From fc2c9a2a5f8c69a46f71a82e7aa915b23dc038cc Mon Sep 17 00:00:00 2001
From: Philippe Caseiro <pcaseiro@cadoles.com>
Date: Wed, 23 Nov 2022 16:41:31 +0100
Subject: [PATCH] feat(os): adding flatcar butane config for k8s

---
 butane/k8s.yaml | 115 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 butane/k8s.yaml

diff --git a/butane/k8s.yaml b/butane/k8s.yaml
new file mode 100644
index 0000000..ee69f74
--- /dev/null
+++ b/butane/k8s.yaml
@@ -0,0 +1,115 @@
+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 AAAAB3NzaC1yc2EAAAADAQABAAACAQDDph3zh6ojSvH44k13z9B6xj+Hargo3uzkxnYv5s5NI4yagNuBXEc3aS++KdocND+FtVfLK+iVE8qHo2bvmpMmVkqU6WU2apN7DfIP0QGLlSGeo+UOZ9hGeEDlgVO4AOnZKZ5kPGBEPZ84JXuE9CmhKfwEVCK8w3B8XQttA8alFl4A4/4F14x2w4njsSLY1H3b0qah7hgYKU5zHIGLg8Lxx+1BxGIF0l5n5m5rqAskRNaF+aYbs0CcWHv49bPK0sJJ0qPV2r2sq8BlzuZFHExnZRIxpsIXdce4Bm4rdlGi7tBmmurLk4OOtDkwvhD0LMaNJf10k6QLSmRUTVzgsYz/dmGxopbMtwwIXkwi014uSZgi8wAuznXx5I4j2TUGPZHOVf+1iw/yaxWlgTVOSoX7ZxyhDgW5cCgZZGNzU5UWe0vUuVTB+hfSMj50/Q6+Vi92/mDMbPhm4nBoVzD5DT15mB+yGyN45Ej61m0JzVUyZexfvVaffEug1/u5dnwilP0WGKr4i2OXxOXtvSdAs5rlZjvppZk6IxRCwXIcPwEFL97ZrQZAxlVS5Nh+ZnlSwTe3zfQhzHj1ao0AdCAHFPUEdoUPJhSb0OjyCvZ9XZ1KCkXhuhuN/3IUhuoWl4soNCeC3KmU/USx1wda438Exj0hM1mTyBZScDPGyD9nw78DGw== 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 $DOWNLOAD_DIR -xz"
+        [Install]
+        WantedBy=multi-user.target
+    - name: install-kubernetes.service
+      enabled: true
+      contents: |
+        [Unit]
+        Description=Install K8S
+        Wants = network-online.target
+        After = network.target network-online.target
+        ConditionPathExists=!/opt/bin/kubelet
+        [Service]
+        WorkingDirectory=/opt/bin
+        Type=forking
+        TimeoutStartSec=180
+        RemainAfterExit=yes
+        KillMode=process
+        Environment="RELEASE_VERSION=0.6.0"
+        Environment="RELEASE=v1.25.4"
+        Environment="ARCH=amd64"
+        Environment="DOWNLOAD_DIR=/opt/bin"
+        Environment="URL=https://storage.googleapis.com/kubernetes-release/release/${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/chmod +x ${DOWNLOAD_DIR}/{kubeadm,kubelet,kubectl}
+        [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=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_ARGS $KUBELET_EXTRA_ARGS
+storage:
+  files:
+    - path: /etc/hostname
+      mode: 0644
+      contents:
+        inline: node1
+    - path: /etc/sysctl.d/k8s.conf
+      mode: 0600
+      contents:
+        inline: |
+          net.bridge.bridge-nf-call-ip6tables = 1
+          net.bridge.bridge-nf-call-iptables = 1