typhoon/digital-ocean/container-linux/kubernetes/cl/worker.yaml.tmpl

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---
systemd:
units:
- name: docker.service
enable: true
- name: locksmithd.service
mask: true
- 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
- name: kubelet.service
enable: true
contents: |
[Unit]
Description=Kubelet via Hyperkube ACI
Requires=coreos-metadata.service
After=coreos-metadata.service
[Service]
EnvironmentFile=/etc/kubernetes/kubelet.env
EnvironmentFile=/run/metadata/coreos
Environment="RKT_RUN_ARGS=--uuid-file-save=/var/run/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-log,kind=host,source=/var/log \
--mount volume=var-log,target=/var/log"
ExecStartPre=/bin/mkdir -p /etc/kubernetes/manifests
ExecStartPre=/bin/mkdir -p /etc/kubernetes/cni/net.d
ExecStartPre=/bin/mkdir -p /etc/kubernetes/checkpoint-secrets
ExecStartPre=/bin/mkdir -p /etc/kubernetes/inactive-manifests
ExecStartPre=/bin/mkdir -p /var/lib/cni
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/run/kubelet-pod.uuid
ExecStart=/usr/lib/coreos/kubelet-wrapper \
--kubeconfig=/etc/kubernetes/kubeconfig \
--require-kubeconfig \
--client-ca-file=/etc/kubernetes/ca.crt \
--anonymous-auth=false \
--cni-conf-dir=/etc/kubernetes/cni/net.d \
--network-plugin=cni \
--lock-file=/var/run/lock/kubelet.lock \
--exit-on-lock-contention \
--hostname-override=$${COREOS_DIGITALOCEAN_IPV4_PRIVATE_0} \
--pod-manifest-path=/etc/kubernetes/manifests \
--allow-privileged \
--node-labels=node-role.kubernetes.io/node \
--cluster_dns=${k8s_dns_service_ip} \
--cluster_domain=cluster.local
ExecStop=-/usr/bin/rkt stop --uuid-file=/var/run/kubelet-pod.uuid
Restart=always
RestartSec=5
[Install]
WantedBy=multi-user.target
- name: delete-node.service
enable: true
contents: |
[Unit]
Description=Waiting to delete Kubernetes node on shutdown
[Service]
Type=oneshot
RemainAfterExit=true
ExecStart=/bin/true
ExecStop=/etc/kubernetes/delete-node
[Install]
WantedBy=multi-user.target
storage:
files:
- path: /etc/kubernetes/kubeconfig
filesystem: root
mode: 0644
contents:
inline: |
apiVersion: v1
kind: Config
clusters:
- name: local
cluster:
server: ${kubeconfig_server}
certificate-authority-data: ${kubeconfig_ca_cert}
users:
- name: kubelet
user:
client-certificate-data: ${kubeconfig_kubelet_cert}
client-key-data: ${kubeconfig_kubelet_key}
contexts:
- context:
cluster: local
user: kubelet
- path: /etc/kubernetes/kubelet.env
filesystem: root
mode: 0644
contents:
inline: |
KUBELET_IMAGE_URL=quay.io/coreos/hyperkube
KUBELET_IMAGE_TAG=v1.7.1_coreos.0
- path: /etc/sysctl.d/max-user-watches.conf
filesystem: root
contents:
inline: |
fs.inotify.max_user_watches=16184
- path: /etc/kubernetes/delete-node
filesystem: root
mode: 0744
contents:
inline: |
#!/bin/bash
set -e
exec /usr/bin/rkt run \
--trust-keys-from-https \
--volume config,kind=host,source=/etc/kubernetes \
--mount volume=config,target=/etc/kubernetes \
quay.io/coreos/hyperkube:v1.7.1_coreos.0 \
--net=host \
--dns=host \
--exec=/kubectl -- --kubeconfig=/etc/kubernetes/kubeconfig delete node $(hostname)