48 lines
1.2 KiB
Markdown
48 lines
1.2 KiB
Markdown
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# Dynamic Kubelet Configuration
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`sudo apt install -y jq`
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```
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NODE_NAME="worker-1"; NODE_NAME="worker-1"; curl -sSL "https://localhost:6443/api/v1/nodes/${NODE_NAME}/proxy/configz" -k --cert admin.crt --key admin.key | jq '.kubeletconfig|.kind="KubeletConfiguration"|.apiVersion="kubelet.config.k8s.io/v1beta1"' > kubelet_configz_${NODE_NAME}
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```
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```
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kubectl -n kube-system create configmap nodes-config --from-file=kubelet=kubelet_configz_${NODE_NAME} --append-hash -o yaml
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```
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Edit node to use the dynamically created configuration
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```
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kubectl edit worker-2
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```
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Configure Kubelet Service
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Create the `kubelet.service` systemd unit file:
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```
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cat <<EOF | sudo tee /etc/systemd/system/kubelet.service
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[Unit]
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Description=Kubernetes Kubelet
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Documentation=https://github.com/kubernetes/kubernetes
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After=docker.service
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Requires=docker.service
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[Service]
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ExecStart=/usr/local/bin/kubelet \\
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--bootstrap-kubeconfig="/var/lib/kubelet/bootstrap-kubeconfig" \\
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--image-pull-progress-deadline=2m \\
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--kubeconfig=/var/lib/kubelet/kubeconfig \\
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--dynamic-config-dir=/var/lib/kubelet/dynamic-config \\
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--cert-dir= /var/lib/kubelet/ \\
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--network-plugin=cni \\
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--register-node=true \\
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--v=2
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Restart=on-failure
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RestartSec=5
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[Install]
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WantedBy=multi-user.target
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EOF
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```
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