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MeshAccessLog

With the MeshAccessLog policy you can easily set up access logs on every data plane proxy in a mesh.

This policy uses a new policy matching algorithm. Do not combine with TrafficLog.

This guide assumes you have already configured your observability tools to work with Kuma. If you haven’t, see the observability docs.

`targetRef` support matrix

`targetRef`	Allowed kinds
`targetRef.kind`	`Mesh`, `Dataplane`
`to[].targetRef.kind`	`Mesh`, `MeshService`, `MeshExternalService`

`targetRef`	Allowed kinds
`targetRef.kind`	`Mesh`, `MeshGateway`, `MeshGateway` with `tags`
`to[].targetRef.kind`	`Mesh`, `MeshService`
`from[].targetRef.kind`	`Mesh`

`targetRef`	Allowed kinds
`targetRef.kind`	`Mesh`, `MeshSubset`
`to[].targetRef.kind`	`Mesh`, `MeshService`, `MeshExternalService`

To learn more about the information in this table, see the matching docs.

Configuration

Format

Kuma gives you full control over the format of the access logs.

The shape of a single log record is defined by a template string that uses command operators to extract and format data about a TCP connection or an HTTP request.

For example:

%START_TIME% %KUMA_SOURCE_SERVICE% => %KUMA_DESTINATION_SERVICE% %DURATION%

%START_TIME% and %KUMA_SOURCE_SERVICE% are examples of available command operators.

All command operators defined by Envoy are supported, along with additional command operators defined by Kuma:

Command Operator	Description
`%KUMA_MESH%`	Name of the mesh in which traffic is flowing.
`%KUMA_SOURCE_SERVICE%`	Name of a `service` that is the `source` of traffic.
`%KUMA_DESTINATION_SERVICE%`	Name of a `service` that is the `destination` of traffic.
`%KUMA_SOURCE_ADDRESS_WITHOUT_PORT%`	Address of a `Dataplane` that is the `source` of traffic.
`%KUMA_TRAFFIC_DIRECTION%`	Direction of the traffic, `INBOUND`, `OUTBOUND`, or `UNSPECIFIED`.

All additional access log command operators are valid to use with both TCP and HTTP traffic.

Internally, Kuma determines traffic protocol based on the value of kuma.io/protocol tag on the inbound interface of a destination Dataplane.

There are two types of format, plain and json.

Plain accepts a string with command operators and produces a string output.

JSON accepts a list of key-value pairs that produces a valid JSON object.

It is up to the user to decide which format type to use. Some system will automatically parse JSON logs and allow you to filter and query based on available keys.

If a command operator is specific to HTTP traffic, such as %REQ(X?Y):Z% or %RESP(X?Y):Z%, in the case of TCP traffic it will be replaced by a symbol “-” for plain and a null value for json. You can set the format.omitEmptyValues boolean option to change this to "" for plain and omit them entirely for json.

Plain

The default format string for TCP traffic is:

[%START_TIME%] %RESPONSE_FLAGS% %KUMA_MESH% %KUMA_SOURCE_ADDRESS_WITHOUT_PORT%(%KUMA_SOURCE_SERVICE%)->%UPSTREAM_HOST%(%KUMA_DESTINATION_SERVICE%) took %DURATION%ms, sent %BYTES_SENT% bytes, received: %BYTES_RECEIVED% bytes

The default format string for HTTP traffic is:

[%START_TIME%] %KUMA_MESH% "%REQ(:METHOD)% %REQ(X-ENVOY-ORIGINAL-PATH?:PATH)% %PROTOCOL%" %RESPONSE_CODE% %RESPONSE_FLAGS% %BYTES_RECEIVED% %BYTES_SENT% %DURATION% %RESP(X-ENVOY-UPSTREAM-SERVICE-TIME)% "%REQ(X-FORWARDED-FOR)%" "%REQ(USER-AGENT)%" "%REQ(X-REQUEST-ID)%" "%REQ(:AUTHORITY)%" "%KUMA_SOURCE_SERVICE%" "%KUMA_DESTINATION_SERVICE%" "%KUMA_SOURCE_ADDRESS_WITHOUT_PORT%" "%UPSTREAM_HOST%"

