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templates: add flatcar template
Signed-off-by: Mathieu Tortuyaux <mtortuyaux@microsoft.com>
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‎templates/cluster-template-flatcar.yaml

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---
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apiVersion: cluster.x-k8s.io/v1beta1
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kind: Cluster
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metadata:
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name: "${CLUSTER_NAME}"
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spec:
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clusterNetwork:
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pods:
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cidrBlocks: ["192.168.0.0/16"]
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infrastructureRef:
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apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
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kind: GCPCluster
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name: "${CLUSTER_NAME}"
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controlPlaneRef:
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kind: KubeadmControlPlane
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apiVersion: controlplane.cluster.x-k8s.io/v1beta1
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name: "${CLUSTER_NAME}-control-plane"
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---
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apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
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kind: GCPCluster
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metadata:
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name: "${CLUSTER_NAME}"
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spec:
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project: "${GCP_PROJECT}"
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region: "${GCP_REGION}"
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network:
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name: "${GCP_NETWORK_NAME}"
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---
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kind: KubeadmControlPlane
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apiVersion: controlplane.cluster.x-k8s.io/v1beta1
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metadata:
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name: "${CLUSTER_NAME}-control-plane"
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spec:
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replicas: ${CONTROL_PLANE_MACHINE_COUNT}
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machineTemplate:
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infrastructureRef:
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kind: GCPMachineTemplate
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apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
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name: "${CLUSTER_NAME}-control-plane"
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kubeadmConfigSpec:
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files: []
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format: ignition
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ignition:
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containerLinuxConfig:
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additionalConfig: |
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storage:
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links:
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- path: /etc/extensions/kubernetes.raw
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hard: false
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target: /opt/extensions/kubernetes/kubernetes-${KUBERNETES_VERSION}-x86-64.raw
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files:
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- path: /etc/sysupdate.kubernetes.d/kubernetes-${KUBERNETES_VERSION%.*}.conf
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mode: 0644
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contents:
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remote:
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url: https://github.com/flatcar/sysext-bakery/releases/download/latest/kubernetes-${KUBERNETES_VERSION%.*}.conf
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- path: /etc/sysupdate.d/noop.conf
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mode: 0644
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contents:
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remote:
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url: https://github.com/flatcar/sysext-bakery/releases/download/latest/noop.conf
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- path: /opt/extensions/kubernetes/kubernetes-${KUBERNETES_VERSION}-x86-64.raw
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contents:
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remote:
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url: https://github.com/flatcar/sysext-bakery/releases/download/latest/kubernetes-${KUBERNETES_VERSION}-x86-64.raw
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systemd:
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units:
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- name: systemd-sysupdate.service
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dropins:
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- name: kubernetes.conf
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contents: |
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[Service]
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ExecStartPre=/usr/bin/sh -c "readlink --canonicalize /etc/extensions/kubernetes.raw > /tmp/kubernetes"
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ExecStartPre=/usr/lib/systemd/systemd-sysupdate -C kubernetes update
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ExecStartPost=/usr/bin/sh -c "readlink --canonicalize /etc/extensions/kubernetes.raw > /tmp/kubernetes-new"
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ExecStartPost=/usr/bin/sh -c "if ! cmp --silent /tmp/kubernetes /tmp/kubernetes-new; then touch /run/reboot-required; fi"
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- name: update-engine.service
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# Set this to 'false' if you want to enable Flatcar auto-update
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mask: ${FLATCAR_DISABLE_AUTO_UPDATE:=true}
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- name: locksmithd.service
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# NOTE: To coordinate the node reboot in this context, we recommend to use Kured.
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mask: true
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- name: systemd-sysupdate.timer
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# Set this to 'true' if you want to enable the Kubernetes auto-update.
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# NOTE: Only patches version will be pulled.
