| #!/bin/sh |
| # ***************************************************************************** |
| # |
| # Copyright (c) 2016, EPAM SYSTEMS INC |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| # ****************************************************************************** |
| |
| ### 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 |