diff --git a/nginx/nginx-init b/nginx/nginx-init new file mode 100755 index 000000000..7feb3e57d --- /dev/null +++ b/nginx/nginx-init @@ -0,0 +1,209 @@ +#!/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 + +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 + +# Check if the ULIMIT is set in /etc/default/nginx +if [ -n "$ULIMIT" ]; then + # Set the ulimits + ulimit $ULIMIT +fi + +# +# Function that starts the daemon/service +# +do_start() +{ + # Return + # 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_nginx_config() { + $DAEMON -t $DAEMON_OPTS >/dev/null 2>&1 +} + +# +# Function that stops the daemon/service +# +do_stop() +{ + # 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=TERM/30/KILL/5 --pidfile $PID --name $NAME + RETVAL="$?" + + sleep 1 + return "$RETVAL" +} + +# +# Function that sends a SIGHUP to the daemon/service +# +do_reload() { + start-stop-daemon --stop --signal HUP --quiet --pidfile $PID --name $NAME + return 0 +} + +# +# Rotate log files +# +do_rotate() { + start-stop-daemon --stop --signal USR1 --quiet --pidfile $PID --name $NAME + return 0 +} + +# +# Online upgrade nginx executable +# +# "Upgrading Executable on the Fly" +# http://nginx.org/en/docs/control.html +# +do_upgrade() { + # 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 "$1" in + start) + [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME" + do_start + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + stop) + [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME" + do_stop + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + restart) + log_daemon_msg "Restarting $DESC" "$NAME" + + # Check configuration before stopping nginx + if ! test_nginx_config; then + log_end_msg 1 # Configuration error + exit 0 + fi + + do_stop + case "$?" in + 0|1) + do_start + case "$?" 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 reload 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_nginx_config; then + log_end_msg 1 # Configuration error + exit 0 + fi + + do_reload + log_end_msg $? + ;; + configtest|testconfig) + log_daemon_msg "Testing $DESC configuration" + test_nginx_config + log_end_msg $? + ;; + status) + status_of_proc -p $PID "$DAEMON" "$NAME" && exit 0 || exit $? + ;; + upgrade) + log_daemon_msg "Upgrading binary" "$NAME" + do_upgrade + log_end_msg 0 + ;; + rotate) + log_daemon_msg "Re-opening $DESC log files" "$NAME" + do_rotate + log_end_msg $? + ;; + *) + echo "Usage: $NAME {start|stop|restart|reload|force-reload|status|configtest|rotate|upgrade}" >&2 + exit 3 + ;; +esac + +: