Introduction
PM2 is a daemon process manager that will help you manage and keep your application online 24/7.
It has a lot of features that will help you in the process of deploying and maintaining your application.
Additionally PM2 allows you to run a nodeJS server in cluster mode.
Which dramatically improves the performance of your application and allows you to scale your application horizontally.
In this article we will cover the following:
- Setting up a Nx monorepo
- Setting up a NestJS project within the Nx Monorepo.
- Running NestJS with PM2 using Nx-PM2-Plugin.
It must be noted that the same approach can be used for any nodeJS project within Nx.
1. Setting up a Nx Monorepo
In this section we will be setting up a Nx monorepo using the integrated mode scheme.
npx create-nx-workspace@latest myorg --preset=ts
A comprehensive guide to setting up the Nx monorepo can be found here;
2. Setting up NestJS
Nx provides a NestJS schematics to setup a NestJS project within the monorepo.
npm install -D @nx/nest
npx nx g @nx/nest:app my-nest-app
A comprehensive guide to setup NestJS within Nx can be found here
3.Running NestJS with PM2
Install PM2 globally.
npm install pm2 -g
Install Nx-PM2-Plugin
npm i nx-pm2-plugin
Add the following task to project.json of the NestJS project.
"pm2": {
"executor": "nx-pm2-plugin:pm2-executor",
"options": {
"command": "my-nest-app:serve:production",
"name": "example"
}
}
You can now run the task using the following command:
npx nx run my-nest-app:pm2
You can monitor the service instances using the following command:
pm2 monit
Conclusion
PM2 is a daemon process manager that will help you manage and keep your application online 24/7. It has a lot of features that will help you in the process of deploying and maintaining your application.
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