helm-charts/matrix-synapse/values.schema.json

{
  "$schema": "https://json-schema.org/draft-07/schema#",
  "title": "matrix-synapse values",
  "description": "Strict values schema (issue #68). additionalProperties is false on every chart-owned object level, so a key that the chart does not read is rejected at render time instead of being silently ignored. The only objects that stay open are the ones passed verbatim into the Kubernetes pod spec (probes, security contexts, global) - the chart does not interpret their contents, so it cannot judge which keys are meaningful. The hardening, probe and resources blocks of BOTH workloads additionally accept null, because an erased block falls back to the chart defaults (issue #99).",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "global": {
      "description": "Helm's conventional cross-chart values. Unused by this chart, kept open so an umbrella install cannot break on it.",
      "type": "object"
    },
    "networkPolicy": {
      "description": "The chart's NetworkPolicy (Gitea #5), on by default. A ceiling on reachability and not an authentication layer: only the declared container ports are reachable at all, egress is capped by PORT (a NetworkPolicy matches CIDRs and selectors, never hostnames, so a destination host cannot be expressed), and ingress is capped by source for every port no network probe touches. Only a boundary where the cluster's CNI enforces policies - an unenforced policy is accepted by the API server and filters nothing. The template's header carries the full list of what it does not do.",
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "enabled": {
          "type": "boolean"
        },
        "allowedNamespaces": {
          "description": "Namespaces whose pods may reach this workload, in addition to the release's own namespace, which is always allowed. Matched on the kubernetes.io/metadata.name label Kubernetes sets on every namespace itself, so no labelling work is needed - and no typo protection either: a name that does not exist matches nothing and is silently ineffective. An entry opens the port to EVERY pod in that namespace; for the ingress controller use ingressController instead.",
          "type": ["array", "null"],
          "items": {
            "type": "string"
          }
        },
        "probeSources": {
          "description": "Source CIDRs allowed to reach the port the network probes address. EMPTY MEANS OPEN, not blocked: with no entry that rule is rendered without a \"from\" selector. The kubelet's probes come from the IP of the worker node running the pod, an address the chart cannot know and must not guess - a guessed CIDR that excludes the real node blocks every probe and the pod never becomes Ready, which reads as a broken application rather than as a policy. Setting this restricts the rule, which is why the chart adds the own namespace, ingressController and allowedNamespaces to the same rule.",
          "type": ["array", "null"],
          "items": {
            "type": "string"
          }
        },
        "ingressController": {
          "description": "The ingress controller allowed to reach the routed port once probeSources restricts it; rendered only while ingress.enabled or httpRoute.enabled is true. The two keys become ONE \"from\" entry and are therefore an AND - pods carrying podLabels IN namespace - which is the whole point: the controller's namespace in allowedNamespaces would open the port to every pod in kube-system. The default is measured on this cluster (DaemonSet rke2-traefik in kube-system, which also serves the Gateway API here), not assumed; a policy written against the wrong controller is accepted, looks strict and silently blocks all web traffic.",
          "type": ["object", "null"],
          "additionalProperties": false,
          "properties": {
            "namespace": {
              "type": ["string", "null"]
            },
            "podLabels": {
              "description": "Label set the controller's pods carry, rendered verbatim as a podSelector's matchLabels. Kept open because the chart does not interpret the keys.",
              "type": ["object", "null"]
            }
          }
        },
        "egress": {
          "type": ["object", "null"],
          "additionalProperties": false,
          "properties": {
            "extraPorts": {
              "description": "Additional outbound TCP ports, to ANY destination - ports and not destinations, because a NetworkPolicy cannot express a hostname. DNS is always allowed and has no switch. Without an entry here an outbound port the chart does not already derive is blocked, which is the cap's whole purpose and also its upgrade risk.",
              "type": ["array", "null"],
              "items": {
                "type": "integer"
              }
            }
          }
        }
      }
    },
    "scaleDown": {
      "type": "boolean"
    },
    "secrets": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "configSecretRef": {
          "description": "op:// item path for homeserver.yaml. Changing the item CONTENT does not restart Synapse - Helm never sees it, so it cannot be hashed (#82); restart the StatefulSet by hand.",
          "type": ["string", "null"]
        }
      }
    },
