typhoon/digital-ocean/container-linux/kubernetes/cl/controller.yaml

---
systemd:
  units:
    - name: etcd-member.service
      enable: true
      dropins:
        - name: 40-etcd-cluster.conf
          contents: |
            [Service]
            Environment="ETCD_IMAGE_TAG=v3.4.3"
            Environment="ETCD_NAME=${etcd_name}"
            Environment="ETCD_ADVERTISE_CLIENT_URLS=https://${etcd_domain}:2379"
            Environment="ETCD_INITIAL_ADVERTISE_PEER_URLS=https://${etcd_domain}:2380"
            Environment="ETCD_LISTEN_CLIENT_URLS=https://0.0.0.0:2379"
            Environment="ETCD_LISTEN_PEER_URLS=https://0.0.0.0:2380"
            Environment="ETCD_LISTEN_METRICS_URLS=http://0.0.0.0:2381"
            Environment="ETCD_INITIAL_CLUSTER=${etcd_initial_cluster}"
            Environment="ETCD_STRICT_RECONFIG_CHECK=true"
            Environment="ETCD_SSL_DIR=/etc/ssl/etcd"
            Environment="ETCD_TRUSTED_CA_FILE=/etc/ssl/certs/etcd/server-ca.crt"
            Environment="ETCD_CERT_FILE=/etc/ssl/certs/etcd/server.crt"
            Environment="ETCD_KEY_FILE=/etc/ssl/certs/etcd/server.key"
            Environment="ETCD_CLIENT_CERT_AUTH=true"
            Environment="ETCD_PEER_TRUSTED_CA_FILE=/etc/ssl/certs/etcd/peer-ca.crt"
            Environment="ETCD_PEER_CERT_FILE=/etc/ssl/certs/etcd/peer.crt"
            Environment="ETCD_PEER_KEY_FILE=/etc/ssl/certs/etcd/peer.key"
            Environment="ETCD_PEER_CLIENT_CERT_AUTH=true"
    - name: docker.service
      enable: true
    - name: locksmithd.service
      mask: true
    - name: kubelet.path
      enable: true
      contents: |
        [Unit]
        Description=Watch for kubeconfig
        [Path]
        PathExists=/etc/kubernetes/kubeconfig
        [Install]
        WantedBy=multi-user.target
    - name: wait-for-dns.service
      enable: true
      contents: |
        [Unit]
        Description=Wait for DNS entries
        Wants=systemd-resolved.service
        Before=kubelet.service
        [Service]
        Type=oneshot
        RemainAfterExit=true
        ExecStart=/bin/sh -c 'while ! /usr/bin/grep '^[^#[:space:]]' /etc/resolv.conf > /dev/null; do sleep 1; done'
        [Install]
        RequiredBy=kubelet.service
        RequiredBy=etcd-member.service
    - name: kubelet.service
      contents: |
        [Unit]
        Description=Kubelet via Hyperkube
        Requires=coreos-metadata.service
        After=coreos-metadata.service
        Wants=rpc-statd.service
        [Service]
        EnvironmentFile=/etc/kubernetes/kubelet.env
        EnvironmentFile=/run/metadata/coreos
        Environment="RKT_RUN_ARGS=--uuid-file-save=/var/cache/kubelet-pod.uuid \
          --volume=resolv,kind=host,source=/etc/resolv.conf \
          --mount volume=resolv,target=/etc/resolv.conf \
          --volume var-lib-cni,kind=host,source=/var/lib/cni \
          --mount volume=var-lib-cni,target=/var/lib/cni \
          --volume var-lib-calico,kind=host,source=/var/lib/calico \
          --mount volume=var-lib-calico,target=/var/lib/calico \
          --volume opt-cni-bin,kind=host,source=/opt/cni/bin \
          --mount volume=opt-cni-bin,target=/opt/cni/bin \
          --volume var-log,kind=host,source=/var/log \
          --mount volume=var-log,target=/var/log \
          --insecure-options=image"
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
        ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
        ExecStartPre=/bin/mkdir -p /opt/cni/bin
        ExecStartPre=/bin/mkdir -p /var/lib/cni
        ExecStartPre=/bin/mkdir -p /var/lib/calico
        ExecStartPre=/bin/mkdir -p /var/lib/kubelet/volumeplugins
        ExecStartPre=/usr/bin/bash -c "grep 'certificate-authority-data' /etc/kubernetes/kubeconfig | awk '{print $2}' | base64 -d > /etc/kubernetes/ca.crt"
        ExecStartPre=-/usr/bin/rkt rm --uuid-file=/var/cache/kubelet-pod.uuid
        ExecStart=/usr/lib/coreos/kubelet-wrapper \
          --anonymous-auth=false \
          --authentication-token-webhook \
          --authorization-mode=Webhook \
          --client-ca-file=/etc/kubernetes/ca.crt \
