Arquivo de inicialização do nginx

nginx

#! /bin/sh
. /lib/lsb/init-functions
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/sbin/nginx
 
PS="nginx"
PIDNAME="nginx"       #lets you do $PS-slave
PIDFILE=$PIDNAME.pid                    #pid file
PIDSPATH=/var/run
 
DESCRIPTION="Nginx Server..."
 
RUNAS=root                              #user to run as
 
SCRIPT_OK=0                             #ala error codes
SCRIPT_ERROR=1                          #ala error codes
TRUE=1                                  #boolean
FALSE=0                                 #boolean
 
lockfile=/var/lock/subsys/nginx
NGINX_CONF_FILE="/etc/nginx/nginx.conf"
 
#------------------------------------------------------------------------------
#                               Simple Tests
#------------------------------------------------------------------------------
 
#test if nginx is a file and executable
test -x $DAEMON || exit 0
 
#set exit condition
#set -e
 
#------------------------------------------------------------------------------
#                               Functions
#------------------------------------------------------------------------------
 
setFilePerms(){
 
        if [ -f $PIDSPATH/$PIDFILE ]; then
                chmod 400 $PIDSPATH/$PIDFILE
        fi
}
 
configtest() {
  $DAEMON -t -c $NGINX_CONF_FILE
}
 
getPSCount() {
  return `pgrep -f $PS | wc -l`
}
 
isRunning() {
        if [ $1 ]; then
                pidof_daemon $1
                PID=$?
 
                if [ $PID -gt 0 ]; then
                        return 1
                else
                        return 0
                fi
        else
                pidof_daemon
                PID=$?
 
                if [ $PID -gt 0 ]; then
                        return 1
                else
                        return 0
                fi
        fi
}
 
#courtesy of php-fpm
wait_for_pid () {
        try=0
 
        while test $try -lt 35 ; do
 
                case "$1" in
                        'created')
                        if [ -f "$2" ] ; then
                                try=''
                                break
                        fi
                        ;;
 
                        'removed')
                        if [ ! -f "$2" ] ; then
                                try=''
                                break
                        fi
                        ;;
                esac
 
                #echo -n .
                try=`expr $try + 1`
                sleep 1
        done
}
 
status(){
  isRunning
  isAlive=$?
 
  if [ "${isAlive}" -eq $TRUE ]; then
                echo "$PIDNAME found running with processes:  `pidof $PS`"
        else
                echo "$PIDNAME is NOT running."
        fi
 
 
}
 
removePIDFile(){
  if [ $1 ]; then
                if [ -f $1 ]; then
                  rm -f $1
          fi
        else
    #Do default removal
    if [ -f $PIDSPATH/$PIDFILE ]; then
                  rm -f $PIDSPATH/$PIDFILE
          fi
        fi
}
 
start() {
        log_daemon_msg "Starting $DESCRIPTION"
 
  isRunning
  isAlive=$?
 
        if [ "${isAlive}" -eq $TRUE ]; then
                log_end_msg $SCRIPT_ERROR
        else
                start-stop-daemon --start --quiet --chuid $RUNAS --pidfile $PIDSPATH/$PIDFILE --exec $DAEMON \
                -- -c $NGINX_CONF_FILE
                setFilePerms
                log_end_msg $SCRIPT_OK
        fi
}
 
stop() {
  log_daemon_msg "Stopping $DESCRIPTION"
 
  isRunning
  isAlive=$?
        if [ "${isAlive}" -eq $TRUE ]; then
                start-stop-daemon --stop --quiet --pidfile $PIDSPATH/$PIDFILE
 
    wait_for_pid 'removed' $PIDSPATH/$PIDFILE
 
                if [ -n "$try" ] ; then
                        log_end_msg $SCRIPT_ERROR
                else
                        removePIDFile
                  log_end_msg $SCRIPT_OK
                fi
 
        else
                log_end_msg $SCRIPT_ERROR
        fi
}
 
reload() {
  configtest || return $?
 
  log_daemon_msg "Reloading (via HUP) $DESCRIPTION"
 
        isRunning
        if [ $? -eq $TRUE ]; then
    `killall -HUP $PS` #to be safe
 
                log_end_msg $SCRIPT_OK
        else
                log_end_msg $SCRIPT_ERROR
        fi
}
 
quietupgrade() {
  log_daemon_msg "Peforming Quiet Upgrade $DESCRIPTION"
 
        isRunning
        isAlive=$?
        if [ "${isAlive}" -eq $TRUE ]; then
    kill -USR2 `cat $PIDSPATH/$PIDFILE`
    kill -WINCH `cat $PIDSPATH/$PIDFILE.oldbin`
 
    isRunning
    isAlive=$?
    if [ "${isAlive}" -eq $TRUE ]; then
      kill -QUIT `cat $PIDSPATH/$PIDFILE.oldbin`
      wait_for_pid 'removed' $PIDSPATH/$PIDFILE.oldbin
                        removePIDFile $PIDSPATH/$PIDFILE.oldbin
 
      log_end_msg $SCRIPT_OK
    else
      log_end_msg $SCRIPT_ERROR
 
      log_daemon_msg "ERROR! Reverting back to original $DESCRIPTION"
 
      kill -HUP `cat $PIDSPATH/$PIDFILE`
      kill -TERM `cat $PIDSPATH/$PIDFILE.oldbin`
      kill -QUIT `cat $PIDSPATH/$PIDFILE.oldbin`
 
      wait_for_pid 'removed' $PIDSPATH/$PIDFILE.oldbin
                        removePIDFile $PIDSPATH/$PIDFILE.oldbin
 
      log_end_msg $SCRIPT_ok
    fi
        else
                log_end_msg $SCRIPT_ERROR
        fi
}
 
terminate() {
        log_daemon_msg "Force terminating (via KILL) $DESCRIPTION"
 
  PIDS=`pidof $PS` || true
 
  [ -e $PIDSPATH/$PIDFILE ] && PIDS2=`cat $PIDSPATH/$PIDFILE`
 
  for i in $PIDS; do
    if [ "$i" = "$PIDS2" ]; then
            kill $i
                        wait_for_pid 'removed' $PIDSPATH/$PIDFILE
      removePIDFile
    fi
  done
 
  log_end_msg $SCRIPT_OK
}
 
destroy() {
  log_daemon_msg "Force terminating and may include self (via KILLALL) $DESCRIPTION"
  killall $PS -q >> /dev/null 2>&1
  log_end_msg $SCRIPT_OK
}
 
pidof_daemon() {
    PIDS=`pidof $PS` || true
 
    [ -e $PIDSPATH/$PIDFILE ] && PIDS2=`cat $PIDSPATH/$PIDFILE`
 
    for i in $PIDS; do
        if [ "$i" = "$PIDS2" ]; then
            return 1
        fi
    done
    return 0
}
 
case "$1" in
  start)
  start
        ;;
  stop)
  stop
        ;;
  restart|force-reload)
  stop
  sleep 1
  start
        ;;
  reload)
  $1
  ;;
  status)
  status
  ;;
  configtest)
        $1
        ;;
  quietupgrade)
  $1
  ;;
  terminate)
  $1
  ;;
  destroy)
  $1
  ;;
  *)
  FULLPATH=/etc/init.d/$PS
  echo "Usage: $FULLPATH {start|stop|restart|force-reload|status|configtest|quietupgrade|terminate|destroy}"
  echo "       The 'destroy' command should only be used as a last resort." 
  exit 1
  ;;
esac
 
exit 0