6bde72192f548defdd8d2feff2021cb39b85f998
2
Commits
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e54cfe5fdd
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feat(matrix-synapse): Gateway-API as an alternative to the Ingress
Group 3 of the #114 sweep. TWO HTTPRoutes - and the shape is not the one the issue described. #114 says this chart renders its Ingresses in a LOOP OVER SEVERAL APPS. It does not; that is freesailarr. It renders ONE Ingress object with TWO HOST rules: the homeserver on ingress.domain at "/", and the delegation nginx on matrix.delegation.serverUrl at "/.well-known/matrix". An HTTPRoute's spec.hostnames applies to the WHOLE object, so two hostnames that want different paths and different backends have to be two objects. That is the only faithful translation, not a stylistic choice. httpRoute.delegation.hostnames deliberately does NOT fall back to httpRoute.hostnames. The server name is what REMOTE homeservers resolve and is a different thing from the homeserver's own hostname; the migration order - homeserver host first, server name last - depends on telling them apart, and a chart-global hostname list covering both would erase the distinction. httpRoute.delegation.parentRefs falls back to httpRoute.parentRefs, which matters because the server name is usually an apex domain behind a different Gateway. ONE THING THIS MODE IMPROVES, and it is the awkward part of Matrix delegation. Under ingress-nginx two Ingress objects cannot both claim one hostname - the admission webhook rejects the second - which is why the delegation rule has to live inside this chart's single Ingress object even though the apex domain usually belongs to a website. HTTPRoutes attached to the same listener for the same hostname are merged by the implementation, longest match winning, so the /.well-known/matrix route can sit beside whatever owns that apex. WHAT THIS MODE DROPS, MEASURED ON THE LIVE OBJECT ON 2026-10-12 - and ONE OF THE TWO IS NOT WHAT IT LOOKS LIKE. The live Ingress carried, all of it operator-supplied through ingress.annotations (this chart sets none of it): nginx.ingress.kubernetes.io/proxy-body-size: 50m nginx.org/client-max-body-size: 50m nginx.ingress.kubernetes.io/configuration-snippet: | more_set_headers "X-Forwarded-For $remote_addr"; more_set_headers "X-Forwarded-Proto $scheme"; more_set_headers "Host $host:$server_port"; 1. THE BODY SIZE IS THE REAL LOSS. Synapse's media repository takes uploads; its own ceiling is max_upload_size in homeserver.yaml, which this chart cannot see because the whole config arrives from 1Password. The effective limit is the smaller of the two, and in this mode the proxy half becomes the GATEWAY'S default - neither number anyone can point at is necessarily the one that decides. No counterpart in the Gateway API, so per decision 2 of #114 it is documented, not rebuilt. nginx.org/client-max-body-size is the same limit spelled for NGINX Inc's controller, a hedge across both implementations, and it goes for the same reason. (#114's own measured table did not list matrix-synapse under proxy-body-size at all; the live object has it.) 2. THE SNIPPET IS NOT LOAD-BEARING, which took checking rather than assuming. It looks like what Synapse's x_forwarded setting depends on - client IP for rate limiting, and federation. It is not: more_set_headers is the headers-more module's OUTPUT-header directive ("Replaces (if any) or adds (if not any) the specified output headers"), the request-side directive being more_set_input_headers. So those three headers are added to the RESPONSE TO THE CLIENT; Synapse never sees them, and what it reads with x_forwarded: true is the REQUEST's X-Forwarded-For, which ingress-nginx supplies itself. The Gateway API's ResponseHeaderModifier could not rebuild it anyway (it knows no nginx variables), and should not: NOTES.txt says in as many words not to re-create it and not to read its absence as the cause of a rate-limiting or federation problem. Stated as what it is - a reading of the directive's documented semantics. Nothing here observed a Synapse instance with and without the snippet. NOTES.txt now asks $published (ingress.enabled OR httpRoute.enabled) wherever it used to ask ingress.enabled - the server-name/serverUrl mismatch warning, the "clients work fine" aside and the scaled-to-zero paragraph were all really asking whether anything publishes the release. Minor: additive, defaults unchanged. Empty helm template diff against origin/main with ci/matrix-synapse/test-values.yaml. Part of #114 |
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1ddb5f457e
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matrix-synapse: strict schema, ingress gate and null-safe hardening
Three changes, across both workloads (Synapse StatefulSet and delegation nginx Deployment). 1. values.schema.json (#68): additionalProperties: false on every chart-owned object level, including the whole matrix.delegation block with its own contexts, probes and resources. 2. Ingress gate (#93): the Ingress template is wrapped in {{- if .Values.ingress.enabled }} and the key is added to values.yaml with default true, so behaviour is unchanged. The domain checkpoint found a second reader: the delegation nginx serves ingress.domain in its /.well-known/matrix/{server,client} endpoints, and read it without a guard. Gating alone would therefore have published '{"m.server": ":443"}' and base_url "https://" - a federation-breaking answer that renders and starts cleanly. Both reads are now required(), so that case fails loudly. Only clusterIssuer actually becomes unnecessary when the Ingress is off. 3. Null-safety for hardening, probes and resources (#99) for both workloads. The rebuilt probes keep each workload's own endpoint: Synapse /health, delegation /.well-known/matrix/server - the endpoint that workload exists to serve - including its shorter 3s timeout. The delegation pod context keeps having no fsGroup, because it mounts no volume that needs one. The nginx checksum/config annotation from #82 is untouched. storage stays deliberately not null-safe: an erased block yields an invalid PVC, which is the loud class #99 excludes. Rendering is byte-identical to 6.0.0, both with the CI values (which enable delegation) and with the production bundle values. |