1、关闭nginx
利用ps -aux | grep nginx 查看nginx是否启动 如果启动了就kill杀死
2、创建/etc/init.d/nginx文件
root@dnnp:~/software/nginx-1.2.3# vim /etc/init.d/nginx
3、添加权限并启动
root@dnnp:~/software/nginx-1.2.3# chmod +x /etc/init.d/nginx root@dnnp:~/software/nginx-1.2.3# /etc/init.d/nginx start Starting nginx: nginx. root@dnnp:~/software/nginx-1.2.3# ps -aux | grep nginx Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html root 25078 0.0 0.0 4596 700 ? Ss 14:20 0:00 nginx: master process /usr/local/nginx/sbin/nginx nobody 25079 0.0 0.1 4820 1056 ? S 14:20 0:00 nginx: worker process root 25081 0.0 0.0 3304 768 pts/0 S+ 14:20 0:00 grep nginx root@dnnp:~/software/nginx-1.2.3#
注:/etc/init.d/nginx文件内容如下
#! /bin/sh
### BEGIN INIT INFO
# Provides: nginx
# Required-Start: $all
# Required-Stop: $all
# 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/local/nginx/sbin/nginx
NAME=nginx
DESC=nginx
test -x $DAEMON || exit 0
# Include nginx defaults if available
if [ -f /etc/default/nginx ] ; then
. /etc/default/nginx
# . /usr/local/nginx/conf
fi
set -e
. /lib/lsb/init-functions
case "$1" in
start)
echo -n "Starting $DESC: "
start-stop-daemon --start --quiet --pidfile /usr/local/nginx/logs/$NAME.pid \
--exec $DAEMON -- $DAEMON_OPTS || true
echo "$NAME."
;;
stop)
echo -n "Stopping $DESC: "
start-stop-daemon --stop --quiet --pidfile /usr/local/nginx/logs/$NAME.pid \
--exec $DAEMON || true
echo "$NAME."
;;
restart|force-reload)
echo -n "Restarting $DESC: "
start-stop-daemon --stop --quiet --pidfile \
/usr/local/nginx/logs/$NAME.pid --exec $DAEMON || true
sleep 1
start-stop-daemon --start --quiet --pidfile \
/usr/local/nginx/logs/$NAME.pid --exec $DAEMON -- $DAEMON_OPTS || true
echo "$NAME."
;;
reload)
echo -n "Reloading $DESC configuration: "
start-stop-daemon --stop --signal HUP --quiet --pidfile /usr/local/nginx/logs/$NAME.pid \
--exec $DAEMON || true
echo "$NAME."
;;
status)
status_of_proc -p /usr/local/nginx/logs/$NAME.pid "$DAEMON" nginx && exit 0 || exit $?
;;
*)
N=/etc/init.d/$NAME
echo "Usage: $N {start|stop|restart|reload|force-reload|status}" >&2
exit 1
;;
esac
exit 0
在nginx的早期版本,nginx重启需要通过kill命令向nginx发送信号来实现nginx的重启。
但是,现在,nginx增加了-s选项,实现nginx的停止,重新加载功能。
1. 如果是平滑的重启nginx,可以用./nginx -s reload命令实现nginx的平滑重启。
2. 如果是非平滑重启,则可以先停止nginx,然后再启动:
./nginx -s stop && ./nginx
当我们修改nginx配置后,希望重启nginx以便让nginx生效,此时为了保证nginx在重启阶段还能够提供正常的服务,一般采用平滑重启的方式(reload)重启nginx。此时,nginx会加载新的配置,然后fork出新的worker进程。同时,master进程会向老的worker进程发送信号,告诉老的worker进程当前的情况。老的worker进程受到master进程的信号后,如果当时没有处理请求则会退出,如果正在处理请求,则老的worker进程会处理完请求然后退出。nginx就是通过这种方式去reload新的配置,从而使得在重启的过程中,仍然可以提供服务。
start 启动服务 stop 停止服务 reload 重读配置 restart 重启服务
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