typhoon/digital-ocean/flatcar-linux/kubernetes/cl/worker.yaml
Dalton Hubble 7c3f3ab6d0 Rename container-linux modules to flatcar-linux
* CoreOS Container Linux was deprecated in v1.18.3
* Continue transitioning docs and modules from supporting
both CoreOS and Flatcar "variants" of Container Linux to
now supporting Flatcar Linux and equivalents

Action Required: Update the Flatcar Linux modules `source`
to replace `s/container-linux/flatcar-linux`. See docs for
examples
2020-10-20 22:47:19 -07:00

118 lines
4.3 KiB
YAML

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