Rocky Linux 8 - Kubernetes

Vagrantfile

# -*- mode: ruby -*-
# vi: set ft=ruby :

Vagrant.configure("2") do |config|
  config.vm.box = "generic/rocky8"
  memory = 6144
  cpus = 4

  config.vm.provider :virtualbox do |v|
    v.memory = memory
    v.cpus = cpus
  end

  config.vm.provider :libvirt do |v|
    v.memory = memory
    v.cpus = cpus
  end

  config.vm.provision "install-dependencies", type: "shell", run: "once" do |sh|
    sh.inline = <<~SHELL
      set -euxo pipefail

      # Install Kubernetes and CRI-O
      cat << 'EOF' > /etc/yum.repos.d/kubernetes.repo
      [kubernetes]
      name=Kubernetes
      baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-\$basearch
      enabled=1
      gpgcheck=1
      repo_gpgcheck=1
      gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
      exclude=kubelet kubeadm kubectl
      EOF

      export CRIO_OS=CentOS_8_Stream
      export CRIO_VERSION=1.23
      curl -L -o /etc/yum.repos.d/devel:kubic:libcontainers:stable.repo \
        https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/$CRIO_OS/devel:kubic:libcontainers:stable.repo
      curl -L -o /etc/yum.repos.d/devel:kubic:libcontainers:stable:cri-o:$CRIO_VERSION.repo \
        https://download.opensuse.org/repositories/devel:kubic:libcontainers:stable:cri-o:$CRIO_VERSION/$CRIO_OS/devel:kubic:libcontainers:stable:cri-o:$CRIO_VERSION.repo

      dnf upgrade -y
      dnf install -y \
        cri-o \
        cri-tools \
        iproute-tc \
        kubeadm \
        kubectl \
        kubelet \
        --disableexcludes=kubernetes


      cat << 'EOF' > /etc/cni/net.d/100-crio-bridge.conf
      {
        "cniVersion": "0.3.1",
        "name": "crio",
        "type": "bridge",
        "bridge": "cni0",
        "isGateway": true,
        "ipMasq": true,
        "hairpinMode": true,
        "ipam": {
          "type": "host-local",
          "routes": [{ "dst": "0.0.0.0/0" }],
          "ranges": [[{ "subnet": "10.85.0.0/16" }]]
        }
      }
      EOF

      systemctl enable --now crio kubelet

      # Configure system
      swapoff -a
      systemctl disable --now firewalld
      modprobe br_netfilter
      sysctl -w net.ipv4.ip_forward=1

      # Bootstrap cluster
      kubeadm init

      # Setup credentials
      USER=vagrant
      USERDIR=/home/$USER
      mkdir $USERDIR/.kube
      cp /etc/kubernetes/admin.conf $USERDIR/.kube/config
      chown -R $USER:$USER $USERDIR/.kube
      echo "alias k=kubectl" >> $USERDIR/.bashrc

      export KUBECONFIG=/etc/kubernetes/admin.conf
      kubectl taint nodes --all node-role.kubernetes.io/master-
    SHELL
  end
end