examples/init.sh

   1 #!/bin/sh
   2 set -e
   3 # Example init script, this can be used with nginx, too,
   4 # since nginx and unicorn accept the same signals
   5
   6 # Feel free to change any of the following variables for your app:
   7 APP_ROOT=/home/x/my_app/current
   8 PID=$APP_ROOT/tmp/pids/unicorn.pid
   9 CMD="/usr/bin/unicorn -D -c $APP_ROOT/config/unicorn.rb"
  10 INIT_CONF=$APP_ROOT/config/init.conf
  11
  12 test -f "$INIT_CONF" && . $INIT_CONF
  13
  14 old_pid="$PID.oldbin"
  15
  16 cd $APP_ROOT || exit 1
  17
  18 sig () {
  19         test -s "$PID" && kill -$1 `cat $PID`
  20 }
  21
  22 oldsig () {
  23         test -s $old_pid && kill -$1 `cat $old_pid`
  24 }
  25
  26 case $1 in
  27 start)
  28         sig 0 && echo >&2 "Already running" && exit 0
  29         $CMD
  30         ;;
  31 stop)
  32         sig QUIT && exit 0
  33         echo >&2 "Not running"
  34         ;;
  35 force-stop)
  36         sig TERM && exit 0
  37         echo >&2 "Not running"
  38         ;;
  39 restart|reload)
  40         sig HUP && echo reloaded OK && exit 0
  41         echo >&2 "Couldn't reload, starting '$CMD' instead"
  42         $CMD
  43         ;;
  44 upgrade)
  45         sig USR2 && sleep 2 && sig 0 && oldsig QUIT && exit 0
  46         echo >&2 "Couldn't upgrade, starting '$CMD' instead"
  47         $CMD
  48         ;;
  49 *)
  50         echo >&2 "Usage: $0 <start|stop|restart|upgrade|force-stop>"
  51         exit 1
  52         ;;
  53 esac