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37 lines
1.1 KiB
Markdown
37 lines
1.1 KiB
Markdown
# Set The Default Development Port
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For Rails 5+, Puma has been the default web server that gets installed with new
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Rails apps. Puma comes with some configuration in the `config/puma.rb` file.
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If you open that file up, you'll see a number of settings that can be
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configured. One of them is the `port` that `puma` uses.
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```ruby
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# Specifies the `port` that Puma will listen on to receive requests; default is 3000.
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#
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port ENV.fetch('PORT') { 3000 }
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```
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It looks for a `PORT` value in the envionrment and uses that if it is present.
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That means you could run:
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```bash
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PORT=5005 rails s
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```
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and Puma would server the local development server at `localhost:5005`. If that
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value is not present, it will fallback to `#fetch`'s block which contains
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`3000`.
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If you always want to local Rails development server to run at a port other
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than `3000`, all you need to do is update that line.
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```ruby
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port ENV.fetch('PORT') { 5005 }
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```
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Now, running `rails s` on its own will start the dev server up at
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`localhost:5005`.
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[source](https://schneems.com/2017/03/13/puma-ports-and-polish/)
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