Architecture

The diagram above depics the infrastrucure we are going to be setting up. Using Ansible, a configuration management tool, we will be deploying a webapp to several host nodes.

At a high level, our webapp is said to be stored in a github repo and has to be deployed to webservers. Here's how.

• We will create a common user in master node and all host nodes
• Set a password for the user and configure password authentication
• Give newly created user Sudo rights on all nodes
• Install nano editor on all nodes as we will be using CentOS. PS: this is not required for amazon Linux2
• Install ansible on master node only
• Install apache to serve the webapp on all nodes
• Pull the webapp from github into the ansible master node
• Configure the master node to ssh into all host nodes without password prompt by creating an internal keypair in the master node and sharing with host nodes.
• Create an inventory in the master node containing the webservers
• Create and run an ansible playbook to deploy the webapp to hostnodes through a series of tasks...