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secondary: scaffold public CoreDNS secondary on ns.supported.systems

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Adds a second non-HE public secondary that pulls AXFR from dell01 (the
hidden primary at 154.27.180.210) and answers public queries on
ns.supported.systems (64.177.113.227, 2001:19f0:5c00:4daa:5400:6ff:fe2d:38fa).

  secondary/
    Corefile                            generated, 84 zones + REFUSED catch-all
    docker-compose.yml                  CoreDNS in host-net mode
    Makefile                            up/down/logs/regen/test/axfr-test
    .env / .env.example                 image pin + bind IPs
    scripts/generate-secondary-corefile.sh  reads ../zones/*.zone

  scripts/notify-he.py → notify-secondaries.py
                                        adds 64.177.113.227 as a second
                                        NOTIFY target alongside HE's
                                        216.218.130.2

Uses CoreDNS's `bind` plugin to avoid colliding with systemd-resolved
on loopback :53. Authoritative-only — non-listed zones get REFUSED, no
recursion. AXFR pull requires opening TCP/53 on dell01's FortiWiFi for
the secondary's IP (manual step, separate from this commit).
This commit is contained in:
Ryan Malloy 2026-05-20 18:40:11 -06:00
parent 94f2bdc68a
commit 618e9504e7
9 changed files with 276 additions and 22 deletions
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secondary/.gitignore vendored Normal file
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# Runtime-only — never commit
.env
.env.local