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docs: note dns_canonicalize_hostname=false may be needed #3

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Merged
kratsg merged 1 commit into from
Sep 4, 2026
Merged

docs: note dns_canonicalize_hostname=false may be needed #3

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5 changes: 4 additions & 1 deletion README.md
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Expand Up @@ -249,7 +249,10 @@ privilege model this service needs:
stance for its own trust material. Set `krb5Config.override: true` to
instead render `krb5Config.contents` into a ConfigMap mounted over that
same path via `subPath`, so a CERN KDC hostname change needs no image
rebuild.
rebuild. Depending on your resolver/network setup, you may need to add
`dns_canonicalize_hostname = false` under `[libdefaults]` in that
overridden config to stop the DNS lookup from canonicalizing the KDC
hostname — confirmed necessary at UChicago's AF.
- **NetworkPolicy** — ingress only from the broker pods; egress limited to
DNS, the broker JWKS origin, and the CERN KDC(s) `kinit` contacts, opened
on **both UDP and TCP port 88** (all `ipBlock` rules, since these servers
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