ECR
  • Setting up Infrastructure
  • Setting up CICD pipeline
  • Ensuring all the services are up and running
  • Testing the solution.
  • Creating DNS Record for the Load Balancer's
  • Setting up ssl security
  • Monitoring and tracing

Click the 'Use this Template' button for your initial setup

Setting up the infrastructure

Terraform Readme is located at terraform/TERRAFORM_README.md

To run all the Terraform commands at once

Make the file terraform_script.sh file executable ('chmod +x terraform_script.sh') and execute it by running:

./terraform_script.sh

This provisions the infrastructure for the first time,and from the output copy those ip addresses key to the hosts file under inventoy directory.inventory

Once all the configurations is set,run the terraform script again ./terraform_script.sh then this command from the ansible playbook which deploys the cluster

ansible-playbook -i inventory/hosts playbook.yml

The swarm cluster should now be ready.To chck the cluster using ssh in manager node:

ssh -i your_key_file.pem ubuntu@manager_public_ip
sudo docker node ls`

BLABLABLA

To run the terraform files

terraform init

To set the resources to be provisioned use terraform plan -var-file=tfvars/dev.tfvars && terraform apply -var-file=tfvars/dev.tfvars

Doing terraform apply provisions the Docker Swarm resources, VPC with 3 instances (Worker and master) The shell script install_dockercompose.sh installs docker and docker compose in your servers.

Configuration Management

Ansible script responsible for creating the swarm cluster (a manager and two worker node)

The inventory/hosts directory should be changed to the ec2 instances ip addresses to enable ssh.

Playbook command:

ansible-playbook -i inventory/hosts playbook.yml

AOB:

  1. terraform init
  2. terraform plan -var-file=tfvars/dev.tfvars
  3. terraform apply -var-file=tfvars/dev.tfvar

To terminate the infrastructure : terraform destroy -var-file=tfvars/dev.tfvars

Note:

  • To generate keys ssh-keygen cat ./ssh/id_rsa.pub aws configure --profile (set your profile)

  • Incase faced with lock state key. Solution

Others incase of setting up Terraform using Docker compose

docker-compose up

docker run -d -it --name terraform-ubuntu ubuntu