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CoreDNS workshop

CoreDNS is a fast and flexible Domain Name Server.

Some interesting capabilities are

  • Serve zone data from a file; both DNSSEC (NSEC only) and DNS are supported (file)

  • Retrieve zone data from primaries, i.e., act as a secondary server (AXFR only) (secondary)

  • Sign zone data on-the-fly (dnssec).

  • Load balancing of responses (loadbalance).

  • Allow for zone transfers, i.e., act as a primary server (file).

  • Automatically load zone files from disk (auto).

  • Caching (cache).

  • Health checking endpoint (health).

  • Implements "chain of responsibility" pattern.

  • Chains HTTP middleware.

  • can talk to multiple backends such as etcd.

  • flexible processing of DNS data

https://github.com/coredns/coredns

CoreDNS is repurposed beyond Caddy, SkyDNS and is a replacement for BIND in microservice environments.

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