Traefik v3 ignores tls.stores.default in the static config, causing it to serve its auto-generated fallback cert instead of the platform cert. Moving the default certificate store to the dynamic config (file provider) fixes this — Traefik now serves the correct cert and also picks up cert rotations without a restart. This was the root cause of OIDC PKIX failures: the server imported the CA into its JVM truststore, but Traefik was serving a different cert entirely. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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