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         local oldbin_pidfile="${pidfile}.oldbin"
  92
  93         # Stop daemons.
  94         if [ -f $lockfile ]; then
  95                 if [ -f $oldbin_pidfile ] && [ -f $pidfile ]; then
  96                         msg_stopping "$svname (old process)"
  97                         killproc -p $oldbin_pidfile $prog -TERM
  98                 fi
  99                 msg_stopping "$svname"
 100                 killproc -p $pidfile $prog
 101                 RETVAL=$?
 102                 rm -f $lockfile $pidfile >/dev/null 2>&1
 103         else
 104                 msg_not_running "$svname"
 105         fi
 106 }
 107
 108 reload() {
 109         if [ -f $lockfile ]; then
 110                 checkconfig
 111                 msg_reloading "$svname"
 112                 killproc -p $pidfile $prog -HUP
 113                 RETVAL=$?
 114         else
 115                 msg_not_running "$svname"
 116                 RETVAL=7
 117         fi
 118 }
 119
 120 condrestart() {
 121         if [ ! -f $lockfile ]; then
 122                 msg_not_running "$svname"
 123                 RETVAL=$1
 124                 return
 125         fi
 126
 127         checkconfig
 128         stop
 129         start
 130 }
 131
 132 # Upgrade the binary with no downtime.
 133 # http://nginx.org/en/docs/control.html#upgrade
 134 # TODO: handle revert back on failed upgrade
 135 upgrade() {
 136         local oldbin_pidfile="${pidfile}.oldbin" retry
 137
 138         checkconfig
 139         show "Upgrading $svname"
 140         killproc -p $pidfile $prog -USR2
 141         RETVAL=$?
 142
 143         # wait for 15s
 144         retry=60
 145         while [ $retry -gt 0 ]; do
 146                 if [ -f $oldbin_pidfile ] && [ -f $pidfile ]; then
 147                         show "Upgrade: stopping old process"
 148                         killproc -p $oldbin_pidfile $prog -QUIT
 149                         return 0
 150                 else
 151                         usleep 250000
 152                         retry=$(($retry -1))
 153                 fi
 154         done
 155
 156         show "Upgrade: stopping old process"; fail
 157         nls 'old process pid file was not found'
 158         return 1
 159 }
 160
 161 # Tell nginx to reopen logs
 162 # http://nginx.org/en/docs/control.html#logs
 163 reopen_logs() {
 164         local oldbin_pidfile="${pidfile}.oldbin"
 165
 166         if [ -f $oldbin_pidfile ]; then
 167                 show "Reopening $svname (oldbin) logs"
 168                 killproc -p $oldbin_pidfile $prog -USR1
 169         fi
 170
 171         show "Reopening $svname logs"
 172         killproc -p $pidfile $prog -USR1
 173 }
 174
 175 RETVAL=0
 176 # See how we were called.
 177 case "$1" in
 178   start)
 179         start
 180         ;;
 181   stop)
 182         stop
 183         ;;
 184   restart)
 185         checkconfig
 186         stop
 187         start
 188         ;;
 189   try-restart)
 190         condrestart 0
 191         ;;
 192   reload|graceful)
 193         reload
 194         ;;
 195   force-reload|upgrade)
 196         upgrade
 197         ;;
 198   reopen-logs)
 199         reopen_logs
 200         ;;
 201   checkconfig|configtest)
 202         checkconfig 1
 203         ;;
 204   status)
 205         status --pidfile $pidfile $prog
 206         RETVAL=$?
 207         ;;
 208   *)
 209         msg_usage "$0 {start|stop|restart|try-restart|reload|force-reload|graceful|reopen-logs|checkconfig|status}"
 210         exit 3
 211         ;;
 212 esac
 213
 214 exit $RETVAL