Question
Deploying a React app using pm2 and serve in App Platform
- Posted on September 9, 2021
- ReactDeploymentDigitalOcean App Platform
Asked by mateusAxolotl
Hi, I am trying to setup PM2 to run a React app I am deploying using the App Platform. The purpose is to have PM2 to automatically restart the app in case it crashes. However I am not able to properly configure the app.yaml to make it work. An example of the app.yaml that I have is:
services:
- name: app
build_command: npm install pm2 serve -g && npm run build
environment_slug: node-js
github:
branch: main
deploy_on_push: true
repo: repo/app
http_port: 8080
instance_count: 1
instance_size_slug: professional-xs
routes:
- path: /
run_command: pm2-runtime serve build 8080 --spa
source_dir: /
With these settings, the app deploys, but when I try to access it using the app URL, I get a page that shows the file directory. Also I get two PM2 looping errors after the build:
PM2 error: Error caught while calling pidusage
PM2 error: Error: ESPIPE: invalid seek, read
Probably I am not using a proper run command. Also, should I be using pm2 or pm2-runtime?
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👋 @mateusAxolotl
This is occurring because
pidusageuses an underlying SYSCALL which is not available on App Platform, this is part of our underlying sandbox technology called gVisor. Here’s a thread of users who’ve run into this on gVisor based services, like App Platform and Google Cloud Run.The good news is that for monitoring your app and restarting it on crashes is already a built-in feature of App Platform. Running
node app.jsshould be all you need.In addition, we recently released alerts and notifications which support getting alerts on restart counts. Here’s a youtube video talking all about this feature.
Hope this helps!