Starting on system startup and respawning apps with upstart in ubuntu

Configuring

Following is an example config file for starting app on system startup and auto-respawning.
File name should be put in /etc/init, its name should end with .conf

The name of the task is derived from file name. For file name taskName.conf, the task is called taskName.

start on runlevel [2345]

#!upstart
description "your app description"

# Start a job as username, a member of usergroup
setuid username
setgid usergroup

# set required environments (what you normally do with export VARIABLE=VALUE)
env ENV_TO_SET = environment\ value

# run the app
exec /home/myuser/bin/myapp

# Restart the process if it dies with a signal
# or exit code not given by the 'normal exit' stanza.
respawn

# Give up if restart occurs 10 times in 90 seconds.
respawn limit 10 90

Running

To start a task run:

$ sudo start taskName

And to stop it:

$ sudo stop taskName

More info: http://upstart.ubuntu.com/cookbook/

Notes

When you get some strange errors reading files, you might need to add an env which defines locale, e.g.:

env LC_ALL=pl_PL.UTF-8

For running java apps, remember to specify JAVA_HOME

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