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Discussion on: Something is already running on port 3000

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aledileo profile image
Alejandro Di Leo

Hi! Are you trying to run those few projects at the same time? If that's the case, it's possible that by default they will try to use that same port. Normally you can set PORT as an env variable to tell the project to run that specified port (this depends on the server being used). You can try running PORT=3001 npm start (or an equivalent to set env variables per command in your OS), changing the port value for each project

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equuscaballus profile image
equuscaballus

Hi

Thanks for the reply. Actually now while running the project if I change the port number then it runs !

Thank you for your help :)

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doepicshit0305 profile image
DoEpicShit0305

actually, you still didn't solve you problem, think how could you have been solved with changing the port, you should figure out, I am also facing same issue, but I also don't want to restart it and nor want to change the port

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equuscaballus profile image
equuscaballus

I was wondering if there is any way to define the port number in the source code ? For example if I want to set a different port number for different project ?

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aledileo profile image
Alejandro Di Leo

It really depends on the server and implementation being used. For example if the project is using create-react-app, you can create a .env file with all your project based env variables. This is because create-react-app uses dotenv. If you can find this out or you're able to share the github repo I may be able to assist further

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equuscaballus profile image
equuscaballus

I just downloaded the projects form github randomly. couldn't find the repository URL. Do you know in which file of the source code the port number is defined ?

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aledileo profile image
Alejandro Di Leo • Edited

That also depends on the server being used. You can check the package.json file for more info, for example the scripts part. What is the value for the start command?

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equuscaballus profile image
equuscaballus

I will check that . you are very helpful . Thanks a lot :)