Pm2: node_args are not passed to the node with pm2-docker

[vmarchaud]

I'm trying to enable remote debugging on my container but docker-pm2 is not passing the interpreter args to the interpreter:

/app # pm2 show ux
 Describing process with id 0 - name ux
┌───────────────────┬──────────────────────────┬──────────────┐
│ status            │ online                   │
│ name              │ ux                       │
│ restarts          │ 0                        │
│ uptime            │ 6m                       │
│ script path       │ /opt/ux/index.js         │
│ script args       │ N/A                      │
│ error log path    │ /dev/stderr              │
│ out log path      │ /dev/stdout              │
│ pid path          │ /tmp/ux_pm2-0.pid        │
│ interpreter       │ node                     │
│ interpreter args  │ --inspect                │ --debug=5859 │
│ script id         │ 0                        │
│ exec cwd          │ /app                     │
│ exec mode         │ cluster_mode             │
│ node.js version   │ 9.0.0                    │
│ watch & reload    │ ✘                        │
│ unstable restarts │ 0                        │
│ created at        │ 2017-11-04T16:31:14.627Z │
└───────────────────┴──────────────────────────┴──────────────┘
 Code metrics value
┌────────────┬─────────┐
│ Loop delay │ 27.81ms │
└────────────┴─────────┘
 Add your own code metrics: http://bit.ly/code-metrics
 Use `pm2 logs ux [--lines 1000]` to display logs
 Use `pm2 monit` to monitor CPU and Memory usage ux
/app # pm2 monit
/app # ps
PID   USER     TIME   COMMAND
    1 root       0:01 node /usr/local/bin/pm2-docker start /opt/pm2.json
   22 root       0:01 PM2 v2.7.2: God Daemon (/root/.pm2)
   28 root       0:04 node /opt/ux/index.js
   48 root       0:00 /bin/sh
   84 root       0:00 ps

as you can see on the output of ps, node is not getting the extra args.

[luisdavim]

I'm trying to use docker to create a cross platform local dev environment and this prevents me from using it for debugging.

[luisdavim]

hi, any news about this?

[luisdavim]

Hi, I've investigated this issue a bit more and the problem doesn't seem to be exclusive to pm2-docker, I'm using the same docker container image (keymetrics/pm2 latest 695685bbe71b 2 days ago 89.8MB) but I've overdid the docke command to use pm2 instead of pm2-docker (CMD [ "pm2", "start", "--no-daemon", "/opt/pm2.json" ]
) and I see the same issue there:

/app # ps faux
PID   USER     TIME   COMMAND
    1 root       0:01 node /usr/local/bin/pm2 start --no-daemon /opt/pm2.json
   23 root       0:06 node /opt/ux/index.js
   53 root       0:00 /bin/sh
   59 root       0:00 ps faux
/app # pm2 --version
2.8.0
/app # pm2-docker --version
2.8.0
/app # cat /opt/pm2.json
{
  "apps": [{
    "name": "ux",
    "script": "/opt/ux/index.js",
    "log_date_format": "YYYY-MM-DD HH:mm Z",
    "pid_file": "/tmp/ux_pm2.pid",
    "error_file": "/dev/stderr",
    "out_file": "/dev/stdout",
    "instances": 1,
    "node_args": ["--inspect", "--debug=5859"],
    "exec_mode": "cluster"
  }]
}
/app # pm2 show ux
 Describing process with id 0 - name ux
┌───────────────────┬──────────────────────────┬──────────────┐
│ status            │ online                   │
│ name              │ ux                       │
│ restarts          │ 0                        │
│ uptime            │ 2m                       │
│ script path       │ /opt/ux/index.js         │
│ script args       │ N/A                      │
│ error log path    │ /dev/stderr              │
│ out log path      │ /dev/stdout              │
│ pid path          │ /tmp/ux_pm2-0.pid        │
│ interpreter       │ node                     │
│ interpreter args  │ --inspect                │ --debug=5859 │
│ script id         │ 0                        │
│ exec cwd          │ /app                     │
│ exec mode         │ cluster_mode             │
│ node.js version   │ 9.2.0                    │
│ watch & reload    │ ✘                        │
│ unstable restarts │ 0                        │
│ created at        │ 2017-12-05T13:09:54.101Z │
└───────────────────┴──────────────────────────┴──────────────┘
 Code metrics value
┌────────────┬──────────┐
│ Loop delay │ 123.36ms │
└────────────┴──────────┘
 Add your own code metrics: http://bit.ly/code-metrics
 Use `pm2 logs ux [--lines 1000]` to display logs
 Use `pm2 monit` to monitor CPU and Memory usage ux

[luisdavim]

this seems to be working with PM2 version 2.7.2 without docker.

[luisdavim]

@vmarchaud maybe we should update the issue title since this is not affecting pm2-docker only.

[luisdavim]

tested with "exec_mode": "fork" and I still have the same issue:

{
  "apps": [{
    "name": "ux",
    "script": "/opt/ux/index.js",
    "log_date_format": "YYYY-MM-DD HH:mm Z",
    "pid_file": "/tmp/ux_pm2.pid",
    "error_file": "/dev/stderr",
    "out_file": "/dev/stdout",
    "instances": 1,
    "node_args": ["--inspect", "--debug=5859"],
    "exec_mode": "fork"
  }]
}

[nagy-tamas]

this worked for me with node8:

instances: 1
exec_mode: fork
node_args: [ "--inspect=0.0.0.0:9229" ]

of course, you also need to open port 9229 on the container (-p 9229:9229)

[Unitech]

pending release

[wallet77]

PM2 2.10.1 has been release:

$ npm install pm2@latest -g
$ pm2 update