I know that there are answers for this question, but I don't want to create one more config file and load all the configuration there and run the pm2 process.
Project Structure
-----------------
.env
index.js -> server is listening in this file
routes/
models/
middleware/
startup/
package.json
...
Inside package.json
{
"name": "eventbooking",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "node -r dotenv/config index.js"
},
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"@hapi/joi": "^15.0.3",
"bcryptjs": "^2.4.3",
"compression": "^1.7.4",
"dotenv": "^8.0.0",
"express": "^4.17.1",
"express-async-errors": "^3.1.1",
"helmet": "^3.18.0",
"joi-objectid": "^2.0.0",
"jsonwebtoken": "^8.5.1",
"mongoose": "^5.5.14",
"winston": "^3.2.1"
}
}
As you see from my package.json file that I am loading the node -r dotenv/config index.js file from scripts > start
When I run locally with the following command
npm start
The project works totally fine.
Now I have deployed the project to the server and there if I manually run
npm start
then works fine.
When I install PM2 in Ubuntu Server in production and do the following steps then it's not working.
Step 1: Mode inside the project folder in the root directory and
pm2 start index.js --name "Event Booking"
Then getting the following
App name │ id │ version │ mode │ pid │ status │ restart │ uptime │ cpu │ mem │ user │ watching │
├──────────┼────┼─────────┼──────┼───────┼────────┼─────────┼────────┼─────┼──────────┼──────┼──────────┤
│ index │ 0 │ 1.0.0 │ fork │ 29897 │ online │ 0 │ 0s │ 0% │ 3.7 MB │ root │ disabled
But the project not working. Whats the issue.
Even when I run the following as
pm2 start -r dotenv/config index.js --name 'Event Booking'
Then getting error as
error: unknown option `-r'
Any other solution to run the script with pm2
There are 2 ways to achieve a solution.
Solution 1:
When running the pm2 process run with the --node-args as follows
pm2 start index.js --name eventbooking --node-args="-r dotenv/config"
You can pass multiple arguments with space separated, other than dotenv/config I didn't need much as I am loading everything from dotenv package but showing just for demo as follows
pm2 start index.js --name eventbooking --node-args="-r dotenv/config --production --port=1337"
Solution 2:
Alternatively, you can initialize your project with pm2 init this will create the pm2 configuration file with name ecosystem.config.js
For me for some reasons the args under app didn't work so I had to add node_args again as follows
{
"apps": [
{
"name": "eventbooking",
"script": "./index.js",
"node_args": ["-r dotenv/config"]
}
]
}
Actually, I am sticking with solution 1 for cleaner and minimal code mode.
In case if anyone interested with PM2 options then please visit the following link