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Ruby Installing Rails on Linux

Posted by Training Poplify
Training Poplify
12,079 Points

How to change default port in rails5.

I tried to change by writing port ENV.fetch("PORT") { 4000 } in puma.rb? But in terminal it says: Rails 5.0.0.1 application starting in development on http://localhost:3000.

2 Answers

Ilya Dolgirev
Ilya Dolgirev
35,375 Points
Ilya Dolgirev
Ilya Dolgirev
35,375 Points

You can use 

rails server -p 4000

Another option is to export environment variable named PORT and assign it to desired port like this:

export PORT=4000

Then you just use

rails server

But remember that after restart you'll lose that variable and you'll have to export it again. I do recommend you to use dotenv gem to manage stuff like this

Training Poplify
Training Poplify
12,079 Points

Thanks Ilya Dolgirev, I have one more doubt. Can we run multiple localhost at a time. Like one project is running on localhost:3000 and another project is on localhost:4000

Ilya Dolgirev
Ilya Dolgirev
35,375 Points
Ilya Dolgirev
Ilya Dolgirev
35,375 Points

The best way to get the answer is to check it literally as you described it ;)

The answers are both YES and NO. YES, you can do it if your projects are different. Just assign the desired ports. NO if you'll try to start the same projects on different ports.