Can't set debug port by specifying --node-args="--debug=7001"

[MeanwhileMedia]

pm2 start main.js --node-args="--debug=7001"

When running the above cli command, the node process does receive the "--debug" argument, but ignores the port. The console responds:

Debugger listening on port 5863

I am assuming port #5863 is just a default selected by node. Any ideas why the port isn't getting set?

[soyuka]

From node man:

--debugger_port (Port to use for remote debugging)
               type: int  default: 5858

[MeanwhileMedia]

Hi @soyuka. Yeah I saw the --debugger_port option via "node --v8-options". Unfortunately, that isn't setting the port either. Strangely, the command below succeeds, which is why I was thinking this issue might be pm2 related.

node --debug=7001 main.js

I'm running pm2 v0.9.5, and node v0.11.13

[soyuka]

I've just tested with a basic server and the --debug=7001 option, the debugger is active on 7001. I'm using node 10.26 (omg that's old \o/).

❯ pm2 start forks/pm2/test/fixtures/server.js  --node-args="--debug=7001"                    
{ online: true, success: true, pid: 16134, pm2_version: '0.9.5' }
debugger listening on port 7001

Just tested with 0.11.13 and indeed the option doesn't work anymore with pm2 but works without - weird. Maybe that's a cluster issue with 0.11.13?

[MeanwhileMedia]

Thanks for verifying @soyuka - thought maybe I was going crazy. I haven't had time to check, but I'm wondering if this bug can be found in pm2-axon-rpc?

[soyuka]

But why would it work with 0.10.30 if it was?

[soyuka]

It's crazy but cluster execArgv --debug is replaced:

console.log(process.env.nodeArgs)
[harmony-0 (out) 2014-08-12T18:15:07] --harmony,--debug=7001
console.log(process.execArgv)
[harmony-0 (out) 2014-08-12T18:15:07] [ '--harmony', '--debug=5859' ]

I can't figure out why...

[Unitech]

Hope it will be fixed in Node 0.12

[gbertoncelli]

In your PM2 configuration file I think you have to use this parameters:
"node_args": ["--inspect=localhost:YOUR_PORT_NUMBER"]

[Shogobg]

@HighSoftWare96 it's not working.

[lucrus73]

Same here, it's not working. I start my process with

# pm2 start process.json

and here are the contents of process.json

{
    "apps": [{
        "name": "myapp-debug",
        "script": "app.js",
        "watch": true,
        "exec_mode": "cluster",
        "cwd": "/srv/myapp/",
        "instances": 1,
        "merge_logs": true,
        "error_file": "/var/log/myapp/error.log",
        "out_file": "/var/log/myapp/out.log",
	"node_args": ["--inspect=127.0.0.1:9230","--inspect-port=9230"],
        "env": {
           "MONGODB": "mongodb://admin:secret@localhost:27017/mydb",
           "TIMEZONE": "+01:00",
        }
    }]
}

after starting it I get node listening on a different port (currently 9694, but it changes on every restart). I've already tried several variations such as specifying --inspect only, or leaving out the ip address, and the like, but it never listens on 9230.
I'm using pm2 version 5.2.0 and node version 14.19.

Running node --inspect=9230 app.js does work as expected with the debugger listening on port 9230.

[lucrus73]

Same here, it's not working.

Never mind, it now works. I don't know what I did to make it work (or what I was doing wrong), but it works.