This error is displayed after restarting the virtual machine
Why is there such an error? First, check whether there is a problem with the configuration file of nginx.conf
into sbin and then
./nginx -s reload reload and no error is reported, indicating that there is no problem with the configuration file
Then I went to check the error report and found that it was caused by insufficient permissions.
Why is there insufficient permission to use ./nginx?
Here you can see that the permission setting of ./nginx is root, which means that after restarting the server, you need to obtain root permission and then start nginx
Obtain root privileges and start nginx again
Summary: If ps -ef |grep nginx finds that if this is www, then you need to open it
chown [option] [owner]:[group] file... Open it and get permission to start normally./nginx service