Use the downtime tag for questions relating to avoiding your website being down during upgrades, maintenance, high traffic, and other events related to webmastering. As well as the importance of being available to visitors, site uptime is a factor in search engine optimisation.
I was recently unable to reach my website, receiving a 504 time-out error instead. I checked the logs and found a GET request for /manager/html. I realize this was a failed attempt to reach a control ...