[mnem]

AWS generally, although not always, shows an alert before this happens.

However, I totally agree - if you are running any sort of service where you have a financial penalty if that service goes down, then it's your responsibility to ensure your service's architecture supports catastrophic failure of nodes. 1 machine running all the things isn't high availability and shouldn't be sold as such.

[coolboykl]

I do agree, We do setup for HA, but due to some bugs on our end, the cut over from our DB Slave to Master didn't happen. Will be more careful next time.