Unable to make nodejs work in background by "&"

Question

I'm trying to start nodejs server in background:

nodejs  my_app.js &

But it shows the debug messages ("Starting at 0.0.0.0 ...") and then I disconnect from my server via ssh, it terminates. Why?

See this previous question: http://stackoverflow.com/questions/4797050/how-to-run-process-as-background-and-never-die — tschaible, Mar 02 '16 at 10:37

score 0 · Answer 1 · edited Mar 02 '16 at 10:37

0

Try:

nohup node my_app.js &

http://www.tutorialspoint.com/unix_commands/nohup.htm

edited Mar 02 '16 at 10:37

Kyll

7,036
7
41
64

answered Mar 02 '16 at 10:36

Sourbh Gupta

808
7
16

and still when I disconnect it terminates. – Mario Mar 02 '16 at 10:49
May be your server is terminates due to some error in code. you can check the logs by redirecting them into a file **nohup node my_app.js 1>./out.log 2>./error.log &** – Sourbh Gupta Mar 02 '16 at 11:44

Tomas Longo · Answer 2 · 2016-03-02T11:33:48.917

0

Because with '&' your node process is still tied to the calling process (e.g. the Shell you typed this in). By killing your ssh-session you also kill all of its child processes.

The answer from @SourbhGupta is the one go with. nohup lets the child process ignore the hang up Signal. So, killing the calling process has no effect on its child process.

edited Mar 02 '16 at 11:33

answered Mar 02 '16 at 11:20

Tomas Longo

95
1
7

score 0 · Answer 3 · answered Mar 02 '16 at 12:08

Run it inside screen.

Screen process runs on background.

1.sudo apt-get install screen

2.screen (To start a screen process)

3.Run your service

4.node my_app.js (without & will do)

5.Ctrl+a+k to detach it.

For more information on screen- https://www.digitalocean.com/community/tutorials/how-to-install-and-use-screen-on-an-ubuntu-cloud-server

Unable to make nodejs work in background by "&"

3 Answers3