A server is already running. Check …/tmp/pids/server.pid. Exiting - rails

Question

``` ..$ rails s => Booting WEBrick => Rails 4.0.4 application starting in development on http://0.0.0.0:3000 => Run `rails server -h` for more startup options => Ctrl-C to shutdown server A server is already running. Check /home/..name/rprojects/railsapp/tmp/pids/server.pid. Exiting ``` what is the easiest way to solve this for a rails beginner?

Accepted Answer

You can delete the `server.pid` file.

```
rm /your_project_path/tmp/pids/server.pid
```

Else:

try in OSX:

```
sudo lsof -iTCP -sTCP:LISTEN -P | grep :3000
```

or in linux:

ps -aef | grep rails

or

```
lsof -wni tcp:3000
```

kill the process using

```
kill -9 PID (eg,2786)
```

A server is already running. Check …/tmp/pids/server.pid. Exiting - rails

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