Add a "Does not contain" option
The content on the site may vary a lot, but it should never include words like "exception" or "error", which is what we want to check for.
Sorry but this won’t be added, we consider it to be a bad practice as this would miss most actual errors returned by your servers and drastically reduce monitoring quality (which would then be blamed on us). If you don’t care about the content present, just don’t use this feature and rely on standard HTTP status check.
Ahmad Naser commented
This would be handy! Can't you just allow it but add a warning "not recommended" if you don't think its good practice?
Sir Apfelot commented
I would like to have this option too. Just to monitor content on the page. People use your service for much more than server monitoring.
Actually, I have a site that currently has a "Coming soon" page -- I want to know if somehow the site is launched before it should, and the words "Coming soon" disappear. I'd love a "does not contain" option.