scale works wrong on running applications
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- JavaScript
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Description
I have a express application listening on the port 3000 + parseInt(process.env.NODE_APP_INSTANCE || 0)
I can do
pm2 start app.js --name api -i 3
3 instances start to listen on 3000, 3001 and 3002 no problem. I can restart or reload.
if I do
pm2 scale api 4
the four instance start to listen on 3002, ??? if I scale again start to listen on port 3000!
This is my first time using pm2
I have
- Node 0.12.4
- NPM 2.11.0
- PM2 0.12.15
What can I be doing wrong?
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First steps
- Read the whole issue, then the project's contributing guide.
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Research direction
Reproduce the behavior with app.js using pm2 start app.js --name api -i 3, then scale the api process as described and observe the assigned ports. Trace the scaling and instance-environment handling in PM2; done means the behavior is explained and the instance ports remain correct after repeated scaling, with a regression test or documented limitation.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- node.js
- Domain
- cli, devops
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100