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Puma example init script. It assumes .ruby_version exist in the APP_PATH and either rbenv or rvm is used.
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#!/lib/init/init-d-script | |
### BEGIN INIT INFO | |
# Provides: my-script-name | |
# Required-Start: $local_fs | |
# Required-Stop: $local_fs | |
# Default-Start: 2 3 4 5 | |
# Default-Stop: 0 1 6 | |
# Description: Run my app on Puma | |
### END INIT INFO | |
DESC="My app description" | |
NAME="my-script-name" | |
APP_PATH=/path/to/app | |
DAEMON=/bin/bash | |
PIDFILE=$APP_PATH/puma.pid | |
DAEMON_USER=app_account | |
[ $(id -u) = 0 ] && START_ARGS="-c $DAEMON_USER:$DAEMON_USER" | |
status_cmd() { | |
[ -f $PIDFILE ] && kill -0 `cat $PIDFILE` 2>/dev/null | |
} | |
do_start_prepare() { | |
status_cmd && exit 0 | |
} | |
do_stop_prepare() { | |
status_cmd || exit 0 | |
} | |
do_start_cmd_override() { | |
echo | |
start-stop-daemon --start --quiet --pidfile $PIDFILE \ | |
$START_ARGS --startas $DAEMON --name $NAME --exec $DAEMON -- -l -c \ | |
"cd $APP_PATH && bundle exec puma -b tcp://0.0.0.0:3000 --pidfile $PIDFILE -d -e production" \ | |
|| return 2 | |
} | |
# This is required if you want service x start to exit with error if it didn't succeeded. Otherwise "FAILED" would be shown | |
# but the exit code would be 0 and capistrano wouldn't notice the failure for example. | |
# The difference from the original do_start is that we call "exit 2" in the "case 2)" condition. | |
do_start_override() { | |
[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME" | |
call do_start_cmd | |
case "$?" in | |
0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; | |
2) [ "$VERBOSE" != no ] && log_end_msg 1; exit 2 ;; | |
esac | |
} | |
do_stop_cmd_override() { | |
start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE | |
} | |
do_status_override() { | |
if status_cmd; then | |
log_success_msg running | |
exit 0 | |
else | |
log_failure_msg not running | |
exit 2 | |
fi | |
} | |
# perform a hot restart if the application is running. | |
# warning: sometimes the hot restart will fail and the application will exit (case the Gemfile has changed for instance). | |
# This is still not handled by this init script. We should probably wait a bit and see if the process is still alive and | |
# call start if it isn't. | |
do_restart_override() { | |
status_cmd && kill -USR2 `cat $PIDFILE` || call do_start | |
} |
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