如何通过 Yarn 在 pm2 start 中指定应用程序版本？

Question

I have a Node.js + Express application, let's call myapp v0.3.0 , that I start with Yarn scripts , such as:

yarn prod

I've deployed my production application with PM2 , using:

pm2 start yarn --name myapp -- prod

This works and the app is properly deployed, but when I look at pm2 list , the version of the PM2 application is Yarn's version (0.39.1), not myapp 's version (0.3.0):

┌────┬───────┬───────────┬─────────┬──────┬────────┬────────┬───┬────────┬─────┬────────┬──────┬──────────┐
│ id │ name  │ namespace │ version │ mode │ pid    │ uptime │ ↺ │ status │ cpu │ mem    │ user │ watching │
├────┼───────┼───────────┼─────────┼──────┼────────┼────────┼───┼────────┼─────┼────────┼──────┼──────────┤
│ 1  │ myapp │ default   │ 0.39.1  │ fork │ 124777 │ 43h    │ 1 │ online │ 0%  │ 49.2mb │ pm2  │ disabled │
└────┴───────┴───────────┴─────────┴──────┴────────┴────────┴───┴────────┴─────┴────────┴──────┴──────────┘

My CI/CD tool uses the version field from PM2 to manage automatic deployments. Is there a way to make the version track the application version (eg 0.3.0) instead of Yarn's version?

Answer 1

Add yarnwrapper bash script in the same directory of your package.json:

#!/bin/bash
eval "/${HOME}/.nvm/versions/node/$(node -v)/bin/yarn prod"

Launch it with pm2:

pm2 start yarnwrapper --name myapp --interpreter bash