docs: clarify proxy cache trust boundary for upstream token-service discovery#706
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OrlinVasilev merged 1 commit intogoharbor:mainfrom Feb 26, 2026
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…iscovery document that proxy cache follows upstream WWW-Authenticate bearer realm challenges when obtaining tokens. clarify that token service endpoints can differ from the registry host, and recommend trusted endpoints plus least-privilege upstream credentials. docs-only change; no behavior or config changes.
Vad1mo
approved these changes
Feb 19, 2026
OrlinVasilev
approved these changes
Feb 26, 2026
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docs: clarify proxy cache trust boundary for upstream token-service discovery
what this changes
this PR adds documentation notes in two places:
docs/administration/configure-proxy-cache/_index.mddocs/administration/configuring-replication/create-replication-endpoints.mdthe notes clarify that:
WWW-Authenticateauthentication challenges to obtain tokenswhy
this makes the existing trust model explicit for operators using proxy cache, without changing Harbor behavior or adding new configuration.
compatibility
validation
related context
this PR follows maintainer guidance to submit this clarification in
goharbor/website.