Example configuration:

format:
  type: Plain
  plain: '[%START_TIME%] %BYTES_RECEIVED%'

Example output:

[2016-04-15T20:17:00.310Z] 154

JSON

Example configuration:

format:
  type: Json
  json:
    - key: "start_time"
      value: "%START_TIME%"
    - key: "bytes_received"
      value: "%BYTES_RECEIVED%"

Example output:

{
  "start_time": "2016-04-15T20:17:00.310Z",
  "bytes_received": "154"
}

TCP configuration with default fields:

format:
  type: Json
  json:
    - key: "start_time"
      value: "%START_TIME%"
    - key: "response_flags"
      value: "%RESPONSE_FLAGS%"
    - key: "kuma_mesh"
      value: "%KUMA_MESH%"
    - key: "kuma_source_address_without_port"
      value: "%KUMA_SOURCE_ADDRESS_WITHOUT_PORT%"
    - key: "kuma_source_service"
      value: "%KUMA_SOURCE_SERVICE%"
    - key: "upstream_host"
      value: "%UPSTREAM_HOST%"
    - key: "kuma_destination_service"
      value: "%KUMA_DESTINATION_SERVICE%"
    - key: "duration_ms"
      value: "%DURATION%"
    - key: "bytes_sent"
      value: "%BYTES_SENT%"
    - key: "bytes_received"
      value: "%BYTES_RECEIVED%"

HTTP configuration with default fields:

format:
  type: Json
  json:
    - key: "start_time"
      value: "%START_TIME%"
    - key: "kuma_mesh"
      value: "%KUMA_MESH%"
    - key: 'method'
      value: '"%REQ(:METHOD)%'
    - key: "path"
      value: "%REQ(X-ENVOY-ORIGINAL-PATH?:PATH)%"
    - key: 'protocol'
      value: '%PROTOCOL%'
    - key: "response_code"
      value: "%RESPONSE_CODE%"
    - key: "response_flags"
      value: "%RESPONSE_FLAGS%"
    - key: "bytes_received"
      value: "%BYTES_RECEIVED%"
    - key: "bytes_sent"
      value: "%BYTES_SENT%"
    - key: "duration_ms"
      value: "%DURATION%"
    - key: "upstream_service_time"
      value: "%RESP(X-ENVOY-UPSTREAM-SERVICE-TIME)%"
    - key: 'x_forwarded_for'
      value: '"%REQ(X-FORWARDED-FOR)%"'
    - key: 'user_agent'
      value: '"%REQ(USER-AGENT)%"'
    - key: 'request_id'
      value: '"%REQ(X-REQUEST-ID)%"'
    - key: 'authority'
      value: '"%REQ(:AUTHORITY)%"'
    - key: "kuma_source_service"
      value: "%KUMA_SOURCE_SERVICE%"
    - key: "kuma_destination_service"
      value: "%KUMA_DESTINATION_SERVICE%"
    - key: "kuma_source_address_without_port"
      value: "%KUMA_SOURCE_ADDRESS_WITHOUT_PORT%"
    - key: "upstream_host"
      value: "%UPSTREAM_HOST%"

Backends

A backend determines where the logs end up.

