Start of QEMU K3s based CI

.gitignore

@@ -24,3 +24,10 @@ Dockerfile.cross
 *.swp
 *.swo
 *~
+
+# K3s VM testing
+script/vms/*.img
+script/vms/ssh_key*
+script/vms/serial.log
+script/vms/kubeconfig
+script/vms/user-data.yaml

script/vms/k3s.sh

@@ -0,0 +1,282 @@
+#!/bin/sh -eu
+
+set_vars() {
+  echo "QEMU K3s Ports(SSH=${K3S_SSH_PORT:=2222} API=${K3S_API_PORT:=16443} web=${K3S_WEB_PORT:=8080})"
+  echo "Kubeconfig: ${KUBECONFIG:=kubeconfig}"
+  echo "Image: ${IMG:=container.tar}"
+
+  rund=${XDG_RUNTIME_DIR-/tmp/$USER}/prem-operator
+  pid_file="${rund}/qemu.pid"
+  here=$(dirname "$0")
+
+  echo "Runtime dir: $rund"
+}
+
+# Function for 'boot-qemu-daemon' subcommand
+boot_qemu_daemon() {
+  echo "Booting QEMU as a daemon..."
+
+  mkdir -p $rund
+
+  if [ -f "$pid_file" ] && ps -p $(cat "$pid_file") > /dev/null 2>&1; then
+      echo "QEMU is already running. Exiting."
+      exit 1
+  fi
+
+  if [ $# -lt 1 ]; then
+    QCOW=temp.img
+    rm -f temp.img
+    qemu-img create -F qcow2 -f qcow2 -b k3s-base.img temp.img
+  else
+    QCOW=$1
+  fi
+
+  qemu-system-x86_64 \
+    -machine accel=kvm,type=q35 \
+    -cpu host \
+    -m 8G \
+    -device virtio-net-pci,netdev=net0 \
+    -netdev user,id=net0,hostfwd=tcp::${K3S_SSH_PORT}-:22,hostfwd=tcp::${K3S_API_PORT}-:6443,hostfwd=tcp::${K3S_WEB_PORT}-:80 \
+    -drive if=virtio,format=qcow2,file=$QCOW,cache=none \
+    -drive if=virtio,format=qcow2,file=seed.img \
+    -serial file:serial.log \
+    -pidfile "$pid_file" \
+    -display none \
+    -daemonize
+
+  echo "Started QEMU waiting for SSH"
+  local ssh_opts="-o StrictHostKeyChecking=no -o BatchMode=yes -o ConnectTimeout=5"
+  local timeout=120
+  local start_time=$(date +%s)
+
+  while ! ssh $ssh_opts -p "${K3S_SSH_PORT}" -i ssh_key [email protected] true; do
+    local current_time=$(date +%s)
+    local elapsed_time=$((current_time - start_time))
+
+    if [ "$elapsed_time" -ge "$timeout" ]; then
+      echo "Serial log output:"
+      tail -n 100 serial.log
+      echo "Killing QEMU..."
+      kill $(cat "$pid_file")
+      rm -f "$pid_file"
+      exit 1
+    fi
+
+    echo "Retrying SSH..."
+  done
+
+  echo "SSH connection established."
+}
+
+boot_qemu() {
+  echo "Booting QEMU..."
+
+  if [ $# -lt 1 ]; then
+    QCOW=temp.img
+    rm -f temp.img
+    qemu-img create -F qcow2 -f qcow2 -b k3s-base.img temp.img
+  else
+    QCOW=$1
+  fi
+
+  qemu-system-x86_64 \
+    -machine accel=kvm,type=q35 \
+    -cpu host \
+    -m 8G \
+    -device virtio-net-pci,netdev=net0 \
+    -netdev user,id=net0,hostfwd=tcp::${K3S_SSH_PORT}-:22,hostfwd=tcp::${K3S_API_PORT}-:6443,hostfwd=tcp::${K3S_WEB_PORT}-:80 \
+    -drive if=virtio,format=qcow2,file=$QCOW,cache=none \
+    -drive if=virtio,format=qcow2,file=seed.img \
+    -nographic
+}
+
+stop_qemu() {
+  if [ -f "$pid_file" ]; then
+      pid=$(cat "$pid_file")
+
+      if ps -p $pid > /dev/null 2>&1; then
+          # Check if the process is QEMU
+          if ps -p $pid -o comm= | grep -q "qemu-system"; then
+              echo "QEMU pid $pid found. Killing it..."
+
+              kill $pid
+          else
+              echo "PID file found, but the process is not QEMU. Skipping termination."
+          fi
+      else
+          echo "PID file found, but the process is not running. Removing the PID file..."
+      fi
+
+      rm -f "$pid_file"
+  else
+      echo "No QEMU PID file found."
+  fi
+}
+
+shutdown_qemu() {
+  local timeout=120
+  local interval=2
+
+  echo "Shutdown QEMU..."
+  ssh -o BatchMode=yes -p $K3S_SSH_PORT -i ssh_key [email protected] sudo systemctl poweroff
+
+  if [ -f "$pid_file" ]; then
+    local pid=$(cat "$pid_file")
+
+    echo "Waiting for QEMU to exit..."
+    while [ $timeout -gt 0 ]; do
+        if kill -0 "$pid" 2>/dev/null; then
+          sleep $interval
+        else
+          echo "QEMU Process $pid has exited."
+          return
+        fi
+        timeout=$((timeout - interval))
+    done
+  else
+    echo "No QEMU PID file found."
+  fi
+
