K8S scratch demo1.

2024/07/k8s_scratch_demo1/image/box.json

@@ -0,0 +1,18 @@
+{
+  "provisioners": [
+    {
+      "type": "shell",
+      "execute_command": "echo 'vagrant' | {{.Vars}} sudo -S -E bash '{{.Path}}'",
+      "script": "scripts/setup.sh"
+    }
+  ],
+  "builders": [
+    {
+      "communicator": "ssh",
+      "source_path": "debian/bullseye64",
+      "provider": "virtualbox",
+      "add_force": true,
+      "type": "vagrant"
+    }
+  ]
+}

2024/07/k8s_scratch_demo1/image/scripts/setup.sh

@@ -0,0 +1,63 @@
+#!/bin/sh
+
+apt-get update
+apt-get install -y vim
+
+cat << EOF | tee /etc/modules-load.d/k8s.conf
+
+overlay
+br_netfilter
+
+EOF
+
+modprobe overlay
+modprobe br_netfilter
+
+cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
+
+net.bridge.bridge-nf-call-iptables  = 1
+net.bridge.bridge-nf-call-ip6tables = 1
+net.ipv4.ip_forward                 = 1
+
+EOF
+
+sysctl --system
+
+cd /tmp
+
+test -f containerd-1.7.11-linux-amd64.tar.gz || wget https://github.com/containerd/containerd/releases/download/v1.7.11/containerd-1.7.11-linux-amd64.tar.gz
+tar Cxzvf /usr/local containerd-1.7.11-linux-amd64.tar.gz
+
+mkdir -p /etc/containerd
+containerd config default > config.toml
+cp config.toml /etc/containerd
+
+test -f containerd.service || wget https://raw.githubusercontent.com/containerd/containerd/main/containerd.service
+cp containerd.service /etc/systemd/system/
+systemctl daemon-reload
+systemctl enable --now containerd
+
+test -f runc.amd64 || wget https://github.com/opencontainers/runc/releases/download/v1.1.10/runc.amd64
+install -m 755 runc.amd64 /usr/local/sbin/runc
+
+test -f cni-plugins-linux-amd64-v1.4.0.tgz || wget https://github.com/containernetworking/plugins/releases/download/v1.4.0/cni-plugins-linux-amd64-v1.4.0.tgz
+mkdir -p /opt/cni/bin
+tar Cxzvf /opt/cni/bin cni-plugins-linux-amd64-v1.4.0.tgz
+
+sed -i.bak "s/SystemdCgroup.*$/SystemdCgroup = true/g" /etc/containerd/config.toml
+
+systemctl restart containerd
+
+apt-get update
+apt-get install -y apt-transport-https ca-certificates curl gpg
+
+mkdir -p /etc/apt/keyrings
+test -f /etc/apt/keyrings/kubernetes-apt-keyring.gpg || ( curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.28/deb/Release.key | gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg )
+
+echo 'deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v1.28/deb/ /' | sudo tee /etc/apt/sources.list.d/kubernetes.list
+apt-get update
+apt-get install -y kubelet=1.28.4-1.1 kubeadm=1.28.4-1.1 kubectl=1.28.4-1.1
+
+swapoff -a
+
+sed -i.bak -E "s/^.*swap.*//g" /etc/fstab