initial commit with basic vagrant stuff

vagrant/bootstrap.sh

@@ -0,0 +1,70 @@
+#!/bin/bash
+
+## !IMPORTANT ##
+#
+## This script is tested only in the generic/ubuntu2204 Vagrant box
+## If you use a different version of Ubuntu or a different Ubuntu Vagrant box test this again
+#
+
+echo "[TASK 1] Disable and turn off SWAP"
+sed -i '/swap/d' /etc/fstab
+swapoff -a
+
+echo "[TASK 2] Stop and Disable firewall"
+systemctl disable --now ufw >/dev/null 2>&1
+
+echo "[TASK 3] Enable and Load Kernel modules"
+cat >>/etc/modules-load.d/containerd.conf<<EOF
+overlay
+br_netfilter
+EOF
+modprobe overlay
+modprobe br_netfilter
+
+echo "[TASK 4] Add Kernel settings"
+cat >>/etc/sysctl.d/kubernetes.conf<<EOF
+net.bridge.bridge-nf-call-ip6tables = 1
+net.bridge.bridge-nf-call-iptables  = 1
+net.ipv4.ip_forward                 = 1
+EOF
+sysctl --system >/dev/null 2>&1
+
+echo "[TASK 5] Install containerd runtime"
+export DEBIAN_FRONTEND=noninteractive
+apt-get update -qq >/dev/null
+apt-get install -qq -y apt-transport-https ca-certificates curl gnupg lsb-release >/dev/null
+mkdir -p /etc/apt/keyrings
+curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg
+echo \
+  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
+  $(lsb_release -cs) stable" > /etc/apt/sources.list.d/docker.list
+apt-get update -qq >/dev/null
+apt-get install -qq -y containerd.io >/dev/null
+containerd config default > /etc/containerd/config.toml
+sed -i 's/SystemdCgroup \= false/SystemdCgroup \= true/g' /etc/containerd/config.toml
+systemctl restart containerd
+systemctl enable containerd >/dev/null
+
+echo "[TASK 6] Set up kubernetes repo"
+curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.29/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:/v1.29/deb/ /' > /etc/apt/sources.list.d/kubernetes.list
+
+echo "[TASK 7] Install Kubernetes components (kubeadm, kubelet and kubectl)"
+apt-get update -qq >/dev/null
+apt-get install -qq -y kubeadm kubelet kubectl >/dev/null
+
+echo "[TASK 8] Enable ssh password authentication"
+sed -i 's/^PasswordAuthentication .*/PasswordAuthentication yes/' /etc/ssh/sshd_config
+echo 'PermitRootLogin yes' >> /etc/ssh/sshd_config
+systemctl reload sshd
+
+echo "[TASK 9] Set root password"
+echo -e "kubeadmin\nkubeadmin" | passwd root >/dev/null 2>&1
+echo "export TERM=xterm" >> /etc/bash.bashrc
+
+echo "[TASK 10] Update /etc/hosts file"
+cat >>/etc/hosts<<EOF
+172.16.16.100   kmaster.example.com     kmaster
+172.16.16.101   kworker1.example.com    kworker1
+172.16.16.102   kworker2.example.com    kworker2
+EOF