 maintaining and troubleshooting your site maintaining and troubleshooting overview here are some tasks and hints related to maintaining your site and troubleshooting problems that may come up on your site see the related topics below for more information when performing maintenance such as installing uninstalling or updating a module put your site in maintenance mode configure your site so that cron runs periodically if your site is not behaving as expected clear the cache before trying to diagnose the problem there are several site reports that can help you diagnose problems with your site there are also two core modules that can be used for error logging database logging and syslog additional resources preventing and fixing problems drupal user guide  security and maintenance drupal user guide  