首次部署Play应用至Google Cloud的技术问题咨询

Hey there! I’ve been through deploying Play apps to GCP a few times, so let me walk you through these questions clearly:

1. Do I need to create compute resources in GCP first? And what VM configuration should I use for testing? #

• Yes, you absolutely need to set up compute resources to run your packaged Play app—your local zip won’t run on GCP unless you have a server instance to host it.
• For your testing phase (no external users), go with a low-cost, lightweight VM to keep things simple and save costs:
  • Instance type: Start with e2-micro (it’s eligible for GCP’s free tier, perfect for testing). If you need a tiny bit more power, n1-standard-1 works too, but e2-micro is more than enough for a test environment.
  • Operating System: Pick Ubuntu or Debian—they’re widely supported, easy to configure, and have straightforward package managers for installing Java.
  • Region: Choose a region close to your location to minimize latency when accessing the test app.
  • Firewall: Don’t forget to open port 9000 (Play’s default port) in the VM’s firewall rules so you can access the app from your browser.

2. Do I need to install Netty on the compute resource since Play uses Netty Web Server? #

• Nope, you don’t need to install Netty separately! Play’s dist command packages everything your app needs to run—including the embedded Netty server. The zip file is a fully self-contained bundle.
• All you need on the VM is a compatible Java Runtime Environment (JRE) matching the version your Play 2.5.x app was built with (Play 2.5.x typically supports Java 8 or 11). You can install it with a simple command like sudo apt install openjdk-8-jre (adjust the version number as needed).
• Once you’ve got JRE set up, just unzip your app bundle, navigate to the extracted directory, and run ./bin/your-app-name (replace your-app-name with your actual app’s name) to start the server.

内容的提问来源于stack exchange，提问作者Manu Chadha