A cloud-init file to spin up a single node Nomad + Consul dev environment.

nomad-cloud-init.yaml

apt:
  sources:
    hashicorp:
      keyid: 798AEC654E5C15428C8E42EEAA16FCBCA621E701 # fingerprint of https://apt.releases.hashicorp.com/gpg to fetch from Ubuntu Keyserver
      source: "deb [signed-by=$KEY_FILE] https://apt.releases.hashicorp.com $RELEASE main"
    docker:
      keyid: 9DC858229FC7DD38854AE2D88D81803C0EBFCD88
      source: "deb [signed-by=$KEY_FILE] https://download.docker.com/linux/ubuntu $RELEASE stable"
package_update: true
packages:
  - nomad
  - consul
  - unzip
  - jq
  - docker-ce
  - docker-ce-cli
  - containerd.io
write_files:
  - path: /etc/consul.d/server.hcl
    defer: true
    content: |
      server = true
      bootstrap = true
      bind_addr = "{{ GetPrivateIP }}"
      client_addr = "0.0.0.0"
      retry_join = ["{{ GetPrivateIP }}"]
      connect {
        enabled = true
      }
      ports {
        grpc = 8502
      }
      ui_config {
        enabled = true
      }
  - content: |
      net.bridge.bridge-nf-call-arptables = 1
      net.bridge.bridge-nf-call-ip6tables = 1
      net.bridge.bridge-nf-call-iptables = 1
    path: /etc/sysctl.d/bridge.conf
runcmd:
  # CNI Plugins Installation
  # ref: https://developer.hashicorp.com/nomad/docs/integrations/consul-connect#cni-plugins
  - curl  -L -o cni-plugins.tgz "https://github.com/containernetworking/plugins/releases/download/v1.0.0/cni-plugins-linux-$( [ $(uname -m) = aarch64 ] && echo arm64 || echo amd64)"-v1.0.0.tgz
  - mkdir -p /opt/cni/bin
  - tar -C /opt/cni/bin -xzf cni-plugins.tgz
  - modprobe br_netfilter
  - echo 1 | sudo tee /proc/sys/net/bridge/bridge-nf-call-arptables
  - echo 1 | sudo tee /proc/sys/net/bridge/bridge-nf-call-ip6tables
  - echo 1 | sudo tee /proc/sys/net/bridge/bridge-nf-call-iptables
  - usermod -aG docker ubuntu
  - systemctl start consul && systemctl enable consul
  - systemctl start nomad && systemctl enable nomad