https://cachethq.io/ is great for this

Amusingly enough, it is down right now because of Cloudflare :-)

Been using Cachet for quite a while before inevitably migrating to Atlassian's Statuspage.io. I'm a huge fan of self-hosting and self-managing every single thing in existence but Cachet was just such a PITA to maintain and there was just no other good alternative to Cachet that was also open source.