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 action="$1"
  12 set -u
  13
  14 test -f "$INIT_CONF" && . $INIT_CONF
  15
  16 old_pid="$PID.oldbin"
  17
  18 cd $APP_ROOT || exit 1
  19
  20 sig () {
  21         test -s "$PID" && kill -$1 `cat $PID`
  22 }
  23
  24 oldsig () {
  25         test -s $old_pid && kill -$1 `cat $old_pid`
  26 }
  27
  28 case $action in
  29 start)
  30         sig 0 && echo >&2 "Already running" && exit 0
  31         $CMD
  32         ;;
  33 stop)
  34         sig QUIT && exit 0
  35         echo >&2 "Not running"
  36         ;;
  37 force-stop)
  38         sig TERM && exit 0
  39         echo >&2 "Not running"
  40         ;;
  41 restart|reload)
  42         sig HUP && echo reloaded OK && exit 0
  43         echo >&2 "Couldn't reload, starting '$CMD' instead"
  44         $CMD
  45         ;;
  46 upgrade)
  47         sig USR2 && sleep 2 && sig 0 && oldsig QUIT && exit 0
  48         echo >&2 "Couldn't upgrade, starting '$CMD' instead"
  49         $CMD
  50         ;;
  51 reopen-logs)
  52         sig USR1
  53         ;;
  54 *)
  55         echo >&2 "Usage: $0 <start|stop|restart|upgrade|force-stop|reopen-logs>"
  56         exit 1
  57         ;;
  58 esac