k3s/docs/getting-started-guides/coreos/cloud-configs/master.yaml

#cloud-config

---
write_files:
- path: /opt/bin/waiter.sh
  owner: root
  content: |
    #! /usr/bin/bash
    until curl http://127.0.0.1:4001/v2/machines; do sleep 2; done    
coreos:
  fleet:
    etcd-servers: http://localhost:4001
    metadata: "role=master"
  flannel:
    interface: eth1
  units:
    - name: setup-network-environment.service
      command: start
      content: |
        [Unit]
        Description=Setup Network Environment
        Documentation=https://github.com/kelseyhightower/setup-network-environment
        Requires=network-online.target
        After=network-online.target

        [Service]
        ExecStartPre=-/usr/bin/mkdir -p /opt/bin
        ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/k8s/setup-network-environment 
        ExecStartPre=/usr/bin/chmod +x /opt/bin/setup-network-environment
        ExecStart=/opt/bin/setup-network-environment
        RemainAfterExit=yes
        Type=oneshot        
    - name: etcd.service
      command: start
      content: |
        [Unit]
        Description=etcd
        Requires=setup-network-environment.service
        After=setup-network-environment.service

        [Service]
        EnvironmentFile=/etc/network-environment
        User=etcd
        PermissionsStartOnly=true
        ExecStart=/usr/bin/etcd \
        --name ${DEFAULT_IPV4} \
        --addr ${DEFAULT_IPV4}:4001 \
        --bind-addr 0.0.0.0 \
        --cluster-active-size 1 \
        --data-dir /var/lib/etcd \
        --http-read-timeout 86400 \
        --peer-addr ${DEFAULT_IPV4}:7001 \
        --snapshot true
        Restart=always
        RestartSec=10s        
    - name: fleet.service
      command: start
    - name: etcd-waiter.service
      command: start
      content: |
        [Unit]
        Description=etcd waiter
        Wants=network-online.target
        Wants=etcd.service
        After=etcd.service
        After=network-online.target
        Before=flanneld.service

        [Service]
        ExecStartPre=/usr/bin/chmod +x /opt/bin/waiter.sh
        ExecStart=/usr/bin/bash /opt/bin/waiter.sh
        RemainAfterExit=true
        Type=oneshot        
    - name: flanneld.service
      command: start
      drop-ins:
        - name: 50-network-config.conf
          content: |
            [Unit]
            Requires=etcd.service
            [Service]
            ExecStartPre=/usr/bin/etcdctl set /coreos.com/network/config '{"Network":"10.244.0.0/16", "Backend": {"Type": "vxlan"}}'            
    - name: docker-cache.service
      command: start
      content: |
        [Unit]
        Description=Docker cache proxy
        Requires=early-docker.service
        After=early-docker.service
        Before=early-docker.target

        [Service]
        Restart=always
        TimeoutStartSec=0
        RestartSec=5
        Environment="TMPDIR=/var/tmp/"
        Environment="DOCKER_HOST=unix:///var/run/early-docker.sock"
        ExecStartPre=-/usr/bin/docker kill docker-registry
        ExecStartPre=-/usr/bin/docker rm docker-registry
        ExecStartPre=/usr/bin/docker pull quay.io/devops/docker-registry:latest
        # GUNICORN_OPTS is an workaround for
        # https://github.com/docker/docker-registry/issues/892
        ExecStart=/usr/bin/docker run --rm --net host --name docker-registry \
            -e STANDALONE=false \
            -e GUNICORN_OPTS=[--preload] \
            -e MIRROR_SOURCE=https://registry-1.docker.io \
            -e MIRROR_SOURCE_INDEX=https://index.docker.io \
            -e MIRROR_TAGS_CACHE_TTL=1800 \
            quay.io/devops/docker-registry:latest        
    - name: docker.service
      drop-ins:
        - name: 51-docker-mirror.conf
          content: |
            [Unit]
            # making sure that docker-cache is up and that flanneld finished
            # startup, otherwise containers won't land in flannel's network...
            Requires=docker-cache.service flanneld.service
            After=docker-cache.service flanneld.service
            [Service]
            Environment=DOCKER_OPTS='--registry-mirror=http://$private_ipv4:5000'            
    - name: kube-apiserver.service
      command: start
      content: |
        [Unit]
        Description=Kubernetes API Server
        Documentation=https://github.com/GoogleCloudPlatform/kubernetes
        Requires=etcd.service
        After=etcd.service

        [Service]
        ExecStartPre=-/usr/bin/mkdir -p /opt/bin
        ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/kubernetes-release/release/v0.11.0/bin/linux/amd64/kube-apiserver
        ExecStartPre=/usr/bin/chmod +x /opt/bin/kube-apiserver
        ExecStart=/opt/bin/kube-apiserver \
        --address=0.0.0.0 \
        --port=8080 \
        --portal_net=10.100.0.0/16 \
        --etcd_servers=http://127.0.0.1:4001 \
        --public_address_override=$private_ipv4 \
        --logtostderr=true
        Restart=always
        RestartSec=10        
    - name: kube-controller-manager.service
      command: start
      content: |
        [Unit]
        Description=Kubernetes Controller Manager
        Documentation=https://github.com/GoogleCloudPlatform/kubernetes
        Requires=kube-apiserver.service
        After=kube-apiserver.service

        [Service]
        ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/kubernetes-release/release/v0.11.0/bin/linux/amd64/kube-controller-manager
        ExecStartPre=/usr/bin/chmod +x /opt/bin/kube-controller-manager
        ExecStart=/opt/bin/kube-controller-manager \
        --master=127.0.0.1:8080 \
        --logtostderr=true
        Restart=always
        RestartSec=10        
    - name: kube-scheduler.service
      command: start
      content: |
        [Unit]
        Description=Kubernetes Scheduler
        Documentation=https://github.com/GoogleCloudPlatform/kubernetes
        Requires=kube-apiserver.service
        After=kube-apiserver.service

        [Service]
        ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/kubernetes-release/release/v0.11.0/bin/linux/amd64/kube-scheduler
        ExecStartPre=/usr/bin/chmod +x /opt/bin/kube-scheduler
        ExecStart=/opt/bin/kube-scheduler --master=127.0.0.1:8080
        Restart=always
        RestartSec=10        
    - name: kube-register.service
      command: start
      content: |
        [Unit]
        Description=Kubernetes Registration Service
        Documentation=https://github.com/kelseyhightower/kube-register
        Requires=kube-apiserver.service
        After=kube-apiserver.service
        Requires=fleet.service
        After=fleet.service

        [Service]
        ExecStartPre=/usr/bin/wget -N -P /opt/bin https://storage.googleapis.com/k8s/kube-register
        ExecStartPre=/usr/bin/chmod +x /opt/bin/kube-register
        ExecStart=/opt/bin/kube-register \
        --metadata=role=node \
        --fleet-endpoint=unix:///var/run/fleet.sock \
        --api-endpoint=http://127.0.0.1:8080
        Restart=always
        RestartSec=10        
  update:
    group: alpha
    reboot-strategy: off