Traffic Management With Istio (4): DNS Resolution With CoreDNS

CoreDNS and Its Plugin Extension

CoreDNS is an incubation-level project under the CNCF umbrella that was formerly known as SkyDNS. Its main purpose is to build a fast and flexible DNS server that allows users to access and use DNS data in different ways. Based on the Caddy server framework, CoreDNS implements a plugin chain architecture that abstracts large volumes of logic into the form of a plugin, which it then exposes to its users. Each plugin performs DNS functions, such as DNS service discovery of Kubernetes, Prometheus monitoring, and so on.

In addition to pluginization, CoreDNS also has the following features:

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