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digital-ocean: Update kubelet.service unit to match upstream 

* Mount host /opt/cni/bin in Kubelet to use host's CNI plugins
* Switch /var/run/kubelet-pod.uuid to /var/cache/kubelet-pod.uuid
to persist between reboots and cleanup old Kubelet pods
* Organize Kubelet flags in alphabetical order
This commit is contained in:
Dalton Hubble 2017-09-13 20:49:23 -07:00
parent 2ff6d602d8
commit 2a2ed372c8
2 changed files with 30 additions and 24 deletions
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27
digital-ocean/container-linux/kubernetes/cl/controller.yaml.tmpl
View File

@ -36,37 +36,40 @@ systemd:
[Service]
EnvironmentFile=/etc/kubernetes/kubelet.env
EnvironmentFile=/run/metadata/coreos
Environment="RKT_RUN_ARGS=--uuid-file-save=/var/run/kubelet-pod.uuid \
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 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"
ExecStartPre=/bin/mkdir -p /opt/cni/bin
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 $2}' | base64 -d > /etc/kubernetes/ca.crt"
ExecStartPre=-/usr/bin/rkt rm --uuid-file=/var/run/kubelet-pod.uuid
ExecStartPre=-/usr/bin/rkt rm --uuid-file=/var/cache/kubelet-pod.uuid
ExecStart=/usr/lib/coreos/kubelet-wrapper \
--kubeconfig=/etc/kubernetes/kubeconfig \
--require-kubeconfig \
--client-ca-file=/etc/kubernetes/ca.crt \
--allow-privileged \
--anonymous-auth=false \
--client-ca-file=/etc/kubernetes/ca.crt \
--cluster_dns=${k8s_dns_service_ip} \
--cluster_domain=cluster.local \
--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 \
--kubeconfig=/etc/kubernetes/kubeconfig \
--lock-file=/var/run/lock/kubelet.lock \
--network-plugin=cni \
--node-labels=node-role.kubernetes.io/master \
--pod-manifest-path=/etc/kubernetes/manifests \
--register-with-taints=node-role.kubernetes.io/master=:NoSchedule \
--cluster_dns=${k8s_dns_service_ip} \
--cluster_domain=cluster.local
ExecStop=-/usr/bin/rkt stop --uuid-file=/var/run/kubelet-pod.uuid
--require-kubeconfig
ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
Restart=always
RestartSec=10
[Install]

27
digital-ocean/container-linux/kubernetes/cl/worker.yaml.tmpl
View File

@ -36,36 +36,39 @@ systemd:
[Service]
EnvironmentFile=/etc/kubernetes/kubelet.env
EnvironmentFile=/run/metadata/coreos
Environment="RKT_RUN_ARGS=--uuid-file-save=/var/run/kubelet-pod.uuid \
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 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"
ExecStartPre=/bin/mkdir -p /opt/cni/bin
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 $2}' | base64 -d > /etc/kubernetes/ca.crt"
ExecStartPre=-/usr/bin/rkt rm --uuid-file=/var/run/kubelet-pod.uuid
ExecStartPre=-/usr/bin/rkt rm --uuid-file=/var/cache/kubelet-pod.uuid
ExecStart=/usr/lib/coreos/kubelet-wrapper \
--kubeconfig=/etc/kubernetes/kubeconfig \
--require-kubeconfig \
--client-ca-file=/etc/kubernetes/ca.crt \
--allow-privileged \
--anonymous-auth=false \
--client-ca-file=/etc/kubernetes/ca.crt \
--cluster_dns=${k8s_dns_service_ip} \
--cluster_domain=cluster.local \
--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 \
--kubeconfig=/etc/kubernetes/kubeconfig \
--lock-file=/var/run/lock/kubelet.lock \
--network-plugin=cni \
--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
--pod-manifest-path=/etc/kubernetes/manifests \
--require-kubeconfig
ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
Restart=always
RestartSec=5
[Install]