How to make sure that no process is stopped when the terminal is disconnected (Putty)?

Question

linux

Tell me what could be the problem.
Installed Redmine on Debian + Nginx + Thin.
Recently, after disabling the terminal (I did not change the Putty settings), thin began to stop.
And all sorts of screen, &, tmux do not help.
I start manually thin

/etc/init.d/thin start
ps auxfww | grep thin

see

root     11984  0.0  0.0  11072   820 pts/0    S+   03:57   0:00      \_ grep thin
redmine  11966  1.4 13.6 317352 143200 ?       Sl   03:52   0:03 thin server (/tmp/thin.0.sock)

when the terminal is disconnected, Redmine crashes, and when I run Putty to see if thin works, the last command shows only the root user.

root     12003  0.0  0.0  11072   820 pts/0    S+   03:58   0:00      \_ grep thin

I can't understand where I've made up my mind... I
contacted the hosting admins, they start it up, turn it off and everything works (Linux terminal). Why doesn't it work for me? I did not change putty settings.
Updated: never found a solution, reinstalled Debian & Redmine & thin completely and everything works. Perhaps somewhere wiser with the settings last time.

Answer 1

This is of course not the right option (I think it’s correct to register it in services or whatever it’s called), but you can run it through screen:
> you are on the server
> screen
> thin launch command
> ctrl-a, ctrl-d
> you are back on the server
to return later to the screen session, just run screen -r

Answer 2

Kamrad nexthop 100% right - the problem is not in the terminal, but in crooked hands that Thin is falling. Smoke logs regarding the reasons of falling.

Answer 3

Install another terminal that would save sessions. Or write a demon. Well, or some tool for running programs in a separate thread.

Answer 4

classic nohup command &

Answer 5

You raise the process in screen, switch the screen, you can safely disconnect