    "matrix": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "replicas": {
          "type": "integer",
          "minimum": 0
        },
        "serverName": {
          "type": ["string", "null"]
        },
        "timezone": {
          "type": ["string", "null"]
        },
        "securityContext": {
          "$ref": "#/definitions/securityContext"
        },
        "livenessProbe": {
          "$ref": "#/definitions/probe"
        },
        "readinessProbe": {
          "$ref": "#/definitions/probe"
        },
        "startupProbe": {
          "$ref": "#/definitions/probe"
        },
        "env": {
          "$ref": "#/definitions/env"
        },
        "resources": {
          "$ref": "#/definitions/resources"
        },
        "delegation": {
          "description": "The delegation nginx Deployment, which serves the /.well-known/matrix/* endpoints. Disabled by default.",
          "type": "object",
          "additionalProperties": false,
          "properties": {
            "replicas": {
              "type": "integer",
              "minimum": 0
            },
            "enabled": {
              "type": "boolean"
            },
            "serverUrl": {
              "type": ["string", "null"]
            },
            "image": {
              "description": "Auxiliary image, pinned independently of appVersion (which tracks Synapse).",
              "type": "object",
              "additionalProperties": false,
              "properties": {
                "repository": {
                  "type": ["string", "null"]
                },
                "tag": {
                  "type": ["string", "number", "null"]
                }
              }
            },
            "securityContext": {
              "$ref": "#/definitions/securityContext"
            },
            "livenessProbe": {
              "$ref": "#/definitions/probe"
            },
            "readinessProbe": {
              "$ref": "#/definitions/probe"
            },
            "startupProbe": {
              "$ref": "#/definitions/probe"
            },
            "resources": {
              "$ref": "#/definitions/resources"
            }
          }
        }
      }
    },
    "storage": {
      "description": "The data PVC. Not null-safe on purpose: an erased block yields an invalid PVC rather than a silently degraded workload.",
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "amount": {
          "type": ["string", "null"]
        },
        "storageClass": {
          "type": ["string", "null"]
        }
      }
    },
    "ingress": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "enabled": {
          "description": "Gates the whole Ingress template (issue #93). Mutually exclusive with httpRoute.enabled - the render aborts when both are true. false omits the Ingress and makes clusterIssuer unnecessary - but NOT domain, which the delegation nginx also serves in its /.well-known/matrix/* endpoints and which the HTTPRoute reads as its hostname.",
          "type": "boolean"
        },
        "domain": {
          "description": "The homeserver hostname. Read by the Ingress, by the HTTPRoute (when httpRoute.hostnames is empty) and by the delegation nginx, which serves it inside /.well-known/matrix/client - so it is required in every mode while delegation is on.",
          "type": ["string", "null"]
        },
        "clusterIssuer": {
          "type": ["string", "null"]
        },
        "className": {
          "type": ["string", "null"]
        },
        "annotations": {
          "description": "Extra Ingress annotations, merged with the cert-manager annotation the chart always sets. Free-form keys by nature. INERT IN GATEWAY MODE: the Gateway API has no annotation channel. This installation's live Ingress carries proxy-body-size 50m (which has no counterpart and must be re-established at the Gateway) and a configuration-snippet of more_set_headers directives (which must NOT be re-established - see values.yaml, httpRoute block).",
          "type": "object"
        }
      }
    },
    "httpRoute": {
      "description": "Gateway-API alternative to the Ingress (Gitea #114). Mutually exclusive with ingress.enabled - the render aborts when both are true, naming both value paths. The chart renders only HTTPRoutes with parentRefs; class and certificate sit on the Gateway and belong to the platform. TWO routes, not one: the Ingress is a single object with two host rules (homeserver at /, delegation at /.well-known/matrix), and an HTTPRoute's hostnames apply to the whole object, so two hostnames wanting different paths and backends must be two objects. NOT COVERED IN THIS MODE: proxy-body-size, which this installation carries at 50m and which Synapse's own max_upload_size has to agree with - see values.yaml, httpRoute block, including why the configuration-snippet on the live object is NOT a loss. The Gateway-API CRDs must be present in the cluster, because the chart cannot detect them.",
      "type": ["object", "null"],
      "additionalProperties": false,
      "properties": {
        "enabled": { "type": "boolean" },
        "parentRefs": {