TCP

A TCP backend streams logs to a server via TCP protocol. You can configure a TCP backend with an address:

backends:
  - type: Tcp
    tcp:
      address: 127.0.0.1:5000

File

A file backend streams logs to a text file. You can configure a file backend with a path:

backends:
  - type: File
    file:
      path: /dev/stdout

OpenTelemetry

An OpenTelemetry (OTel) backend sends data to an OpenTelemetry server. You can configure an OpenTelemetry backend with an endpoint, attributes (which contain additional information about the log) and body (can be a string message, including multi-line, or it can be a structured data). Attributes and endpoints can use placeholders described in the format section.

backends:
  - type: OpenTelemetry
    openTelemetry:
      endpoint: otel-collector:4317
      body:
        kvlistValue:
          values:
            - key: "mesh"
              value:
                stringValue: "%KUMA_MESH%"
      attributes:
        - key: "start_time"
          value: "%START_TIME%"

Body

Body is of type any (defined here) and can be one of the following forms:

body:
  stringValue: "%KUMA_MESH%"

body:
  boolValue: true

body:
  intValue: 123

body:
  doubleValue: 1.2

body:
  bytesValue: aGVsbG8=

body:
  arrayValue:
    values:
      - stringValue: "%KUMA_MESH%"

body:
  kvlistValue:
    values:
      - key: "mesh"
        value:
          stringValue: "%KUMA_MESH%"

Examples

Log outgoing traffic from specific frontend version to a backend service

Kubernetes
Universal

I am using MeshService

apiVersion: kuma.io/v1alpha1
kind: MeshAccessLog
metadata:
  name: frontend-to-backend
  namespace: kuma-demo
  labels:
    kuma.io/mesh: default
spec:
  targetRef:
    kind: Dataplane
    labels:
      app: frontend
      version: canary
  to:
  - targetRef:
      kind: MeshService
      name: backend_kuma-demo_svc_8080
    default:
      backends:
      - type: File
        file:
          path: "/dev/stdout"

apiVersion: kuma.io/v1alpha1
kind: MeshAccessLog
metadata:
  name: frontend-to-backend
  namespace: kuma-demo
  labels:
    kuma.io/mesh: default
spec:
  targetRef:
    kind: Dataplane
    labels:
      app: frontend
      version: canary
  to:
  - targetRef:
      kind: MeshService
      name: backend
      namespace: kuma-demo
      sectionName: http
    default:
      backends:
      - type: File
        file:
          path: "/dev/stdout"

I am using MeshService

type: MeshAccessLog
name: frontend-to-backend
mesh: default
spec:
  targetRef:
    kind: Dataplane
    labels:
      app: frontend
      version: canary
  to:
  - targetRef:
      kind: MeshService
      name: backend
    default:
      backends:
      - type: File
        file:
          path: "/dev/stdout"

type: MeshAccessLog
name: frontend-to-backend
mesh: default
spec:
  targetRef:
    kind: Dataplane
    labels:
      app: frontend
      version: canary
  to:
  - targetRef:
      kind: MeshService
      name: backend
      sectionName: http
    default:
      backends:
      - type: File
        file:
          path: "/dev/stdout"

Logging to multiple backends

This configuration logs to three backends: TCP, file and OpenTelemetry.

        
          Kubernetes
        
      

        
          Universal
        
      

    
      apiVersion: kuma.io/v1alpha1
kind: MeshAccessLog
metadata:
  name: multiple-backends
  namespace: kuma-demo
  labels:
    kuma.io/mesh: default
spec:
  rules:
  - default:
      backends:
      - type: Tcp
        tcp:
          address: 127.0.0.1:5000
          format:
            type: Json
            json:
            - key: start_time
              value: "%START_TIME%"
      - type: File
        file:
          path: "/dev/stdout"
          format:
            type: Plain
            plain: "[%START_TIME%]"
      - type: OpenTelemetry
        openTelemetry:
          endpoint: otel-collector:4317
          body:
            kvlistValue: 
            values:
            - key: mesh
              value:
                stringValue: "%KUMA_MESH%"
          attributes:
          - key: start_time
            value: "%START_TIME%"

    
      type: MeshAccessLog
name: multiple-backends
mesh: default
spec:
  rules:
  - default:
      backends:
      - type: Tcp
        tcp:
          address: 127.0.0.1:5000
          format:
            type: Json
            json:
            - key: start_time
              value: "%START_TIME%"
      - type: File
        file:
          path: "/dev/stdout"
          format:
            type: Plain
            plain: "[%START_TIME%]"
      - type: OpenTelemetry
        openTelemetry:
          endpoint: otel-collector:4317
          body:
            kvlistValue: 
            values:
            - key: mesh
              value:
                stringValue: "%KUMA_MESH%"
          attributes:
          - key: start_time
            value: "%START_TIME%"

