I m having trouble running prefect server on my local machin Prefect Community #prefect-server

I’m having trouble running prefect server on my lo...

Paul Schale

10/28/2021, 11:43 PM

I’m having trouble running prefect server on my local machine (MBP with intel processor). I believe it’s run successfully before, but today I’m getting this error message:

Error response from daemon: Ports are not available: listen tcp 127.0.0.1:5432: bind: address already in use

. I’ve tried restarting the computer, reinstalling docker desktop, and making a fresh conda environment with a fresh installation of prefect, but the error persists. When I run

lsof -i:5432

, I get no output. Any ideas for next troubleshooting steps?

Jake Kaplan

10/29/2021, 12:06 AM

Hey Paul, outside of Prefect do you run postgres on your local machine normally?

Jake Kaplan

10/29/2021, 12:08 AM

For example I installed postgres using homebrew and it normally runs on startup of my machine in the background.

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~ brew services
Name       Status  User       Plist
postgresql started jakekaplan /Users/jakekaplan/Library/LaunchAgents/homebrew.mxcl.postgresql.plist

And I get your same error if I do not stop postgres since it defaults to

Paul Schale

10/29/2021, 4:00 PM

No, it doesn’t appear to be running:

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$ brew services list
Name       Status  User Plist
emacs      stopped      
postgresql stopped

Paul Schale

10/29/2021, 4:00 PM

But that made me realize I can specify a different port for postgres; running

prefect server start --postgres-port 5433

works

👍 1

Jake Kaplan

10/29/2021, 7:21 PM

I'm sorry I couldn't help you find the initial issue but I'm glad you're able to find a workaround!

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