os/butane/k8s-leader.yaml

variant: flatcar
version: 1.0.0
passwd:
  users:
    - name: cadoles
      password_hash: "$y$j9T$7dNoyJBSiQ5dJ6.kLs17I0$G9VVQkBUddW2E6TVQchecSE94jNxLz4F3wguz5QkvD8"
      groups:
        - wheel
        - sudo
      ssh_authorized_keys: 
        - "ssh-rsa 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 Philippe Caseiro"
systemd:
  units:
    - name: install-cni.service
      enabled: true
      contents: |
        [Unit]
        Description=Install CNI plugins K8S
        Wants = network-online.target
        After = network.target network-online.target
        ConditionPathExists=!/opt/cni/bin/firewall
        [Service]
        Type=forking
        TimeoutStartSec=180
        RemainAfterExit=yes
        KillMode=process
        Environment="CNI_VERSION=v0.8.2"
        Environment="ARCH=amd64"
        Environment="URL=https://github.com/containernetworking/plugins/releases/download/${CNI_VERSION}/cni-plugins-linux-${ARCH}-${CNI_VERSION}.tgz"
        ExecStartPre=/bin/mkdir -p /opt/cni/bin
        ExecStart=/bin/sh -c "/usr/bin/curl -L ${URL} | /usr/bin/tar -C /opt/cni/bin -xz"
        [Install]
        WantedBy=multi-user.target
    - name: install-crictl.service
      enabled: true
      contents: |
        [Unit]
        Description=Install crictl
        Wants = network-online.target
        After = network.target network-online.target
        ConditionPathExists=!/opt/bin/crictl
        [Service]
        Type=forking
        TimeoutStartSec=180
        RemainAfterExit=yes
        KillMode=process
        Environment="DOWNLOAD_DIR=/opt/bin"
        Environment="CRICTL_VERSION=v1.22.0"
        Environment="ARCH=amd64"
        Environment="URL=https://github.com/kubernetes-sigs/cri-tools/releases/download/${CRICTL_VERSION}/crictl-${CRICTL_VERSION}-linux-${ARCH}.tar.gz"
        ExecStartPre=/bin/mkdir -p ${DOWNLOAD_DIR}
        ExecStart=/bin/sh -c "/usr/bin/curl -L ${URL} | /usr/bin/tar -C $DOWNLOAD_DIR -xz"
        [Install]
        WantedBy=multi-user.target
    - name: install-kubernetes.service
      enabled: true
      contents: |
        [Unit]
        Description=Install K8S
        Wants = network-online.target
        After = network.target network-online.target
        ConditionPathExists=!/opt/bin/kubelet
        [Service]
        WorkingDirectory=/opt/bin
        Type=forking
        TimeoutStartSec=180
        RemainAfterExit=yes
        KillMode=process
        Environment="KUBE_RELEASE=v1.25.4"
        Environment="ARCH=amd64"
        Environment="DOWNLOAD_DIR=/opt/bin"
        Environment="URL=https://storage.googleapis.com/kubernetes-release/release/${KUBE_RELEASE}/bin/linux/${ARCH}"
        ExecStartPre=/bin/mkdir -p ${DOWNLOAD_DIR}
        ExecStart=/bin/sh -c "/usr/bin/curl -L --remote-name-all ${URL}/{kubeadm,kubelet,kubectl}"
        ExecStartPost=/bin/sh -c "/bin/chmod +x ${DOWNLOAD_DIR}/{kubeadm,kubelet,kubectl}"
        [Install]
        WantedBy=multi-user.target
    - name: install-cilium.service
      enabled: false
      contents: |
        [Unit]
        Description=Install Cilium client
        Wants = network-online.target
        After = network.target network-online.target
        ConditionPathExists=!/opt/bin/cilium
        [Service]
        WorkingDirectory=/opt/bin
        Type=forking
        TimeoutStartSec=180
        RemainAfterExit=yes
        KillMode=process
        Environment="CILIUM_RELEASE=v0.12.8"
        Environment="ARCH=amd64"
        Environment="DOWNLOAD_DIR=/opt/bin"
        Environment="URL=https://github.com/cilium/cilium-cli/releases/download/${CILIUM_RELEASE}/cilium-linux-${ARCH}.tar.gz
        ExecStartPre=/bin/mkdir -p ${DOWNLOAD_DIR}
        ExecStart=/bin/sh -c "/usr/bin/curl -L ${URL} | /usr/bin/tar -C ${DOWNLOAD_DIR} -xz"
        [Install]
        WantedBy=multi-user.target
    - name: kubelet.service
      enabled: true
      contents: |
        [Unit]
        Description=The Kubernetes Node Agent
        Documentation=https://kubernetes.io/docs/home/
        Wants=network-online.target
