Hand-crafted cloud-config.yml to co-locate Kontena Master & The Only Initial Node on the same Packet server

cloud-config.yml

#cloud-config
write_files:
  - path: /etc/kontena-server.env
    permissions: 0600
    owner: root
    content: |
      KONTENA_VERSION=latest
      KONTENA_VAULT_KEY=ghV5TK5yl4zsfJlW4sWuhdPMc1ngLFAOzDYJwTSnjQpK096VWwDcTD5BKrV0ZyNZ
      KONTENA_VAULT_IV=usPWA6tbnzdt0sjZI0eYFVaqZgk4pgQqOlPxrpGkOJcv9yHTRhpMW5N3ugKp7wHe
      KONTENA_INITIAL_ADMIN_CODE=CoreOS999
      SSL_CERT="/etc/kontena-server.pem"

  - path: /opt/bin/kontena-haproxy.sh
    permissions: 0755
    owner: root
    content: |
      #!/bin/sh
      if [ -n "$SSL_CERT" ]; then
        SSL_CERT=$(awk 1 ORS='\\n' $SSL_CERT)
      else
        SSL_CERT="**None**"
      fi
      /usr/bin/docker run --name=kontena-server-haproxy \
        --link kontena-server-api:kontena-server-api \
        -e SSL_CERT="$SSL_CERT" -e BACKEND_PORT=9292 \
        -p 8080:80 -p 443:443 kontena/haproxy:latest

  - path: /etc/kontena-agent.env
    permissions: 0600
    owner: root
    content: |
      KONTENA_URI="http://$public_ipv4:8080"
      KONTENA_TOKEN="YeNSe69as33PVhfFT1ywv5IxjRpO5WJ6TQj3mSD8BHV/Xx/zeqFspeMKHPOdakifdN2DjIkMf0J2PDftfCrRDw=="
      KONTENA_PEER_INTERFACE=eth1
      KONTENA_VERSION=latest
      KONTENA_PRIVATE_IP=$private_ipv4

  - path: /etc/systemd/system/docker.service.d/50-kontena.conf
    content: |
        [Service]
        Environment='DOCKER_OPTS=--insecure-registry="10.81.0.0/16" --bip="172.17.43.1/16"'

  - path: /etc/sysctl.d/99-inotify.conf
    owner: root
    permissions: 0644
    content: |
      fs.inotify.max_user_instances = 8192

  - path: /etc/resolv.conf
    permissions: 0644
    owner: root
    content: |
      nameserver 172.17.43.1
      nameserver 8.8.8.8
      nameserver 8.8.4.4

coreos:
  units:
    - name: kontena-server-mongo.service
      command: start
      enable: true
      content: |
        [Unit]
        Description=kontena-server-mongo
        After=network-online.target
        After=docker.service
        Description=Kontena Server MongoDB
        Documentation=http://www.mongodb.org/
        Requires=network-online.target
        Requires=docker.service

        [Service]
        Restart=always
        RestartSec=5
        ExecStartPre=/usr/bin/docker pull mongo:3.0
        ExecStartPre=-/usr/bin/docker create --name=kontena-server-mongo-data mongo:3.0
        ExecStartPre=-/usr/bin/docker stop kontena-server-mongo
        ExecStartPre=-/usr/bin/docker rm kontena-server-mongo
        ExecStart=/usr/bin/docker run --name=kontena-server-mongo \
            --volumes-from=kontena-server-mongo-data \
            mongo:3.0 mongod --smallfiles
        ExecStop=/usr/bin/docker stop kontena-server-mongo

    - name: kontena-server-api.service
      command: start
      enable: true
      content: |
        [Unit]
        Description=kontena-server-api
        After=network-online.target
        After=docker.service
        Description=Kontena Agent
        Documentation=http://www.kontena.io/
        Requires=network-online.target
        Requires=docker.service

        [Service]
        Restart=always
        RestartSec=5
        EnvironmentFile=/etc/kontena-server.env
        ExecStartPre=-/usr/bin/docker stop kontena-server-api
        ExecStartPre=-/usr/bin/docker rm kontena-server-api
        ExecStartPre=/usr/bin/docker pull kontena/server:${KONTENA_VERSION}
        ExecStart=/usr/bin/docker run --name kontena-server-api \
            --link kontena-server-mongo:mongodb \
            -e MONGODB_URI=mongodb://mongodb:27017/kontena_server \
            -e VAULT_KEY=${KONTENA_VAULT_KEY} -e VAULT_IV=${KONTENA_VAULT_IV} \
            -e INITIAL_ADMIN_CODE=${KONTENA_INITIAL_ADMIN_CODE} \
            kontena/server:${KONTENA_VERSION}
        ExecStop=/usr/bin/docker stop kontena-server-api

    - name: kontena-server-haproxy.service
      command: start
      enable: true
      content: |
        [Unit]
        Description=kontena-server-haproxy
        After=network-online.target
        After=docker.service
        Description=Kontena Server HAProxy
        Documentation=http://www.kontena.io/
        Requires=network-online.target
        Requires=docker.service

        [Service]
        Restart=always
        RestartSec=5
        EnvironmentFile=/etc/kontena-server.env
        ExecStartPre=-/usr/bin/docker stop kontena-server-haproxy
        ExecStartPre=-/usr/bin/docker rm kontena-server-haproxy
        ExecStartPre=/usr/bin/docker pull kontena/haproxy:latest
        ExecStart=/opt/bin/kontena-haproxy.sh
        ExecStop=/usr/bin/docker stop kontena-server-haproxy

    - name: etcd2.service
      command: start
      enable: true
      content: |
        Description=etcd 2.0
        After=docker.service
        [Service]
        Restart=always
        RestartSec=5
        ExecStart=/usr/bin/docker logs --tail=10 -f kontena-etcd

    - name: 50-docker.network
      mask: true

    - name: 50-docker-veth.network
      mask: true

    - name: zz-default.network
      mask: true

    - name: kontena-agent.service
      command: start
      enable: true
      content: |
        [Unit]
        Description=kontena-agent
        After=network-online.target
        After=docker.service
        Description=Kontena Agent
        Documentation=http://www.kontena.io/
        Requires=network-online.target
        Requires=docker.service

        [Service]
        Restart=always
        RestartSec=5
        EnvironmentFile=/etc/kontena-agent.env
        ExecStartPre=-/usr/bin/docker stop kontena-agent
        ExecStartPre=-/usr/bin/docker rm kontena-agent
        ExecStartPre=/usr/bin/docker pull kontena/agent:${KONTENA_VERSION}
        ExecStart=/usr/bin/docker run --name kontena-agent \
            -e KONTENA_URI=${KONTENA_URI} \
            -e KONTENA_TOKEN=${KONTENA_TOKEN} \
            -e KONTENA_PEER_INTERFACE=${KONTENA_PEER_INTERFACE} \
            -e KONTENA_PRIVATE_IP=${KONTENA_PRIVATE_IP} \
            -v=/var/run/docker.sock:/var/run/docker.sock \
            -v=/etc/kontena-agent.env:/etc/kontena.env \
            --net=host \
            kontena/agent:${KONTENA_VERSION}

New values for settings keys, such as KONTENA_VAULT_KEY and KONTENA_VAULT_IV can be generated using cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 64 | head -n 1 command.

You also might want to change KONTENA_INITIAL_ADMIN_CODE with something else that is closer to your heart.

You also might want to change KONTENA_TOKEN with some other randomly generated value.

Also note, that Kontena Master in this configuration is available on port 8080 (http) while Kontena LB can be scheduled on port 80 (http) just as you would like it to be in a standard configuration.