Clustering not working with Bun

[harryqt]

What's going wrong?

Clustering do not work with Bun. 😕

How could we reproduce this issue?

The following spawns forked instead of cluster:

pm2 start --interpreter /opt/homebrew/bin/bun --instances 2 ./build/index.js

Supporting information

--- PM2 report ----------------------------------------------------------------
Date                 : Wed Sep 18 2024 14:47:12 GMT+0530 (India Standard Time)
===============================================================================
--- Daemon -------------------------------------------------
pm2d version         : 5.4.2
node version         : 20.17.0
node path            : /Users/harry/.bun/bin/pm2
argv                 : /opt/homebrew/Cellar/node@20/20.17.0/bin/node,/Users/harry/.bun/install/global/node_modules/pm2/lib/Daemon.js
argv0                : node
user                 : harry
uid                  : 501
gid                  : 20
uptime               : 7min
===============================================================================
--- CLI ----------------------------------------------------
local pm2            : 5.4.2
node version         : 20.17.0
node path            : /Users/harry/.bun/bin/pm2
argv                 : /opt/homebrew/Cellar/node@20/20.17.0/bin/node,/Users/harry/.bun/bin/pm2,report
argv0                : node
user                 : harry
uid                  : 501
gid                  : 20
===============================================================================
--- System info --------------------------------------------
arch                 : arm64
platform             : darwin
type                 : Darwin
cpus                 : Apple M2
cpus nb              : 8
freemem              : 313901056
totalmem             : 17179869184
home                 : /Users/harry

[Jarred-Sumner]

@harryqt try doing bun --bun run pm2 start --...

[harryqt]

bun --bun run pm2 start --instances 2 ./build/index.js

[mushonnip]

i checked pm2.log and found this. is this related @Jarred-Sumner ?

[mario-huang]

Me the same

[harryqt]

is this related

I don't think pm2 uses node:inspector

[mario-huang]

@harryqt Hi Bro, do you find any workaround?

[harryqt]

Nope. Had to revert back to Nodejs. ☹️

[dienstbereit]

Nope. Had to revert back to Nodejs. ☹️

Too bad I would actually like to save myself that but if there is no other solution you have to switch back to NodeJs 😢

[mario-huang]

[Al0olo]

Try to install bun using npm npm install -g bun, this worked for me.

[dienstbereit]

Try to install bun using npm npm install -g bun, this worked for me.

Unfortunately, I don't have the opportunity to test it at the moment. Has anyone else tried it and can confirm this?

[harryqt]

Try to install bun using npm npm install -g bun, this worked for me.

Unfortunately, I don't have the opportunity to test it at the moment. Has anyone else tried it and can confirm this?

@deanrather That won't work. @Al0olo thinks it works because pm2 will use node instead of bun under the hood.

[Al0olo]

@harryqt Actually in my case it was using ts-node instead of bun, so I assumed it's doing this by default.

[mario-huang]

Hi all, I find a workaround. https://github.com/mario-huang/web-frameworks/blob/master/javascript/durian.js/cluster.ts

bun run cluster.ts

[sindelio]

@mario-huang the link seems to take to a blank page.

[harryqt]

@sindelio Corrected: https://github.com/mario-huang/web-frameworks/blob/master/javascript/durian.js/cluster.ts

@mario-huang https://nodejs.org/api/os.html#oscpus:~:text=os.cpus().length%20should%20not%20be%20used%20to%20calculate%20the%20amount%20of%20parallelism%20available%20to%20an%20application.%20Use%20os.availableParallelism()%20for%20this%20purpose

[mario-huang]

@mario-huang the link seems to take to a blank page.

sorry, fixed

[mario-huang]

@sindelio Corrected: https://github.com/mario-huang/web-frameworks/blob/master/javascript/durian.js/cluster.ts

@mario-huang https://nodejs.org/api/os.html#oscpus:~:text=os.cpus().length%20should%20not%20be%20used%20to%20calculate%20the%20amount%20of%20parallelism%20available%20to%20an%20application.%20Use%20os.availableParallelism()%20for%20this%20purpose

That's better, thanks.

[dienstbereit]

Before I do the work and finally switch back from bun to node js, I wanted to ask the community again... what do you think... will bun run out of the box with pm2 in cluster mode in the foreseeable future? I have the feeling that neither @Jarred-Sumner and @Unitech have much interest in this at the moment. What do you think?

[Unitech]

Will do

[dienstbereit]

@Unitech Will do

This is good news for many in the bun community. I hope that the compatibility will be integrated in one of the next releases very soon?

[dienstbereit]

Will do

@Unitech can you already estimate when you will integrate compatibility from Bun? Will it perhaps be in the next release?

[harryqt]

Will do

@Unitech can you already estimate when you will integrate compatibility from Bun? Will it perhaps be in the next release?

https://github.com/Unitech/pm2/tree/development

[dienstbereit]

Will do

@Unitech can you already estimate when you will integrate compatibility from Bun? Will it perhaps be in the next release?

https://github.com/Unitech/pm2/tree/development

Oh... I hadn't even seen that. Thank you very much!

[Unitech]

Work in progress : https://github.com/Unitech/pm2/commit/d9e6964f46a9666d7ebad20aac42cbda25e93faf

[Unitech]

Full Bun support is available in beta, please could you try it and report me any bugs:

bun install pm2-beta -g
pm2 update

Thanks

[boredjoker]

what's the plan on releasing

[kiyasov]

Apparently this release will never be released

[dienstbereit]

Apparently this release will never be released

Maybe because the community does not support testing!?

[Unitech]

Let me know when you've tried it and confirmed that it works as expected, then I will make a release