Comments URL: https://news.ycombinator.com/item?id=48368232

Points: 4

# Comments: 2

  #!/bin/bash
  set -euo pipefail
  
  IMAGE_NAME="my-app"
  IMAGE_TAG="latest"
  
  # A temporary Docker registry that runs on your local machine during deployment.
  LOCAL_REGISTRY="localhost:5000"
  REMOTE_IMAGE_NAME="${LOCAL_REGISTRY}/${IMAGE_NAME}:${IMAGE_TAG}"
  REGISTRY_CONTAINER_NAME="temp-deploy-registry"
  
  # SSH connection details.
  # The jump host is an intermediary server. Remove `-J "${JUMP_HOST}"` if not needed.
  JUMP_HOST="user@jump-host.example.com"
  PROD_HOST="user@production-server.internal"
  PROD_PORT="22" # Standard SSH port
  
  # --- Script Logic ---
  
  # Cleanup function to remove the temporary registry container on exit.
  cleanup() {
      echo "Cleaning up temporary Docker registry container..."
      docker stop "${REGISTRY_CONTAINER_NAME}" >/dev/null 2>&1 || true
      docker rm "${REGISTRY_CONTAINER_NAME}" >/dev/null 2>&1 || true
      echo "Cleanup complete."
  }
  
  # Run cleanup on any script exit.
  trap cleanup EXIT
  
  # Start the temporary Docker registry.
  echo "Starting temporary Docker registry..."
  docker run -d -p 5000:5000 --name "${REGISTRY_CONTAINER_NAME}" registry:2
  sleep 3 # Give the registry a moment to start.
  
  # Step 1: Tag and push the image to the local registry.
  echo "Tagging and pushing image to local registry..."
  docker tag "${IMAGE_NAME}:${IMAGE_TAG}" "${REMOTE_IMAGE_NAME}"
  docker push "${REMOTE_IMAGE_NAME}"
  
  # Step 2: Connect to the production server and deploy.
  # The `-R` flag creates a reverse SSH tunnel, allowing the remote host
  # to connect back to `localhost:5000` on your machine.
  echo "Executing deployment command on production server..."
  ssh -J "${JUMP_HOST}" "${PROD_HOST}" -p "${PROD_PORT}" -R 5000:localhost:5000 \
    "docker pull ${REMOTE_IMAGE_NAME} && \
     docker tag ${REMOTE_IMAGE_NAME} ${IMAGE_NAME}:${IMAGE_TAG} && \
     systemctl restart ${IMAGE_NAME} && \
     docker system prune --force"
  
  echo "Deployment finished successfully."

Also I would love to see agent frameworks in java and other languages as well.

Comments URL: https://news.ycombinator.com/item?id=43132757

Points: 1

# Comments: 5