How to stop a Daemon Server in Rails?

Question

I am running my rails application using the following

  $script/server -d webrick 

on my Ubuntu system , above command run the webrick s

Answer 1

The only proper way to kill the Ruby on Rails default server (which is WEBrick) is:

kill -INT $(cat tmp/pids/server.pid)

If you are running Mongrel, this is sufficient:

kill $(cat tmp/pids/server.pid)

Use kill -9 if your daemon hung. Remember the implications of kill -9 - if the data kept in Active Record caches weren't flushed to disk, you will lose your data. (As I recently did)

Answer 2

i don't think it does if you use -d. I'd just kill the process.

In the future, just open up another terminal window instead and use the command without -d, it provides some really useful debugging output.

If this is production, use something like passenger or thin, so that they're easy to stop the processes or restart the servers

Answer 3

if it can be useful, on linux you can find which process is using a port (in this case 3000) you can use:

lsof -i :3000

it'll return the pid too

Answer 4

You can start your server in the background by adding -d to your command. For instance:

puma -d

To stop it, just kill whatever process is running on port 3000:

kill $(cat tmp/pids/server.pid)

Answer 5

The process id of the daemon server is stored in your application directory tmp/pids/. You can use your standard kill process_id with the information you find there.

Answer 6

one-liner:  kill -INT `ps -e | grep ruby | awk '{print $1}'`

ps -e lists every process on the system
grep ruby searches that output for the ruby process
awk passes the first argument of that output (the pid) to kill -INT.

Try it with echo instead of kill if you just want to see the PID.