118 lines
4.3 KiB
YAML
118 lines
4.3 KiB
YAML
---
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systemd:
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units:
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- name: docker.service
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enabled: true
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- name: locksmithd.service
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mask: true
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- name: kubelet.path
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enabled: true
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contents: |
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[Unit]
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Description=Watch for kubeconfig
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[Path]
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PathExists=/etc/kubernetes/kubeconfig
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[Install]
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WantedBy=multi-user.target
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- name: wait-for-dns.service
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enabled: true
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contents: |
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[Unit]
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Description=Wait for DNS entries
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Wants=systemd-resolved.service
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Before=kubelet.service
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[Service]
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Type=oneshot
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RemainAfterExit=true
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ExecStart=/bin/sh -c 'while ! /usr/bin/grep '^[^#[:space:]]' /etc/resolv.conf > /dev/null; do sleep 1; done'
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[Install]
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RequiredBy=kubelet.service
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- name: kubelet.service
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contents: |
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[Unit]
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Description=Kubelet
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Requires=docker.service
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After=docker.service
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Requires=coreos-metadata.service
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After=coreos-metadata.service
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Wants=rpc-statd.service
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[Service]
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Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.19.3
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EnvironmentFile=/run/metadata/coreos
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ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
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ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
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ExecStartPre=/bin/mkdir -p /opt/cni/bin
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ExecStartPre=/bin/mkdir -p /var/lib/calico
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ExecStartPre=/bin/mkdir -p /var/lib/kubelet/volumeplugins
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ExecStartPre=/usr/bin/bash -c "grep 'certificate-authority-data' /etc/kubernetes/kubeconfig | awk '{print $2}' | base64 -d > /etc/kubernetes/ca.crt"
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# Podman, rkt, or runc run container processes, whereas docker run
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# is a client to a daemon and requires workarounds to use within a
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# systemd unit. https://github.com/moby/moby/issues/6791
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ExecStartPre=/usr/bin/docker run -d \
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--name kubelet \
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--privileged \
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--pid host \
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--network host \
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-v /etc/kubernetes:/etc/kubernetes:ro \
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-v /etc/machine-id:/etc/machine-id:ro \
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-v /usr/lib/os-release:/etc/os-release:ro \
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-v /lib/modules:/lib/modules:ro \
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-v /run:/run \
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-v /sys/fs/cgroup:/sys/fs/cgroup:ro \
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-v /sys/fs/cgroup/systemd:/sys/fs/cgroup/systemd \
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-v /var/lib/calico:/var/lib/calico:ro \
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-v /var/lib/docker:/var/lib/docker \
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-v /var/lib/kubelet:/var/lib/kubelet:rshared \
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-v /var/log:/var/log \
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-v /opt/cni/bin:/opt/cni/bin \
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$${KUBELET_IMAGE} \
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--anonymous-auth=false \
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--authentication-token-webhook \
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--authorization-mode=Webhook \
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--bootstrap-kubeconfig=/etc/kubernetes/kubeconfig \
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--client-ca-file=/etc/kubernetes/ca.crt \
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--cluster_dns=${cluster_dns_service_ip} \
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--cluster_domain=${cluster_domain_suffix} \
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--cni-conf-dir=/etc/kubernetes/cni/net.d \
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--healthz-port=0 \
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--hostname-override=$${COREOS_DIGITALOCEAN_IPV4_PRIVATE_0} \
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--kubeconfig=/var/lib/kubelet/kubeconfig \
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--network-plugin=cni \
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--node-labels=node.kubernetes.io/node \
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--pod-manifest-path=/etc/kubernetes/manifests \
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--read-only-port=0 \
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--rotate-certificates \
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--volume-plugin-dir=/var/lib/kubelet/volumeplugins
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ExecStart=docker logs -f kubelet
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ExecStop=docker stop kubelet
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ExecStopPost=docker rm kubelet
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Restart=always
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RestartSec=5
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[Install]
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WantedBy=multi-user.target
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- name: delete-node.service
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enabled: true
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contents: |
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[Unit]
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Description=Delete Kubernetes node on shutdown
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[Service]
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Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.19.3
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Type=oneshot
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RemainAfterExit=true
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ExecStart=/bin/true
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ExecStop=/bin/bash -c '/usr/bin/docker run -v /var/lib/kubelet:/var/lib/kubelet:ro --entrypoint /usr/local/bin/kubectl $${KUBELET_IMAGE} --kubeconfig=/var/lib/kubelet/kubeconfig delete node $HOSTNAME'
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[Install]
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WantedBy=multi-user.target
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storage:
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directories:
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- path: /etc/kubernetes
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filesystem: root
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mode: 0755
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files:
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- path: /etc/sysctl.d/max-user-watches.conf
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filesystem: root
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mode: 0644
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contents:
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inline: |
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fs.inotify.max_user_watches=16184
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