Demo code and microservices for the HashiCorp Consul 101 course.

Email [email protected] or see https://www.hashicorp.com/training for details.

To run both microservices with Docker Compose (but without Consul), run docker compose up.

$ cd demo-consul-101
$ docker-compose up

You can view the operational application dashboard at http://localhost:8080

A subsequent evolution of the application would involve registering each service with Consul and using Consul DNS to configure services to discover each other.

If you have the Consul binary installed locally, you can use the following sequence of commands to run a demo mesh on your local laptop.

Start a local Consul dev agent with:

consul agent -dev -config-dir="./demo-config-localhost" -node=laptop

Start the dashboard-service in a separate shell session.

PORT=9002 go run ./services/dashboard-service/main.go

Start the counting-service in a separate shell session.

PORT=9003 go run ./services/counting-service/main.go

Start a second instance of the counting-service in a separate shell session.

PORT=9004 go run ./services/counting-service/main.go

Start the sidecar proxy for the counting-1 service instance in a separate shell session.

consul connect proxy -sidecar-for counting-1

Start the sidecar proxy for the counting-2 service instance in a separate shell session.

consul connect proxy -sidecar-for counting-2

Start the sidecar proxy for the dashboard service in a separate shell session.

consul connect proxy -sidecar-for dashboard

Now visit the application at localhost:9002.