Added documentation for PM2.

ving/docs/.vitepress/config.js

@@ -34,6 +34,7 @@ export default defineConfig({
           { text: 'Jobs', link: '/subsystems/jobs' },
           { text: 'Logging', link: '/subsystems/logging' },
           { text: 'Message Bus', link: '/subsystems/messagebus' },
+          { text: 'PM2', link: '/subsystems/pm2' },
           { text: 'Rest', link: '/subsystems/rest' },
           { text: 'Social Integration', link: '/subsystems/social' },
           { text: 'UI', link: '/subsystems/ui' },

ving/docs/change-log.md

@@ -4,6 +4,11 @@ outline: deep
 # Change Log
 
 ## September 2024
+
+### 2024-09-06
+* Added documentation for PM2.
+
+### 2024-09-01
 * Created process.json for PM2.
 
 ## August 2024

ving/docs/subsystems/pm2.md

@@ -0,0 +1,51 @@
+---
+outline: deep
+---
+# PM2
+[PM2 or Node Process Manager 2](https://github.com/Unitech/pm2) is a framework for managing long-running processes. We use it to manage the Ving web and jobs servers in production.
+
+## Setup
+
+### Install
+Install PM2 globally on your server like so:
+
+```bash
+npm i -g pm2
+```
+
+### Make a Process File
+There is a file called `process.json` in the root of your project. Copy that file to match the name of whatever processes you need it to run for the specific environment you're targeting. For example, it could be `prod.json` or `qa-process.json`. It's up to you.
+
+### Edit the Process File
+The process file has rules for what processes should be run, and how they should be managed. `process.json` has sane defaults, but you can change them to your liking. 
+
+By default it will run 1 nuxt process per CPU core of your server, plus 2 job workers. [Click here](https://pm2.keymetrics.io/docs/usage/application-declaration/) for more information on how to configure PM2.
+
+## Using PM2
+
+*Note:* To use PM2 you need to be in the root folder of your project.
+
+### Start the Processes
+
+```bash
+pm2 start process.json
+```
+
+### Stop the Processes
+
+```bash
+pm2 stop all
+```
+
+### View the Processes
+
+```bash
+pm2 monit
+```
+
+### More Commands
+
+```bash
+pm2 --help
+pm2 [command] --help
+```