Xampp installation encounters World-writable config file '/opt/lampp/etc/my. cnf 'is ignored error solution: xampp is installed on ubuntu today. After the installation is complete, the system prompts World-writable config file'/opt/lampp/etc/my when lampp start is executed. cnf 'is ignored and mysql cannot be started. Enter phpmyadmin in the browser and prompt Wrong permissions on configuration file, shocould not be world writable! According to the error prompt, it may be because the permissions of the entire lampp directory are set to 777 during installation. Www.2cto.com solution: Go to lampp/etc/and change the permission of my. cnf to 755 to restart lampp. Similarly, you can change the phpmyadmin permission to 755. Now, all the problems are solved. PS: For security reasons, xampp does not allow the maximum permission range of mysql and phpmyadmin. During installation, do not set the permission of the entire lampp directory to 777. Author lt200819