This is why having a monitoring solution for all your cloud hosted instances is so important, and its not mentioned here, but you should never trust the monitoring provided by your cloud host. One of the first things I do with any cloud provider I have is add it to three monitoring tools. One at a hosted data center. One in "The Cloud" (AWS,DigitalOcean,...) and one in my basement. I can then set it up to send me e-mails if I start noticing performance problems from any of those sites.