方案1：设置nginx开机自启动（CentOS）：
创建nginx启动命令脚本 /etc/init.d/nginx ：
参考：https://www.cnblogs.com/whatmiss/p/7091220.html
参考：https://www.nginx.com/resources/wiki/start/topics/examples/redhatnginxinit/
参考：https://www.cnblogs.com/mswangblog/p/6628161.html
注意修改以下两项配置：
nginx=”/usr/local/nginx/sbin/nginx”
NGINX_CONF_FILE=”/usr/local/nginx/conf/nginx.conf”
#! /bin/bash
# chkconfig: - 85 15
PATH=/usr/local/nginx
DESC="nginx daemon"
NAME=nginx
DAEMON=$PATH/sbin/$NAME
CONFIGFILE=$PATH/conf/$NAME.conf
PIDFILE=$PATH/logs/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME
set -e
[ -x "$DAEMON" ] || exit 0
do_start() {
$DAEMON -c $CONFIGFILE || echo -n "nginx already running"
}
do_stop() {
$DAEMON -s stop || echo -n "nginx not running"
}
do_reload() {
$DAEMON -s reload || echo -n "nginx can't reload"
}
case "$1" in
start)
echo -n "Starting $DESC: $NAME"
do_start
echo "."
;;
stop)
echo -n "Stopping $DESC: $NAME"
do_stop
echo "."
;;
reload|graceful)
echo -n "Reloading $DESC configuration..."
do_reload
echo "."
;;
restart)
echo -n "Restarting $DESC: $NAME"
do_stop
do_start
echo "."
;;
*)
echo "Usage: $SCRIPTNAME {start|stop|reload|restart}" >&2
exit 3
;;
esac
exit 0
参考：https://blog.csdn.net/Fenglin6165/article/details/86479383
Nginx服务设置：dos2unix 转换/设置执行权限/注册成服务/设置开机启动
dos2unix /etc/init.d/nginx && chmod a+x /etc/init.d/nginx && chkconfig --add nginx && chkconfig nginx on
方案2：设置nginx开机自启动（Ubuntu）：
参考：https://blog.csdn.net/Fenglin6165/article/details/86479383
因为发现服务器没有设置Nginx开机自启动，就网上搜了一下，找了个启动脚本，设置一下。
正文
Ubuntu/Linux系统开机自启动，很简单，在/etc/init.d/目录下编写一个服务脚本(比如nginx)，然后在/etc/init.d/rc.local中添加一行启动命令。操作步骤如下
1. vi /etc/init.d/nginx ,其中具体的脚本展示如下：
#!/bin/bash
# nginx Startup script for the Nginx HTTP Server
# it is v.0.0.2 version.
# chkconfig: - 85 15
# description: Nginx is a high-performance web and proxy server.
# It has a lot of features, but it's not for everyone.
# processname: nginx
# pidfile: /var/run/nginx.pid
# config: /usr/local/nginx/conf/nginx.conf
#注意：这里的三个变量需要根据具体的环境而做修改。
nginxd=/opt/nginx/sbin/nginx
nginx_config=/opt/nginx/conf/nginx.conf
nginx_pid=/opt/nginx/logs/nginx.pid
RETVAL=0
prog="nginx"
# Check that networking is up.
[ -x $nginxd ] || exit 0
# Start nginx daemons functions.
start() {
if [ -e $nginx_pid ];then
echo "nginx already running...."
exit 1
fi
echo -n $"Starting $prog: "
$nginxd -c ${nginx_config}
RETVAL=$?
echo
[ $RETVAL = 0 ]
return $RETVAL
}
# Stop nginx daemons functions.
stop() {
echo -n $"Stopping $prog: "
$nginxd -s stop
RETVAL=$?
echo
[ $RETVAL = 0 ] && rm -f /var/lock/subsys/nginx $nginx_pid
}
# reload nginx service functions.
reload() {
echo -n $"Reloading $prog: "
kill -HUP `cat ${nginx_pid}`
RETVAL=$?
echo
}
# See how we were called.
case "$1" in
start)
start
;;
stop)
stop
;;
reload)
reload
;;
restart)
stop
start
;;
status)
status $prog
RETVAL=$?
;;
*)
echo $"Usage: $prog {start|stop|restart|reload|status|help}"
exit 1
esac
exit $RETVAL
2. 赋予可执行权限：
sudo chmod a+x /etc/init.d/nginx
3.编辑 /etc/rc.local ，在文件的最后中添加:
/etc/init.d/nginx start
然后，nginx可以通过 /etc/init.d/nginx start或者 service nginx start进行启动。
设置nginx开机自启动（Ubuntu）：
参考：https://blog.csdn.net/myslq/article/details/52470951
#!/bin/sh ### BEGIN INIT INFO # Provides: [email protected] # Required-Start: # Required-Stop: # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # Short-Description: nginx # Description: nginx server ### END INIT INFO . /lib/lsb/init-functions PROGRAM=/usr/local/openresty//nginx/sbin/nginx test -x $PROGRAM || exit 0 case "$1" in start) #detect the status of nginx pid Statusflag=`ps -ef | grep nginx | wc -l` #the min number is 3,even if the nginx is not running if [ $Statusflag -gt 3 ]; then log_begin_msg "Nginx is already running" log_end_msg 0 else log_begin_msg "Starting Nginx server" /usr/local/openresty/nginx/sbin/nginx log_end_msg 0 fi ;; stop) #detect the status of nginx pid Statusflag=`ps -ef | grep nginx | wc -l` #the min number is 3,even if the nginx is not running if [ $Statusflag -gt 3 ]; then PID=`ps -ef | grep nginx | head -1 | awk '{print $2}'` log_begin_msg "Stopping Nginx server" if [ ! -z "$PID" ]; then kill -15 $PID fi log_end_msg 0 else log_begin_msg "Nginx is not running" log_end_msg 0 fi ;; status) Statusflag=`ps -ef | grep nginx | wc -l` #the min number is 3,even if the nginx is not running if [ $Statusflag -gt 3 ]; then log_begin_msg "Nginx is running" else log_begin_msg "Nginx is not running" fi log_end_msg 0 ;; restart) #$0 stop ##It would be wrong to call this function directly. #detect the status of nginx pid Statusflag=`ps -ef | grep nginx | wc -l` #the min number is 3,even if the nginx is not running if [ $Statusflag -gt 3 ]; then PID=`ps -ef | grep nginx | head -1 | awk '{print $2}'` log_begin_msg "Stopping Nginx server" if [ ! -z "$PID" ]; then kill -15 $PID fi log_end_msg 0 else log_begin_msg "Nginx is not running" log_end_msg 0 fi #$0 start it would be wrong to call this function directly. log_begin_msg "Starting Nginx server" /usr/local/openresty/nginx/sbin/nginx log_end_msg 0 ;; *) log_success_msg "Usage: service nginx {start|stop|restart|status}" exit 1 esac exit 0
将上述内容保存为nginx放在/etc/init.d/目录下 ，然后执行：
sudo chmod +x ./nginx sudo update-rc.d nginx defaults
就可以使用service nginx {start|stop|restart|status} 了，优点是支持status，网上脚本大多没有加入查看status。缺点是没有根据nginx.pid查找进程运行状况，直接用的ps命令搜索nginx进程信息，kill -15可能会阻塞，无法杀掉进程。
最后发现还是官方写的最好，但是自己编译的二进制程序，建议取消upgrade选项，因为会改变二进制程序，贴下官方的：
#!/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
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