    
  

Log all incoming and outgoing traffic

For this use case we recommend creating two separate policies. One for incoming traffic:

        
          Kubernetes
        
      

        
          Universal
        
      

    
      apiVersion: kuma.io/v1alpha1
kind: MeshAccessLog
metadata:
  name: all-incoming-traffic
  namespace: kuma-demo
  labels:
    kuma.io/mesh: default
spec:
  rules:
  - default:
      backends:
      - type: File
        file:
          path: "/dev/stdout"

    
      type: MeshAccessLog
name: all-incoming-traffic
mesh: default
spec:
  rules:
  - default:
      backends:
      - type: File
        file:
          path: "/dev/stdout"

    
  

And one for outgoing traffic:

        
          Kubernetes
        
      

        
          Universal
        
      

    
      apiVersion: kuma.io/v1alpha1
kind: MeshAccessLog
metadata:
  name: all-outgoing-traffic
  namespace: kuma-demo
  labels:
    kuma.io/mesh: default
spec:
  to:
  - targetRef:
      kind: Mesh
    default:
      backends:
      - type: File
        file:
          path: "/dev/stdout"

    
      type: MeshAccessLog
name: all-outgoing-traffic
mesh: default
spec:
  to:
  - targetRef:
      kind: Mesh
    default:
      backends:
      - type: File
        file:
          path: "/dev/stdout"

    
  

Logging traffic going outside the Mesh

To target ExternalServices, use MeshService as the targetRef kind with name set to
the kuma.io/service value.

To target other non-mesh traffic, for example passthrough traffic, use Mesh as the targetRef kind. In this case, %KUMA_DESTINATION_SERVICE% is set to external.

Select a built-in gateway

You can select a built-in gateway using the kuma.io/service value. A current limitation is that traffic routed from a gateway to a service is logged by that gateway as having destination "*".

All policy options

Spec is the specification of the Kuma MeshAccessLog resource.

Type: object

Properties

from
- From list makes a match between clients and corresponding configurations
- Type: array
  - Items
  - Type: object
  - Properties
    - default required
      - Default is a configuration specific to the group of clients referenced in'targetRef'
      - Type: object
      - Properties
        
        backends
        
        Type: array
        
        Items
        
        Type: object
        
        Properties
        
        file
        
        FileBackend defines configuration for file based access logs
        
        Type: object
        
        Properties
        
        format
        
        Format of access logs. Placeholders available onhttps://www.envoyproxy.io/docs/envoy/latest/configuration/observability/access_log/usage#command-operators
        
        Type: object
        
        Properties
        
        json
        
        Type: array
        
        Items
        
        Type: object
        
        Properties
        
        key required
        
        Type: string
        
        value required
        
        Type: string
        
        omitEmptyValues
        
        Type: boolean
        
        Default: false
        
        plain
        
        Type: string
        
        type required
        
        Type: string
        
        The value is restricted to the following:
        
        "Plain"
        
        "Json"
        
        path required
        
        Path to a file that logs will be written to
        
        Type: string
        
        Length: ≥ 1
        
        openTelemetry
        
        Defines an OpenTelemetry logging backend.
        
        Type: object
        
        Properties
        
        attributes
        
        Attributes can contain placeholders available onhttps://www.envoyproxy.io/docs/envoy/latest/configuration/observability/access_log/usage#command-operators
        
        Type: array
        
        Items
        
        Type: object
        
        Properties
        
        key required
        
        Type: string
        
        value required
        
        Type: string
        
        body
        
        Body is a raw string or an OTLP any value as described athttps://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/logs/data-model.md#field-bodyIt can contain placeholders available onhttps://www.envoyproxy.io/docs/envoy/latest/configuration/observability/access_log/usage#command-operators
        
        endpoint required
        
        Endpoint of OpenTelemetry collector. An empty port defaults to 4317.
        
