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- #!/bin/sh
- ### BEGIN INIT INFO
- # Provides: nginx
- # Required-Start: $local_fs $remote_fs $network $syslog $named
- # Required-Stop: $local_fs $remote_fs $network $syslog $named
- # Default-Start: 2 3 4 5
- # Default-Stop: 0 1 6
- # Short-Description: starts the nginx web server
- # Description: starts nginx using start-stop-daemon
- ### END INIT INFO
- PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
- DAEMON=/usr/sbin/nginx
- NAME=nginx
- DESC=nginx
- # Include nginx defaults if available
- if [ -r /etc/default/nginx ]; then
- . /etc/default/nginx
- fi
- STOP_SCHEDULE="${STOP_SCHEDULE:-QUIT/5/TERM/5/KILL/5}"
- test -x $DAEMON || exit 0
- . /lib/init/vars.sh
- . /lib/lsb/init-functions
- # Try to extract nginx pidfile
- PID=$(cat /etc/nginx/nginx.conf | grep -Ev '^\s*#' | awk 'BEGIN { RS="[;{}]" } { if ($1 == "pid") print $2 }' | head -n1)
- if [ -z "$PID" ]; then
- PID=/run/nginx.pid
- fi
- if [ -n "$ULIMIT" ]; then
- # Set ulimit if it is set in /etc/default/nginx
- ulimit $ULIMIT
- fi
- start_nginx() {
- # Start the daemon/service
- #
- # Returns:
- # 0 if daemon has been started
- # 1 if daemon was already running
- # 2 if daemon could not be started
- start-stop-daemon --start --quiet --pidfile $PID --exec $DAEMON --test > /dev/null \
- || return 1
- start-stop-daemon --start --quiet --pidfile $PID --exec $DAEMON -- \
- $DAEMON_OPTS 2>/dev/null \
- || return 2
- }
- test_config() {
- # Test the nginx configuration
- $DAEMON -t $DAEMON_OPTS >/dev/null 2>&1
- }
- stop_nginx() {
- # Stops the daemon/service
- #
- # Return
- # 0 if daemon has been stopped
- # 1 if daemon was already stopped
- # 2 if daemon could not be stopped
- # other if a failure occurred
- start-stop-daemon --stop --quiet --retry=$STOP_SCHEDULE --pidfile $PID --name $NAME
- RETVAL="$?"
- sleep 1
- return "$RETVAL"
- }
- reload_nginx() {
- # Function that sends a SIGHUP to the daemon/service
- start-stop-daemon --stop --signal HUP --quiet --pidfile $PID --name $NAME
- return 0
- }
- rotate_logs() {
- # Rotate log files
- start-stop-daemon --stop --signal USR1 --quiet --pidfile $PID --name $NAME
- return 0
- }
- upgrade_nginx() {
- # Online upgrade nginx executable
- # http://nginx.org/en/docs/control.html
- #
- # Return
- # 0 if nginx has been successfully upgraded
- # 1 if nginx is not running
- # 2 if the pid files were not created on time
- # 3 if the old master could not be killed
- if start-stop-daemon --stop --signal USR2 --quiet --pidfile $PID --name $NAME; then
- # Wait for both old and new master to write their pid file
- while [ ! -s "${PID}.oldbin" ] || [ ! -s "${PID}" ]; do
- cnt=`expr $cnt + 1`
- if [ $cnt -gt 10 ]; then
- return 2
- fi
- sleep 1
- done
- # Everything is ready, gracefully stop the old master
- if start-stop-daemon --stop --signal QUIT --quiet --pidfile "${PID}.oldbin" --name $NAME; then
- return 0
- else
- return 3
- fi
- else
- return 1
- fi
- }
- case "$1" in
- start)
- log_daemon_msg "Starting $DESC" "$NAME"
- start_nginx
- case "$?" in
- 0|1) log_end_msg 0 ;;
- 2) log_end_msg 1 ;;
- esac
- ;;
- stop)
- log_daemon_msg "Stopping $DESC" "$NAME"
- stop_nginx
- case "$?" in
- 0|1) log_end_msg 0 ;;
- 2) log_end_msg 1 ;;
- esac
- ;;
- restart)
- log_daemon_msg "Restarting $DESC" "$NAME"
- # Check configuration before stopping nginx
- if ! test_config; then
- log_end_msg 1 # Configuration error
- exit $?
- fi
- stop_nginx
- case "$?" in
- 0|1)
- start_nginx
- case "$?" in
- 0) log_end_msg 0 ;;
- 1) log_end_msg 1 ;; # Old process is still running
- *) log_end_msg 1 ;; # Failed to start
- esac
- ;;
- *)
- # Failed to stop
- log_end_msg 1
- ;;
- esac
- ;;
- reload|force-reload)
- log_daemon_msg "Reloading $DESC configuration" "$NAME"
- # Check configuration before stopping nginx
- #
- # This is not entirely correct since the on-disk nginx binary
- # may differ from the in-memory one, but that's not common.
- # We prefer to check the configuration and return an error
- # to the administrator.
- if ! test_config; then
- log_end_msg 1 # Configuration error
- exit $?
- fi
- reload_nginx
- log_end_msg $?
- ;;
- configtest|testconfig)
- log_daemon_msg "Testing $DESC configuration"
- test_config
- log_end_msg $?
- ;;
- status)
- status_of_proc -p $PID "$DAEMON" "$NAME" && exit 0 || exit $?
- ;;
- upgrade)
- log_daemon_msg "Upgrading binary" "$NAME"
- upgrade_nginx
- log_end_msg $?
- ;;
- rotate)
- log_daemon_msg "Re-opening $DESC log files" "$NAME"
- rotate_logs
- log_end_msg $?
- ;;
- *)
- echo "Usage: $NAME {start|stop|restart|reload|force-reload|status|configtest|rotate|upgrade}" >&2
- exit 3
- ;;
- esac
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