nginx.init

   1 #!/bin/sh
   2 #
   3 # nginx Nginx Web Server (@type@ version)
   4 #
   5 # chkconfig:    345 85 15
   6 # description:  Nginx is an HTTP(S) server, HTTP(S) reverse \
   7 #               proxy and IMAP/POP3 proxy server
   8 # processname:  nginx
   9 # pidfile:      /var/run/nginx.pid
  10 # config:       /etc/nginx/nginx.conf
  11
  12 # Source function library
  13 . /etc/rc.d/init.d/functions
  14
  15 # Source networking configuration.
  16 . /etc/sysconfig/network
  17
  18 nginx="/usr/sbin/nginx"
  19 svname="nginx"
  20 prog=${nginx##*/}
  21
  22 sysconfig="/etc/sysconfig/$prog"
  23 lockfile="/var/lock/subsys/$prog"
  24 pidfile="/var/run/$prog.pid"
  25
  26 NGINX_CONF_FILE="/etc/nginx/$prog.conf"
  27
  28 # Get service config
  29 [ -f $sysconfig ] && . $sysconfig
  30
  31 # Check that networking is up.
  32 if is_yes "${NETWORKING}"; then
  33         if [ ! -f /var/lock/subsys/network -a "$1" != stop -a "$1" != status ]; then
  34                 msg_network_down "$svname"
  35                 exit 1
  36         fi
  37 else
  38         exit 0
  39 fi
  40
  41 # configtest itself
  42 # must return non-zero if check failed
  43 # output is discarded if checkconfig is ran without details
  44 configtest() {
  45         $nginx -t -c $NGINX_CONF_FILE
  46 }
  47
  48 # wrapper for configtest
  49 checkconfig() {
  50         local details=${1:-0}
  51
  52         if [ $details = 1 ]; then
  53                 # run config test and display report (status action)
  54                 show "Checking %s configuration" "$svname"; busy
  55                 local out
  56                 out=$(configtest 2>&1)
  57                 RETVAL=$?
  58                 if [ $RETVAL = 0 ]; then
  59                         ok
  60                 else
  61                         fail
  62                 fi
  63                 [ "$out" ] && echo >&2 "$out"
  64         else
  65                 # run config test and abort with nice message if failed
  66                 # (for actions checking status before action).
  67                 configtest >/dev/null 2>&1
  68                 RETVAL=$?
  69                 if [ $RETVAL != 0 ]; then
  70                         show "Checking %s configuration" "$svname"; fail
  71                         nls 'Configuration test failed. See details with %s "checkconfig"' $0
  72                         exit $RETVAL
  73                 fi
  74         fi
  75 }
  76
  77 start() {
  78         # Check if the service is already running?
  79         if [ ! -f $lockfile ]; then
  80                 checkconfig
  81                 msg_starting "$svname"
  82                 daemon $nginx -c $NGINX_CONF_FILE
  83                 RETVAL=$?
  84                 [ $RETVAL -eq 0 ] && touch $lockfile
  85         else
  86                 msg_already_running "$svname"
  87         fi
  88 }
  89
  90 stop() {
  91         # Stop daemons.
  92         if [ -f $lockfile ]; then
  93                 msg_stopping "$svname"
  94                 killproc -p $pidfile $prog
  95                 RETVAL=$?
  96                 rm -f $lockfile $pidfile >/dev/null 2>&1
  97         else
  98                 msg_not_running "$svname"
  99         fi
 100 }
 101
 102 reload() {
 103         if [ -f $lockfile ]; then
 104                 checkconfig
 105                 msg_reloading "$svname"
 106                 killproc -p $pidfile $prog -HUP
 107                 RETVAL=$?
 108         else
 109                 msg_not_running "$svname"
 110                 RETVAL=7
 111         fi
 112 }
 113
 114 condrestart() {
 115         if [ ! -f $lockfile ]; then
 116                 msg_not_running "$svname"
 117                 RETVAL=$1
 118                 return
 119         fi
 120
 121         checkconfig
 122         stop
 123         start
 124 }
 125
 126 # Upgrade the binary with no downtime.
 127 # http://nginx.org/en/docs/control.html#upgrade
 128 # TODO: handle revert back on failed upgrade
 129 upgrade() {
 130         local oldbin_pidfile="${pidfile}.oldbin"
 131
 132         checkconfig
 133         show "Upgrading $svname"
 134         killproc -p $pidfile $prog -USR2
 135         RETVAL=$?
 136         sleep 1
 137         if [ -f $oldbin_pidfile ] && [ -f $pidfile ]; then
 138                 show "Upgrade: stopping old process"
 139                 killproc -p $oldbin_pidfile $prog -QUIT
 140                 return 0
 141         else
 142                 return 1
 143         fi
 144 }
 145
 146 # Tell nginx to reopen logs
 147 # http://nginx.org/en/docs/control.html#logs
 148 reopen_logs() {
 149         show "Reopening $svname logs"
 150         killproc -p $pidfile $prog -USR1
 151 }
 152
 153 RETVAL=0
 154 # See how we were called.
 155 case "$1" in
 156   start)
 157         start
 158         ;;
 159   stop)
 160         stop
 161         ;;
 162   restart)
 163         checkconfig
 164         stop
 165         start
 166         ;;
 167   try-restart)
 168         condrestart 0
 169         ;;
 170   reload|graceful)
 171         reload
 172         ;;
 173   force-reload|upgrade)
 174         upgrade
 175         ;;
 176   reopen-logs)
 177         reopen_logs
 178         ;;
 179   checkconfig|configtest)
 180         checkconfig 1
 181         ;;
 182   status)
 183         status --pidfile $pidfile $prog
 184         RETVAL=$?
 185         ;;
 186   *)
 187         msg_usage "$0 {start|stop|restart|try-restart|reload|force-reload|graceful|reopen-logs|checkconfig|status}"
 188         exit 3
 189         ;;
 190 esac
 191
 192 exit $RETVAL