+  echo "Timeout reached. QEMU process $pid is still running."
+  stop_qemu
+}
+
+install_k3s() {
+  echo "Installing k3s..."
+
+  k3sup install --ip ${K3S_IP-0.0.0.0} --ssh-key ssh_key --ssh-port ${K3S_SSH_PORT-22} --user ${K3S_USER-ubuntu}
+  sed -i -e s/:6443/:${K3S_API_PORT}/ ./kubeconfig
+  k3sup ready --kubeconfig=./kubeconfig
+}
+
+cloud_init() {
+  echo "Could init"
+
+  if [ ! -f ssh_key ]; then
+    ssh-keygen -t ed25519 -f ssh_key -C "pou3" -N ""
+  else
+    echo "ssh_key exists, skipping key creation"
+  fi
+  local pub_key=$(cat ssh_key.pub)
+  cat > user-data.yaml <<EOF
+#cloud-config
+growpart:
+  mode: auto
+  devices: ["/"]
+
+sudo: ALL=(ALL) NOPASSWD:ALL
+ssh_authorized_keys:
+  - $pub_key
+EOF
+
+  cloud-localds -d qcow2 seed.img user-data.yaml metadata.yaml
+  if [ ! -f ubuntu-base.img ]; then
+    curl https://cloud-images.ubuntu.com/minimal/releases/jammy/release/ubuntu-22.04-minimal-cloudimg-amd64.img -o ubuntu-base.img
+  else
+    echo "ubuntu-base.img exists, skipping download"
+  fi
+  qemu-img create -F qcow2 -f qcow2 -b ubuntu-base.img k3s-base.img 200G
+
+  ssh-keygen -R [0.0.0.0]:2222
+  boot_qemu_daemon k3s-base.img
+  install_k3s
+  shutdown_qemu
+}
+
+setup_image() {
+  echo "Setup Image"
+
+  export KUBECONFIG
+
+  kubectl apply -f ./priv-shell.yaml --prune -l premai.io/util=shell
+  kubectl -n shell wait --for=condition=Ready pods/shell
+  kubectl cp $IMG shell/shell:/tmp
+  kubectl -n shell exec -it pods/shell -- k3s ctr images import /tmp/$IMG
+}
+
+tests() {
+  echo "e2e tests"
+
+  export KUBECONFIG=$(realpath $KUBECONFIG)
+
+  kubectl -n prem-operator-system wait --for=condition=Available deployments/prem-operator-controller-manager
+  cd ../../tests && go run github.com/onsi/ginkgo/v2/ginkgo -r -v ./e2e
+}
+
+clean() {
+  rm -r ./*.img
+  rm -r ./ssh_key*
+  rm -r ./serial.log
+  rm -r ./kubeconfig
+  rm -r ./user-data.yaml
+}
+
+show_help() {
+  echo "Usage: $0 <command> [options]"
+  echo ""
+  echo "Commands:"
+  echo "  boot-qemu-daemon  Boot QEMU as a daemon"
+  echo "  boot-qemu         Boot QEMU"
+  echo "  stop-qemu         Stop QEMU"
+  echo "  shutdown-qemu     Shutdown QEMU"
+  echo "  install-k3s       Install k3s to a running system"
+  echo "  cloud-init        Create a new VM and install K3s on it"
+  echo "  setup-image       Add the operator container image to a running system"
+  echo "  tests             Run e2e tests"
+  echo "  clean             Clean up all created files"
+  echo "  help              Show this help message"
+}
+
+# Check if at least one argument is provided
+if [ $# -lt 1 ]; then
+    show_help
+    exit 1
+fi
+
+original_pwd=$(pwd)
+cd $(dirname $0)
+
+cleanup() {
+  cd "$original_pwd"
+}
+trap cleanup EXIT
+
+set_vars
+
+case "$1" in
+  boot-qemu-daemon)
+    boot_qemu_daemon "${@:2}"
+    ;;
+  boot-qemu)
+    boot_qemu "${@:2}"
+    ;;
+  stop-qemu)
+    stop_qemu "${@:2}"
+    ;;
+  shutdown-qemu)
+    shutdown_qemu "${@:2}"
+    ;;
+  install-k3s)
+    install_k3s "${@:2}"
+    ;;
+  cloud-init)
+    cloud_init "${@:2}"
+    ;;
+  setup-image)
+    setup_image "${@:2}"
+    ;;
+  tests)
+    tests "${@:2}"
+    ;;
+  clean)
+    clean
+    ;;
+  help)
+    show_help
+    ;;
+  *)
+    echo "Error: Unknown command '$1'"
+    show_help
+    exit 1
+    ;;
+esac

script/vms/metadata.yaml

@@ -0,0 +1,3 @@
+instance-id: pou3
+local-hostname: pou3
+

script/vms/priv-shell.yaml

@@ -0,0 +1,37 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: shell
+  labels:
+    premai.io/util: shell
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: shell
+  namespace: shell
+  labels:
+    premai.io/util: shell
+spec:
+  hostNetwork: true
+  hostPID: true
+  hostIPC: true
+  volumes:
+  - name: root
+    hostPath:
+      path: /
+  containers:
+  - image: alpine
+    name: shell
+    securityContext:
+      privileged: true
+      procMount: Unmasked
+      seccompProfile:
+        type: Unconfined
+    command:
+    - /bin/sh
+    stdin: true
+    tty: true
+    volumeMounts:
+    - mountPath: /
+      name: root