Namespacing doesn't work when using Popen in a runned pm2

What's going wrong?

Hello guys!

I have worked abit with name spacing and I have realized that if you try to do a namespacing inside a script that is runned by pm2 and Popen etc:

Popen(f"pm2 start test.py --name test1 --namespace testing --interpreter=python3", shell=True).communicate()

That will not create a namespace for the name testing.

How could we reproduce this issue?

test_new.py - Run this FIRST with pm2 start test_new.py --interpreter=python3

from subprocess import Popen

Popen(f"pm2 start test.py --name test1 --namespace testing --interpreter=python3", shell=True).communicate()

test.py

print("hello world!")

What should happend is that test.py should have the name = test and namespace = testing but it says default instead.

Excepted result:

--- PM2 report ----------------------------------------------------------------
Date                 : Sun Jul 12 2020 15:09:14 GMT+0200 (GMT+02:00)
===============================================================================
--- Daemon -------------------------------------------------
pm2d version         : 4.4.1
node version         : 12.18.1
node path            : /usr/bin/pm2
argv                 : /usr/bin/node,/usr/lib/node_modules/pm2/lib/Daemon.js
argv0                : node
user                 : autosnkr
uid                  : 1000
gid                  : 1000
uptime               : 17535min
===============================================================================
--- CLI ----------------------------------------------------
local pm2            : 4.4.1
node version         : 12.18.1
node path            : /usr/bin/pm2
argv                 : /usr/bin/node,/usr/bin/pm2,report
argv0                : node
user                 : autosnkr
uid                  : 1000
gid                  : 1000
===============================================================================
--- System info --------------------------------------------
arch                 : x64
platform             : linux
type                 : Linux
cpus                 : Intel(R) Core(TM) i7-8700T CPU @ 2.40GHz
cpus nb              : 12
freemem              : 9361747968
totalmem             : 16616714240
home                 : /home/autosnkr
===============================================================================
--- PM2 list -----------------------------------------------
┌─────┬───────────────────────────────────┬─────────────┬─────────┬─────────┬──────────┬────────┬──────┬───────────┬──────────┬──────────┬──────────┬──────────┐
│ id  │ name                              │ namespace   │ version │ mode    │ pid      │ uptime │ ↺    │ status    │ cpu      │ mem      │ user     │ watching │
├─────┼───────────────────────────────────┼─────────────┼─────────┼─────────┼──────────┼────────┼──────┼───────────┼──────────┼──────────┼──────────┼──────────┤
│ 297 │ test		  	          │ default     │ N/A     │ fork    │ 5234     │ 10m    │ 3    │ online    │ 0%       │ 13.5mb   │ autosnkr │ disabled │
└─────┴───────────────────────────────────┴─────────────┴─────────┴─────────┴──────────┴────────┴──────┴───────────┴──────────┴──────────┴──────────┴──────────┘
[PM2][WARN] Current process list running is not in sync with saved list. aplace hoopz paulfriends solestory streetlab differs. Type 'pm2 save' to synchronize.
===============================================================================
--- Daemon logs --------------------------------------------
/home/autosnkr/.pm2/pm2.log last 20 lines:
PM2        | 2020-07-12T14:58:47: PM2 log: App [test:297] starting in -fork mode-
PM2        | 2020-07-12T14:58:47: PM2 log: App [test:297] online

Supporting information

I love you guys for what you guys have done <3

Run the supplied test_new.py and test.py commands, then compare the resulting pm2 list output with the expected testing namespace. Trace how the CLI handles --namespace when PM2 is started through Python Popen; done means the launched test process appears with name test in namespace testing.