          --cluster_dns=${cluster_dns_service_ip} \
          --cluster_domain=${cluster_domain_suffix} \
          --cni-conf-dir=/etc/kubernetes/cni/net.d \
          --exit-on-lock-contention \
          --hostname-override=$${COREOS_DIGITALOCEAN_IPV4_PRIVATE_0} \
          --kubeconfig=/etc/kubernetes/kubeconfig \
          --lock-file=/var/run/lock/kubelet.lock \
          --network-plugin=cni \
          --node-labels=node.kubernetes.io/master \
          --node-labels=node.kubernetes.io/controller="true" \
          --pod-manifest-path=/etc/kubernetes/manifests \
          --read-only-port=0 \
          --register-with-taints=node-role.kubernetes.io/master=:NoSchedule \
          --volume-plugin-dir=/var/lib/kubelet/volumeplugins
        ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
        Restart=always
        RestartSec=10
        [Install]
        WantedBy=multi-user.target
    - name: bootstrap.service
      contents: |
        [Unit]
        Description=Kubernetes control plane
        ConditionPathExists=!/opt/bootstrap/bootstrap.done
        [Service]
        Type=oneshot
        RemainAfterExit=true
        WorkingDirectory=/opt/bootstrap
        ExecStartPre=-/usr/bin/bash -c 'set -x && [ -n "$(ls /opt/bootstrap/assets/manifests-*/* 2>/dev/null)" ] && mv /opt/bootstrap/assets/manifests-*/* /opt/bootstrap/assets/manifests && rm -rf /opt/bootstrap/assets/manifests-*'
        ExecStart=/usr/bin/rkt run \
            --trust-keys-from-https \
            --volume config,kind=host,source=/etc/kubernetes/bootstrap-secrets \
            --mount volume=config,target=/etc/kubernetes/secrets \
            --volume assets,kind=host,source=/opt/bootstrap/assets \
            --mount volume=assets,target=/assets \
            --volume script,kind=host,source=/opt/bootstrap/apply \
            --mount volume=script,target=/apply \
            --insecure-options=image \
            docker://k8s.gcr.io/hyperkube:v1.17.0 \
            --net=host \
            --dns=host \
            --exec=/apply
        ExecStartPost=/bin/touch /opt/bootstrap/bootstrap.done
        [Install]
        WantedBy=multi-user.target
storage:
  files:
    - path: /etc/kubernetes/kubelet.env
      filesystem: root
      mode: 0644
      contents:
        inline: |
          KUBELET_IMAGE_URL=docker://k8s.gcr.io/hyperkube
          KUBELET_IMAGE_TAG=v1.17.0
          KUBELET_IMAGE_ARGS="--exec=/usr/local/bin/kubelet"
    - path: /opt/bootstrap/layout
      filesystem: root
      mode: 0544
      contents:
        inline: |
          #!/bin/bash -e
          mkdir -p -- auth tls/etcd tls/k8s static-manifests manifests/coredns manifests-networking
          awk '/#####/ {filename=$2; next} {print > filename}' assets
          mkdir -p /etc/ssl/etcd/etcd
          mkdir -p /etc/kubernetes/bootstrap-secrets
          mv tls/etcd/{peer*,server*} /etc/ssl/etcd/etcd/
          mv tls/etcd/etcd-client* /etc/kubernetes/bootstrap-secrets/
          chown -R etcd:etcd /etc/ssl/etcd
          chmod -R 500 /etc/ssl/etcd
          mv auth/kubeconfig /etc/kubernetes/bootstrap-secrets/
          mv tls/k8s/* /etc/kubernetes/bootstrap-secrets/
          sudo mkdir -p /etc/kubernetes/manifests
          sudo mv static-manifests/* /etc/kubernetes/manifests/
          sudo mkdir -p /opt/bootstrap/assets
          sudo mv manifests /opt/bootstrap/assets/manifests
          sudo mv manifests-networking /opt/bootstrap/assets/manifests-networking
          rm -rf assets auth static-manifests tls
    - path: /opt/bootstrap/apply
      filesystem: root
      mode: 0544
      contents:
        inline: |
          #!/bin/bash -e
          export KUBECONFIG=/etc/kubernetes/secrets/kubeconfig
          until kubectl version; do
            echo "Waiting for static pod control plane"
            sleep 5
          done
          until kubectl apply -f /assets/manifests -R; do
             echo "Retry applying manifests"
             sleep 5
          done
    - path: /etc/sysctl.d/max-user-watches.conf
      filesystem: root
      contents:
        inline: |
          fs.inotify.max_user_watches=16184