//运行sudo service nginx restart报错
root@iZm5e3iekfi2rh6udbikaZ:/etc# sudo service nginx restart
* Restarting nginx nginx [fail]
//运行sudo service nginx start没有返回消息
root@iZm5e3iekfi2rh6udbikaZ:/etc# sudo service nginx start
//查看nginx进程，也没有响应的nginx进程
root@iZm5e3iekfi2rh6udbikaZ:/etc# ps -axu | grep nginx
root 17194 0.0 0.0 11760 2260 pts/4 S+ 10:41 0:00 grep --color=auto nginx
解决的方法就是查看当前nginx是因为什么报错
//输入sudo nginx -t，查看错误原因
root@iZm5e3iekfi2rh6udbikaZ:/etc/nginx/conf.d# sudo nginx -t
//返回报错原因，我的错误原因是因为family1.conf文件的第22行少了一个";" 或者 "}"
nginx: [emerg] unexpected end of file, expecting ";" or "}" in /etc/nginx/conf.d/family1.conf:22
nginx: configuration file /etc/nginx/nginx.conf test failed
根据返回的错误原因修改了之后，再次运行sudo nginx -t，现在已经正确了
root@iZm5e3iekfi2rh6udbikaZ:/etc/nginx/conf.d# sudo nginx -t
//返回正确的信息
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
再次启动nginx
//运行sudo service nginx start
root@iZm5e3iekfi2rh6udbikaZ:/etc/nginx/conf.d# sudo service nginx start
//查看nginx进程，可以看到nginx的进程，现在启动成功了~
root@iZm5e3iekfi2rh6udbikaZ:/etc/nginx/conf.d# ps -axu | grep nginx
root 17374 0.0 0.0 77932 2772 ? Ss 11:00 0:00 nginx: master process /usr/sbin/nginx
root 17375 0.0 0.0 78280 3324 ? S 11:00 0:00 nginx: worker process
root 17376 0.0 0.0 78280 3324 ? S 11:00 0:00 nginx: worker process
root 17377 0.0 0.0 78280 3324 ? S 11:00 0:00 nginx: worker process
root 17378 0.0 0.0 78280 3324 ? S 11:00 0:00 nginx: worker process
root 17380 0.0 0.0 11760 2164 pts/4 S+ 11:00 0:00 grep --color=auto nginx
