Nginx自启动脚本(ubuntu 安装版)

#! /bin/sh
### BEGIN INIT INFO
# Provides:          nginx
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: nginx init.d dash script for Ubuntu or other *nix.
# Description:       nginx init.d dash script for Ubuntu or other *nix.
### END INIT INFO
#------------------------------------------------------------------------------
# nginx - this Debian Almquist shell (dash) script, starts and stops the nginx
#         daemon for Ubuntu and other *nix releases.
#
# description:  Nginx is an HTTP(S) server, HTTP(S) reverse \
#               proxy and IMAP/POP3 proxy server.  This \
#               script will manage the initiation of the \
#               server and it's process state.
#
# processname: nginx
# config:      /usr/local/nginx/conf/nginx.conf
# pidfile:     /usr/local/nginx/logs/nginx.pid
# Provides:    nginx
#
# Author:  Jason Giedymin
#          <jason.giedymin AT gmail.com>.
#
# Version: 3.5.1 11-NOV-2013 jason.giedymin AT gmail.com
# Notes: nginx init.d dash script for Ubuntu.
# Tested with: Ubuntu 13.10, nginx-1.4.3
#
# This script's project home is:
#   http://github.com/JasonGiedymin/nginx-init-ubuntu #
#------------------------------------------------------------------------------
#                               MIT X11 License
#------------------------------------------------------------------------------
#
# Copyright (c) 2008-2013 Jason Giedymin, http://jasongiedymin.com #
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#------------------------------------------------------------------------------

#------------------------------------------------------------------------------
#                               Functions
#------------------------------------------------------------------------------
LSB_FUNC=/lib/lsb/init-functions

# Test that init functions exists
test -r $LSB_FUNC || {
echo "$0: Cannot find $LSB_FUNC! Script exiting." 1>&2
exit 5
}

. $LSB_FUNC

#------------------------------------------------------------------------------
#                               Consts
#------------------------------------------------------------------------------
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/local/nginx/sbin/nginx

PS="nginx"
PIDNAME="nginx"                     #lets you do $PS-slave
PIDFILE=$PIDNAME.pid                #pid file
PIDSPATH=/usr/local/nginx/logs      #default pid location, you should change it

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="/usr/local/nginx/conf/nginx.conf"

#------------------------------------------------------------------------------
#                               Simple Tests
#------------------------------------------------------------------------------

# Test if nginx is a file and executable
test -x $DAEMON || {
echo "$0: You don't have permissions to execute nginx." 1>&2
exit 4
}

# Include nginx defaults if available
if [ -f /etc/default/nginx ]; then
. /etc/default/nginx
fi

#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

try=`expr $try + 1`
sleep 1
done
}

status(){
isRunning
isAlive=$?

if [ "${isAlive}" -eq $TRUE ]; then
log_warning_msg "$DESCRIPTION found running with processes:  `pidof $PS`"
rc=0
else
log_warning_msg "$DESCRIPTION is NOT running."
rc=3
fi

return
}

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
rc=0
else
start-stop-daemon --start --quiet --chuid \
$RUNAS --pidfile $PIDSPATH/$PIDFILE --exec $DAEMON \
-- -c $NGINX_CONF_FILE
setFilePerms
log_end_msg $SCRIPT_OK
rc=0
fi

return
}

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
rc=0 # lsb states 1, but under status it is 2 (which is more prescriptive). Deferring to standard.
else
removePIDFile
log_end_msg $SCRIPT_OK
rc=0
fi
else
log_end_msg $SCRIPT_ERROR
rc=7
fi

return
}

reload() {
configtest || return $?

log_daemon_msg "Reloading (via HUP) $DESCRIPTION"

isRunning

if [ $? -eq $TRUE ]; then
kill -HUP `cat $PIDSPATH/$PIDFILE`
log_end_msg $SCRIPT_OK
rc=0
else
log_end_msg $SCRIPT_ERROR
rc=7
fi

return
}

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
rc=0
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
rc=0
fi
else
log_end_msg $SCRIPT_ERROR
rc=7
fi

return
}

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
rc=0
}

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
rc=0
}

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
}

action="$1"
case "$1" in
start)
start
;;
stop)
stop
;;
restart|force-reload)
stop
# if [ $rc -ne 0 ]; then
#     script_exit
# fi
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 3
;;
esac

exit $rc