Monitoring domains and DNSSEC properly
First of all, if you own a domain, the following text is for you. In production you obviously want to reduce outages. And an outage of a DNS domain as such takes down all services under that domain, no matter whether your LAMP components are all up and running. At least from users’ perspective. As usually, roughly speaking, monitoring has to “play end user” to properly discover failures end-to-end. At best you have an Icinga satellite (e.g.