centos 7 设置 nginx 开机启动

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创建开机启动命令脚本文件

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vi /etc/init.d/nginx

在这个nginx文件中插入一下启动脚本代码，启动脚本代码来源网络复制，实测有效

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#! /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

设置所有人都有对这个启动脚本nginx文件的执行权限

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chmod a+x /etc/init.d/nginx

把nginx加入系统服务中

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chkconfig --add nginx

把服务设置为开机启动

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chkconfig nginx on

reboot重启系统生效

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#启动nginx服务
systemctl start nginx.service
#停止nginx服务
systemctl stop nginx.service
#重启nginx服务
 
#同时也可以通过下面的命令进行服务重启，停止操作
service nginx restart
service nginx start
service nginx stop

如果服务启动的时候出现 Restarting nginx daemon: nginxnginx: [error] open() “/usr/local/nginx/logs/nginx.pid” failed (2: No such file or directory)
nginx not running 的错误，通过nginx -c 参数指定配置文件即可解决

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/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf

如果服务启动中出现 nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use) 的错误，可以先通过service nginx stop 停止服务，再启动就好。