        Type: string
        
        Length: ≥ 1
        
        tcp
        
        TCPBackend defines a TCP logging backend.
        
        Type: object
        
        Properties
        
        address required
        
        Address of the TCP logging backend
        
        Type: string
        
        Length: ≥ 1
        
        format
        
        Format of access logs. Placeholders available onhttps://www.envoyproxy.io/docs/envoy/latest/configuration/observability/access_log/usage#command-operators
        
        Type: object
        
        Properties
        
        json
        
        Type: array
        
        Items
        
        Type: object
        
        Properties
        
        key required
        
        Type: string
        
        value required
        
        Type: string
        
        omitEmptyValues
        
        Type: boolean
        
        Default: false
        
        plain
        
        Type: string
        
        type required
        
        Type: string
        
        The value is restricted to the following:
        
        "Plain"
        
        "Json"
        
        type required
        
        Type: string
        
        The value is restricted to the following:
        
        "Tcp"
        
        "File"
        
        "OpenTelemetry"
    - targetRef required
      - TargetRef is a reference to the resource that represents a group ofclients.
      - Type: object
      - Properties
        
        kind required
        
        Kind of the referenced resource
        
        Type: string
        
        The value is restricted to the following:
        
        "Mesh"
        
        "MeshSubset"
        
        "MeshGateway"
        
        "MeshService"
        
        "MeshExternalService"
        
        "MeshMultiZoneService"
        
        "MeshServiceSubset"
        
        "MeshHTTPRoute"
        
        "Dataplane"
        
        labels
        
        Labels are used to select group of MeshServices that match labels. Either Labels orName and Namespace can be used.
        
        Type: object
        
        This schema accepts additional properties.
        
        Properties
        
        mesh
        
        Mesh is reserved for future use to identify cross mesh resources.
        
        Type: string
        
        name
        
        Name of the referenced resource. Can only be used with kinds: MeshService,MeshServiceSubset and MeshGatewayRoute
        
        Type: string
        
        namespace
        
        Namespace specifies the namespace of target resource. If empty only resources in policy namespacewill be targeted.
        
        Type: string
        
        proxyTypes
        
        ProxyTypes specifies the data plane types that are subject to the policy. When not specified,all data plane types are targeted by the policy.
        
        Type: array
        
        Items
        
        Type: string
        
        The value is restricted to the following:
        
        "Sidecar"
        
        "Gateway"
        
        sectionName
        
        SectionName is used to target specific section of resource.For example, you can target port from MeshService.ports[] by its name. Only traffic to this port will be affected.
        
        Type: string
        
        tags
        
        Tags used to select a subset of proxies by tags. Can only be used with kindsMeshSubset and MeshServiceSubset
        
        Type: object
        
        This schema accepts additional properties.
        
        Properties
rules
- Rules defines inbound access log configurations. Currently limited toselecting all inbound traffic, as L7 matching is not yet implemented.
- Type: array
  - Items
  - Type: object
  - Properties
    - default required
      - Default contains configuration of the inbound access logging
      - Type: object
      - Properties
        
        backends
        
        Type: array
        
        Items
        
        Type: object
        
        Properties
        
        file
        
        FileBackend defines configuration for file based access logs
        
        Type: object
        
        Properties
        
        format
        
        Format of access logs. Placeholders available onhttps://www.envoyproxy.io/docs/envoy/latest/configuration/observability/access_log/usage#command-operators
        
        Type: object
        
        Properties
        
        json
        
        Type: array
        
        Items
        
        Type: object
        
        Properties
        
        key required
        
        Type: string
        
        value required
        
        Type: string
        
        omitEmptyValues
        
        Type: boolean
        
        Default: false
        
        plain
        
        Type: string
        
        type required
        
        Type: string
        
        The value is restricted to the following:
        
        "Plain"
        
        "Json"
        
        path required
        
        Path to a file that logs will be written to
        
        Type: string
        
        Length: ≥ 1
        
        openTelemetry
        
        Defines an OpenTelemetry logging backend.
        