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enabled: ${FLATCAR_DISABLE_AUTO_UPDATE:=true}
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- name: coreos-metadata-sshkeys@.service
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enabled: true
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- name: kubeadm.service
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enabled: true
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dropins:
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- name: 10-flatcar.conf
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contents: |
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[Unit]
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Requires=containerd.service coreos-metadata.service
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After=containerd.service coreos-metadata.service
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[Service]
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EnvironmentFile=/run/metadata/flatcar
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initConfiguration:
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nodeRegistration:
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name: $${COREOS_GCE_HOSTNAME}
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kubeletExtraArgs:
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cloud-provider: gce
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feature-gates: "DisableCloudProviders=false,DisableKubeletCloudCredentialProviders=false"
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clusterConfiguration:
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apiServer:
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timeoutForControlPlane: 20m
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extraArgs:
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cloud-provider: gce
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feature-gates: "DisableCloudProviders=false,DisableKubeletCloudCredentialProviders=false"
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controllerManager:
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extraArgs:
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cloud-provider: gce
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feature-gates: "DisableCloudProviders=false,DisableKubeletCloudCredentialProviders=false"
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allocate-node-cidrs: "false"
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joinConfiguration:
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nodeRegistration:
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name: $${COREOS_GCE_HOSTNAME}
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kubeletExtraArgs:
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cloud-provider: gce
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feature-gates: "DisableCloudProviders=false,DisableKubeletCloudCredentialProviders=false"
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preKubeadmCommands:
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- export COREOS_GCE_HOSTNAME=$${COREOS_GCE_HOSTNAME%%.*}
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- envsubst < /etc/kubeadm.yml > /etc/kubeadm.yml.tmp
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- mv /etc/kubeadm.yml.tmp /etc/kubeadm.yml
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version: "${KUBERNETES_VERSION}"
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---
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kind: GCPMachineTemplate
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apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
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metadata:
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name: "${CLUSTER_NAME}-control-plane"
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spec:
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template:
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spec:
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instanceType: "${GCP_CONTROL_PLANE_MACHINE_TYPE}"
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image: "${IMAGE_ID}"
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---
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apiVersion: cluster.x-k8s.io/v1beta1
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kind: MachineDeployment
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metadata:
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name: "${CLUSTER_NAME}-md-0"
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spec:
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clusterName: "${CLUSTER_NAME}"
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replicas: ${WORKER_MACHINE_COUNT}
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selector:
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matchLabels:
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template:
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spec:
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clusterName: "${CLUSTER_NAME}"
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version: "${KUBERNETES_VERSION}"
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bootstrap:
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configRef:
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name: "${CLUSTER_NAME}-md-0"
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apiVersion: bootstrap.cluster.x-k8s.io/v1beta1
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kind: KubeadmConfigTemplate
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infrastructureRef:
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name: "${CLUSTER_NAME}-md-0"
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apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
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kind: GCPMachineTemplate
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---
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apiVersion: infrastructure.cluster.x-k8s.io/v1beta1
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kind: GCPMachineTemplate
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metadata:
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name: "${CLUSTER_NAME}-md-0"
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spec:
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template:
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spec:
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instanceType: "${GCP_NODE_MACHINE_TYPE}"
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image: "${IMAGE_ID}"
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---
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apiVersion: bootstrap.cluster.x-k8s.io/v1beta1
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kind: KubeadmConfigTemplate
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metadata:
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name: "${CLUSTER_NAME}-md-0"
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spec:
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template:
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spec:
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files: []
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format: ignition
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ignition:
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containerLinuxConfig:
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additionalConfig: |
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storage:
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links:
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- path: /etc/extensions/kubernetes.raw
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hard: false
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target: /opt/extensions/kubernetes/kubernetes-${KUBERNETES_VERSION}-x86-64.raw
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files:
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- path: /etc/sysupdate.kubernetes.d/kubernetes-${KUBERNETES_VERSION%.*}.conf
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mode: 0644
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contents:
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remote:
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url: https://github.com/flatcar/sysext-bakery/releases/download/latest/kubernetes-${KUBERNETES_VERSION%.*}.conf
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- path: /etc/sysupdate.d/noop.conf
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mode: 0644
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contents:
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remote:
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url: https://github.com/flatcar/sysext-bakery/releases/download/latest/noop.conf
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- path: /opt/extensions/kubernetes/kubernetes-${KUBERNETES_VERSION}-x86-64.raw
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contents:
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remote:
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url: https://github.com/flatcar/sysext-bakery/releases/download/latest/kubernetes-${KUBERNETES_VERSION}-x86-64.raw
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systemd:
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units:
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- name: systemd-sysupdate.service
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dropins:
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- name: kubernetes.conf
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contents: |
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[Service]
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ExecStartPre=/usr/bin/sh -c "readlink --canonicalize /etc/extensions/kubernetes.raw > /tmp/kubernetes"
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ExecStartPre=/usr/lib/systemd/systemd-sysupdate -C kubernetes update
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ExecStartPost=/usr/bin/sh -c "readlink --canonicalize /etc/extensions/kubernetes.raw > /tmp/kubernetes-new"
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ExecStartPost=/usr/bin/sh -c "if ! cmp --silent /tmp/kubernetes /tmp/kubernetes-new; then touch /run/reboot-required; fi"
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- name: update-engine.service
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# Set this to 'false' if you want to enable Flatcar auto-update
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mask: ${FLATCAR_DISABLE_AUTO_UPDATE:=true}
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- name: locksmithd.service
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# NOTE: To coordinate the node reboot in this context, we recommend to use Kured.
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mask: true
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- name: systemd-sysupdate.timer
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# Set this to 'true' if you want to enable the Kubernetes auto-update.
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# NOTE: Only patches version will be pulled.
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enabled: ${FLATCAR_DISABLE_AUTO_UPDATE:=true}
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- name: coreos-metadata-sshkeys@.service
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enabled: true
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- name: kubeadm.service
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enabled: true
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dropins:
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- name: 10-flatcar.conf
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contents: |
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[Unit]
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Requires=containerd.service coreos-metadata.service
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After=containerd.service coreos-metadata.service
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[Service]
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EnvironmentFile=/run/metadata/flatcar
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joinConfiguration:
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nodeRegistration:
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name: $${COREOS_GCE_HOSTNAME}
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kubeletExtraArgs:
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cloud-provider: gce
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feature-gates: "DisableCloudProviders=false,DisableKubeletCloudCredentialProviders=false"
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preKubeadmCommands:
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- export COREOS_GCE_HOSTNAME=$${COREOS_GCE_HOSTNAME%%.*}
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- envsubst < /etc/kubeadm.yml > /etc/kubeadm.yml.tmp
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- mv /etc/kubeadm.yml.tmp /etc/kubeadm.yml

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