Question

Automatically launch bash script on droplet creation?

  • Posted May 13, 2014

Basically, I have an image with a flask server.

When I create a new droplet from it, the flask server doesn’t run. It needs to be manually run.

How can I make the bash script to run python server.py as soon as the droplet is ready instead of me having to manually ssh in or run fabric?

Subscribe
Share

Submit an answer
You can type!ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

@asb : stop on runlevel [!12345] --> is that mean any runlevel except {1, 2, 3, 4, 5}

The best way to have something run on boot is use an init script. Assuming you are using Ubuntu, you can use Upstart to write it in a simple declarative format. A quick example might look like: <br> <br><pre> <br>description “Daemon for flask project” <br> <br>start on (local-filesystems and net-device-up IFACE=eth0) <br>stop on runlevel [!12345] <br> <br># If the process quits unexpectedly trigger a respawn <br>respawn <br> <br>setuid myuser <br>setgid mygroup <br>chdir /path/to/dir <br> <br>exec uwsgi --master
<br> --processes 4
<br> --die-on-term
<br> --socket /tmp/uwsgi.sock <br></pre> <br> <br>Save the file to “/etc/init/myservice.conf” It will now launch on boot once the filesystem is mounted and the network is active. You can also manage it like other services, using: <br> <br><pre> <br>service myservice start <br>service myservice restart <br>service myservice stop <br></pre>