Apache Debug Mode
When you are facing some errors issues with Apache. Its always better to start the Apache in debug mode rather than starting and restarting the Apache service.
You can change the LogLevel of the Apache temporarily, without modifying the LogLevel directive in the httpd.conf as shown below using option -e. In this example, the LogLevel is set to debug.
httpd -k start -e debug
You can pass these values with -e option:
Below is the screenshot of my machine, here I had intentionally changed the Listen directive to Liten and run the command.