kubernetes/cluster/gce/gci/master.yaml

#cloud-config

users:
- name: etcd
  homedir: /var/etcd
  lock_passwd: true
  ssh_redirect_user: true

- name: kube-bootstrap-logs-forwarder
  gecos: User the kube-bootstrap-logs-forwarder.service runs as.
  system: true

write_files:
  - path: /etc/systemd/system/kube-bootstrap-logs-forwarder.service
    permissions: 0644
    owner: root
    content: |
      [Unit]
      Description=Forwards Kubernetes bootstrap logs to serial port.
      Before=kube-master-installation.service

      [Service]
      User=kube-bootstrap-logs-forwarder
      Group=systemd-journal
      SupplementaryGroups=serial
      ExecStart=journalctl --no-tail --no-pager --follow --utc --output short-iso --unit kube-master-installation --unit kube-master-configuration --unit kubelet
      StandardOutput=tty
      TTYPath=/dev/ttyS2

      [Install]
      WantedBy=kubernetes.target      

  - path: /etc/systemd/system/kube-master-installation.service
    permissions: 0644
    owner: root
    content: |
      [Unit]
      Description=Download and install k8s binaries and configurations
      Requires=network-online.target
      After=network-online.target

      [Service]
      Type=oneshot
      RemainAfterExit=yes
      ExecStartPre=/bin/mkdir -p /home/kubernetes/bin
      ExecStartPre=/bin/mount --bind /home/kubernetes/bin /home/kubernetes/bin
      ExecStartPre=/bin/mount -o remount,exec /home/kubernetes/bin
      ExecStartPre=/usr/bin/curl --fail --retry 600 --retry-delay 3 --retry-connrefused --connect-timeout 10 --silent --show-error -H "X-Google-Metadata-Request: True" -o /home/kubernetes/bin/configure.sh http://metadata.google.internal/computeMetadata/v1/instance/attributes/configure-sh
      ExecStartPre=/bin/chmod 544 /home/kubernetes/bin/configure.sh
      ExecStart=/home/kubernetes/bin/configure.sh

      [Install]
      WantedBy=kubernetes.target      

  - path: /etc/systemd/system/kube-master-internal-route.service
    permissions: 0644
    owner: root
    content: |
      [Unit]
      Description=Configure kube internal route
      Requires=kube-master-installation.service
      After=kube-master-installation.service

      [Service]
      Type=oneshot
      RemainAfterExit=yes
      ExecStartPre=/usr/bin/curl --fail --retry 5 --retry-delay 3 --retry-connrefused --connect-timeout 10 --silent --show-error -H "X-Google-Metadata-Request: True" -o /home/kubernetes/bin/kube-master-internal-route.sh http://metadata.google.internal/computeMetadata/v1/instance/attributes/kube-master-internal-route
      ExecStartPre=/bin/chmod 544 /home/kubernetes/bin/kube-master-internal-route.sh
      ExecStart=/home/kubernetes/bin/kube-master-internal-route.sh

      [Install]
      WantedBy=kubernetes.target      

  - path: /etc/systemd/system/kube-master-configuration.service
    permissions: 0644
    owner: root
    content: |
      [Unit]
      Description=Configure kubernetes master
      Requires=kube-master-installation.service
      After=kube-master-installation.service

      [Service]
      Type=oneshot
      RemainAfterExit=yes
      ExecStartPre=/bin/chmod 544 /home/kubernetes/bin/configure-helper.sh
      ExecStart=/home/kubernetes/bin/configure-helper.sh
      ExecStartPost=systemctl stop kube-bootstrap-logs-forwarder.service

      [Install]
      WantedBy=kubernetes.target      

  - path: /etc/systemd/system/kube-container-runtime-monitor.service
    permissions: 0644
    owner: root
    content: |
      [Unit]
      Description=Kubernetes health monitoring for container runtime
      After=kube-master-configuration.service

      [Service]
      Restart=always
      RestartSec=10
      RemainAfterExit=yes
      ExecStartPre=/bin/chmod 544 /home/kubernetes/bin/health-monitor.sh
      ExecStart=/home/kubernetes/bin/health-monitor.sh container-runtime

      [Install]
      WantedBy=kubernetes.target      

  - path: /etc/systemd/system/kubelet-monitor.service
    permissions: 0644
    owner: root
    content: |
      [Unit]
      Description=Kubernetes health monitoring for kubelet
      After=kube-master-configuration.service

      [Service]
      Restart=always
      RestartSec=10
      RemainAfterExit=yes
      ExecStartPre=/bin/chmod 544 /home/kubernetes/bin/health-monitor.sh
      ExecStart=/home/kubernetes/bin/health-monitor.sh kubelet

      [Install]
      WantedBy=kubernetes.target      

  - path: /etc/systemd/system/kube-logrotate.timer
    permissions: 0644
    owner: root
    content: |
      [Unit]
      Description=kube-logrotate invocation

      [Timer]
      OnCalendar=*-*-* *:00/5:00

      [Install]
      WantedBy=kubernetes.target      

  - path: /etc/systemd/system/kube-logrotate.service
    permissions: 0644
    owner: root
    content: |
      [Unit]
      Description=Kubernetes log rotation
      After=kube-master-configuration.service

      [Service]
      Type=oneshot
      ExecStart=-/usr/sbin/logrotate /etc/logrotate.conf

      [Install]
      WantedBy=kubernetes.target      

  - path: /etc/systemd/system/kubernetes.target
    permissions: 0644
    owner: root
    content: |
      [Unit]
      Description=Kubernetes

      [Install]
      WantedBy=multi-user.target      

runcmd:
 - systemctl daemon-reload
 - systemctl enable kube-bootstrap-logs-forwarder.service
 - systemctl enable kube-master-installation.service
 - systemctl enable kube-master-internal-route.service
 - systemctl enable kube-master-configuration.service
 - systemctl enable kube-container-runtime-monitor.service
 - systemctl enable kubelet-monitor.service
 - systemctl enable kube-logrotate.timer
 - systemctl enable kube-logrotate.service
 - systemctl enable kubernetes.target
 - systemctl start kubernetes.target