        After=network-online.target
        [Service]
        ExecStart=/opt/bin/kubelet
        Restart=always
        StartLimitInterval=0
        RestartSec=10
        [Install]
        WantedBy=multi-user.target
      dropins:
        - name: 10-kubeadm.conf
          contents: |          
            [Service]
            Environment="KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf"
            Environment="KUBELET_CONFIG_ARGS=--config=/var/lib/kubelet/config.yaml"
            EnvironmentFile=-/var/lib/kubelet/kubeadm-flags.env
            EnvironmentFile=-/etc/default/kubelet
            ExecStart=
            ExecStart=/opt/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_ARGS $KUBELET_EXTRA_ARGS
    - name: init-cluster.service
      enabled: true
      contents: |
        [Unit]
        Description=Kubernetes cluster init
        Documentation=https://kubernetes.io/docs/home/
        Wants=network-online.target
        After=network-online.target install-kubernetes.service
        ConditionPathExists=!/opt/libexec/kubernetes/kubelet-plugins/volume/exec/
        [Service]
        WorkingDirectory=/opt/bin
        Type=forking
        TimeoutStartSec=360
        RemainAfterExit=yes
        KillMode=process
        Environment="caSecretKey=$(date | sha256sum | awk \'{print $1}`')"
        Environment="SET_HOSTNAME=leader.ks.cadoles.com"
        Environment="PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/opt/bin"
        Environment="KUBECONFIG=/etc/kubernetes/admin.conf"
        ExecStartPre=/bin/sh -c "/usr/bin/hostnamectl hostname ${SET_HOSTNAME}"
        ExecStart=/opt/bin/kubeadm init --config /root/kubeadm-config.yaml --upload-certs
        ExecStartPost=/bin/sh -c "/bin/mkdir -p /home/cadoles/.kube"
        ExecStartPost=/bin/sh -c "/bin/cp -i /etc/kubernetes/admin.conf /home/cadoles/.kube/config"
        ExecStartPost=/bin/sh -c "/bin/chown cadoles:cadoles /home/cadoles/.kube/config"
        [Install]
        WantedBy=multi-user.target
    - name: install-network-cni.service
      enabled: true
      contents: |
        [Unit]
        Description=Install network CNI (calico)
        Documentation=https://kubernetes.io/docs/home/
        Wants=network-online.target
        After=network-online.target init-cluster.service
        ConditionPathExists=!/opt/cni/bin/calico
        [Service]
        WorkingDirectory=/opt/bin
        Type=forking
        TimeoutStartSec=360
        RemainAfterExit=yes
        KillMode=process
        Environment="KUBECONFIG=/etc/kubernetes/admin.conf"
        Environment="CIDR=10.244.0.0/16"
        Environment="URL=https://raw.githubusercontent.com/projectcalico/calico/v3.24.5/manifests/calico.yaml"
        ExecStart=/opt/bin/kubectl apply -f ${URL}
        [Install]
        WantedBy=multi-user.target

storage:
  files:
    - path: /etc/sysctl.d/k8s.conf
      mode: 0600
      contents:
        inline: |
          net.bridge.bridge-nf-call-ip6tables = 1
          net.bridge.bridge-nf-call-iptables = 1
    - path: /root/kubeadm-config.yaml
      mode: 0644
      contents:
        inline: |
          apiVersion: kubeadm.k8s.io/v1beta3
          kind: InitConfiguration
          certificateKey: b4edd5fb7aec1b90e06c68e090213621f621e31353a165dabeed0f8617c341b6
          nodeRegistration:
            name: leader.ks.cadoles.com
            kubeletExtraArgs:
              volume-plugin-dir: "/opt/libexec/kubernetes/kubelet-plugins/volume/exec/"
          ---
          apiVersion: kubeadm.k8s.io/v1beta3
          kind: ClusterConfiguration
          networking:
            podSubnet: 10.244.0.0/16
          controllerManager:
            extraArgs:
              flex-volume-plugin-dir: "/opt/libexec/kubernetes/kubelet-plugins/volume/exec/"
          ---
          apiVersion: kubeproxy.config.k8s.io/v1alpha1
          kind: KubeProxyConfiguration
          mode: "ipvs"
          ipvs:
            strictARP: true
          ---
          kind: KubeletConfiguration
          apiVersion: kubelet.config.k8s.io/v1beta1
          cgroupDriver: systemd