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Round Robin

A simple project demonstrating the round robin load balancing features of the NGINX web server using chef-zero to deploy the Web and App servers involved.

Requirements

To run this project from your workstation you will need the following;

  • Ruby 2.0 or above installed
  • Terraform 6.8 or above installed
  • AWS Secret Key and Access Key provided by maintainer (DO NOT check-in AWS creds into GitHub)
  • The "mega_syndicate_west.pem" placed in the keys directory
  • Your workstation IP. You can use https://www.1and1.co.uk/ip-address to identify the address to use.

Getting Started

  1. Clone this GitHub Repository to your machine

  2. Navigate to the base directory and place the mega_syndicate_west.pemin the keys directory

  3. Within the same directory edit the local.tfvars ip_for_ssh value with your workstation's IP address e.g. "93.232.83.232"

  4. Again, update the local.tfvars this time with the AWS secret and access keys provided

  5. Run the Rake task to perform the provision, this will deploy the Web server and two App servers with the Sample Go code deployed.

Example;

	rake ENVIRONMENT=local provision

Finally, open a browser and enter the value of the web_server_address given in the output of the provision... Or use curl on the web_server_address to test it's round robin functionality :)

Integration tests

The inspec tests will ensure the functionaility of the web and app servers is expected and ensures all instances are secure. Run tests locally after performing the provision/build

	rake ENVIRONMENT=local test

Once done please decommission the environment by running

	rake ENVIRONMENT=local destroy

CI with Jenkins

You can keep up with the CI of this project here;

All steps are defined in the Jenkinsfile

TODO

  • Establish an AMI build for patch updates to image (via Packer)
  • Neglect chef-zero and use chef server

Contributing

e.g.

  1. Fork the repository on Github

  2. Create a named feature branch (like add_component_x)

  3. Write your change

  4. Write tests for your change (if applicable)

  5. Run the tests, ensuring they all pass

  6. Submit a Pull Request using Github

License and Authors

Authors: James Nduka