moabukar/nomad-demo

Nomad Demo

Demo repo to show Nomad in action.

Prerequisites

• Nomad installed (https://developer.hashicorp.com/nomad/docs/install)
• Terraform installed (https://developer.hashicorp.com/terraform/downloads)
• Packer installed (https://developer.hashicorp.com/packer/downloads)
• AWS CLI installed (https://docs.aws.amazon.com/cli/latest/userguide/install-cliv2.html)

Run local Nomad cluster

nomad agent -dev

nomad run local/http-echo.nomad

localhost:4646

nomad stop http-echo

Setup

1. Start Nomad

nomad agent -dev -config=config/nomad.hcl

2. Deploy the application

nomad job run nginx.nomad
nomad job status nginx

curl http://$(nomad job status -json nginx | jq -r '.[0].task_groups[0].tasks[0].ip_address'):80
curl http://localhost:8080

Nomad on AWS

cd aws
mv variables.hcl.example variables.hcl

## Build the AMI
packer init image.pkr.hcl
packer build -var-file=variables.hcl image.pkr.hcl


## Terraform
terraform init
terraform apply -var-file=variables.hcl

## Post-setup

```bash
cd aws
./post-setup.sh

export NOMAD_ADDR=$(terraform output -raw lb_address_consul_nomad):4646 && \
  export NOMAD_TOKEN=$(cat nomad.token)


nomad node status

## Cleanup

terraform destroy 

Test with NGINX & Consult with Nomad (works)

./kv_consul_setup.sh

nomad run nginx-consul.nomad

Load balancer with webapp (works)

nomad run webapp.nomad

nomad run nginx.nomad.hcl

nomad status nginx

nomad alloc fs 766 nginx/local/load-balancer.conf

curl nginx.service.consul:8080

Traefik with Webapp (works)

nomad run webapp.nomad.hcl
nomad run traefik.nomad.hcl

nomad status traefik

http://<Your-Traefik-IP-address>:8081

curl http://traefik.service.consul:8080/myapp