          "description": "The Gateway(s) the homeserver route attaches to. Required while httpRoute.enabled is true, enforced by required()-equivalent in the template (an empty list aborts the render) - a JSON Schema \"required\" cannot do it, because the key ships as an empty list and is therefore present. Entries are the Gateway API's ParentReference and are passed through unchanged.",
          "type": "array",
          "items": { "$ref": "#/definitions/parentRef" }
        },
        "hostnames": {
          "description": "Empty means [ingress.domain], so the homeserver hostname has a single source of truth. Does NOT cover the delegation host - see httpRoute.delegation.hostnames.",
          "type": "array",
          "items": { "type": "string" }
        },
        "delegation": {
          "description": "The delegation route, rendered while matrix.delegation.enabled is true - the same switch the Ingress's second host rule uses.",
          "type": ["object", "null"],
          "additionalProperties": false,
          "properties": {
            "parentRefs": {
              "description": "Empty falls back to httpRoute.parentRefs. Worth setting when the server name is published by a different Gateway than the homeserver host, which is the normal case - the server name is an apex domain somebody else's website usually owns.",
              "type": "array",
              "items": { "$ref": "#/definitions/parentRef" }
            },
            "hostnames": {
              "description": "Empty means [matrix.delegation.serverUrl]. 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 hostname, and the migration order depends on telling them apart.",
              "type": "array",
              "items": { "type": "string" }
            }
          }
        }
      }
    }
  },
  "definitions": {
    "parentRef": {
      "description": "A Gateway API ParentReference, passed verbatim into HTTPRoute.spec.parentRefs. Deliberately left OPEN (no additionalProperties: false), for the same reason probes and security contexts are: Kubernetes owns this schema, the Gateway API adds fields to it across releases, and a closed list here would reject a field only upstream knows about. What the chart can assert is that \"name\" is there - it is required by the API and a reference without it attaches to nothing, which is the silent failure this chart aborts the render over.",
      "type": "object",
      "required": ["name"]
    },
    "resources": {
      "description": "May be null / empty: the chart then falls back to its default requests and computed limits (issue #99) instead of rendering a container without resource accounting.",
      "type": ["object", "null"],
      "additionalProperties": false,
      "properties": {
        "limitFactor": {
          "type": "number",
          "exclusiveMinimum": 0
        },
        "requests": {
          "$ref": "#/definitions/resourceList"
        },
        "limits": {
          "$ref": "#/definitions/resourceList"
        }
      }
    },
    "resourceList": {
      "type": ["object", "null"],
      "additionalProperties": false,
      "properties": {
        "cpu": {
          "type": ["string", "number", "null"]
        },
        "memory": {
          "type": ["string", "number", "null"]
        },
        "ephemeral-storage": {
          "type": ["string", "number", "null"]
        },
        "ephemeralStorage": {
          "type": ["string", "number", "null"]
        }
      }
    },
    "env": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": ["name"],
        "properties": {
          "name": {
            "type": "string"
          },
          "value": {
            "type": "string"
          },
          "valueFrom": {
            "type": "object",
            "additionalProperties": false,
            "properties": {
              "secretKeyRef": {
                "$ref": "#/definitions/keyRef"
              },
              "configMapKeyRef": {
                "$ref": "#/definitions/keyRef"
              }
            }
          }
        }
      }
    },
    "keyRef": {
      "type": "object",
      "additionalProperties": false,
      "required": ["name", "key"],
      "properties": {
        "name": {
          "type": "string"
        },
        "key": {
          "type": "string"
        }
      }
    },
    "securityContext": {
      "description": "May be null / empty at any level: the chart then falls back to its hardening defaults (issue #99) instead of rendering an unhardened workload.",
      "type": ["object", "null"],
      "additionalProperties": false,
      "properties": {
        "pod": {
          "description": "Merged onto the chart's pod hardening defaults and rendered as the pod's securityContext; kept open because the chart does not interpret the individual fields.",
          "type": ["object", "null"]
        },
        "container": {
          "description": "Merged onto the chart's container hardening defaults and rendered as the container's securityContext; kept open because the chart does not interpret the individual fields.",
          "type": ["object", "null"]
        }
      }
    },
    "probe": {
      "description": "Merged onto the chart's probe defaults and rendered as a container probe; kept open because the chart does not interpret the individual fields. May be null / empty, which means the defaults apply (issue #99) rather than the probe disappearing.",
      "type": ["object", "null"]
    }
  }
}