Infra challenge

A repository contains all project files for creating HA environment

Requirements

• Download and install VirtualBox.
• Download and install Vagrant.
• [Mac/Linux only] Install Ansible.
• Had keys id_rsa and id_rsa.pub in your ~/.ssh/
• Run ansible-galaxy install -r requirements.yml in this directory to get the required Ansible collections.
• Run vagrant plugin install vagrant-docker-compose to get the required vagrant plugin.

Role Variables

There is two files with variables group_vars/workers.yaml and group_vars/proxy.yaml

group_vars/workers.yaml:

• appImageName - a variable to specify image name for docker compose
• vmHostPort - a variable to specify the host port for forwarding
• containerPort - a variable to specify the container port for forwarding

group_vars/proxy.yaml:

• appImageName - a variable to specify image name for docker compose
• vmHostPort - a variable to specify the host port for forwarding
• containerPort - a variable to specify the container port for forwarding
• backendPort - a variable to specify the port for connecting to the backend

Dependencies

Ansible:

• community.docker

Vagrant:

• docker-compose

Initialization

1. Run vagrant up
2. Run ansible-playbook playbooks/main.yml -i environment/hosts.ini
3. curl 192.168.70.5

To perform maintenance without interrupting user operations, was built architecture with 3 application servers and 1 proxy, you can do maintenance for any of servers and it is didn't affect user operations due to proxy. The infrastructure is fairly simple, with the following structure:

                                          -----------------------
                                         | Nginx (192.168.70.5) |
                                          -----------------------
                                                    |
                     ________________________________________________________
                    |                               |                        |
          ----------------------         ----------------------      ----------------------
         | App (192.168.70.2)   |       | App (192.168.70.3)   |    | App  (192.168.70.4)  |
          ----------------------         ----------------------      ----------------------