        Type: object
        
        Properties
        
        attributes
        
        Attributes can contain placeholders available onhttps://www.envoyproxy.io/docs/envoy/latest/configuration/observability/access_log/usage#command-operators
        
        Type: array
        
        Items
        
        Type: object
        
        Properties
        
        key required
        
        Type: string
        
        value required
        
        Type: string
        
        body
        
        Body is a raw string or an OTLP any value as described athttps://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/logs/data-model.md#field-bodyIt can contain placeholders available onhttps://www.envoyproxy.io/docs/envoy/latest/configuration/observability/access_log/usage#command-operators
        
        endpoint required
        
        Endpoint of OpenTelemetry collector. An empty port defaults to 4317.
        
        Type: string
        
        Length: ≥ 1
        
        tcp
        
        TCPBackend defines a TCP logging backend.
        
        Type: object
        
        Properties
        
        address required
        
        Address of the TCP logging backend
        
        Type: string
        
        Length: ≥ 1
        
        format
        
        Format of access logs. Placeholders available onhttps://www.envoyproxy.io/docs/envoy/latest/configuration/observability/access_log/usage#command-operators
        
        Type: object
        
        Properties
        
        json
        
        Type: array
        
        Items
        
        Type: object
        
        Properties
        
        key required
        
        Type: string
        
        value required
        
        Type: string
        
        omitEmptyValues
        
        Type: boolean
        
        Default: false
        
        plain
        
        Type: string
        
        type required
        
        Type: string
        
        The value is restricted to the following:
        
        "Plain"
        
        "Json"
        
        type required
        
        Type: string
        
        The value is restricted to the following:
        
        "Tcp"
        
        "File"
        
        "OpenTelemetry"
targetRef
- TargetRef is a reference to the resource the policy takes an effect on.The resource could be either a real store object or virtual resourcedefined in-place.
- Type: object
- Properties
  - kind required
    - Kind of the referenced resource
    - Type: string
    - The value is restricted to the following:
      1. "Mesh"
      2. "MeshSubset"
      3. "MeshGateway"
      4. "MeshService"
      5. "MeshExternalService"
      6. "MeshMultiZoneService"
      7. "MeshServiceSubset"
      8. "MeshHTTPRoute"
      9. "Dataplane"
  - labels
    - Labels are used to select group of MeshServices that match labels. Either Labels orName and Namespace can be used.
    - Type: object
    - This schema accepts additional properties.
    - Properties
  - mesh
    - Mesh is reserved for future use to identify cross mesh resources.
    - Type: string
  - name
    - Name of the referenced resource. Can only be used with kinds: MeshService,MeshServiceSubset and MeshGatewayRoute
    - Type: string
  - namespace
    - Namespace specifies the namespace of target resource. If empty only resources in policy namespacewill be targeted.
    - Type: string
  - proxyTypes
    - ProxyTypes specifies the data plane types that are subject to the policy. When not specified,all data plane types are targeted by the policy.
    - Type: array
      - Items
      - Type: string
      - The value is restricted to the following:
        
        "Sidecar"
        
        "Gateway"
  - sectionName
    - SectionName is used to target specific section of resource.For example, you can target port from MeshService.ports[] by its name. Only traffic to this port will be affected.
    - Type: string
  - tags
    - Tags used to select a subset of proxies by tags. Can only be used with kindsMeshSubset and MeshServiceSubset
    - Type: object
    - This schema accepts additional properties.
    - Properties
to
- To list makes a match between the consumed services and corresponding configurations
- Type: array
  - Items
  - Type: object
  - Properties
    - default required
      - Default is a configuration specific to the group of destinations referenced in'targetRef'
      - Type: object
      - Properties
        
        backends
        
        Type: array
        
        Items
        
        Type: object
        
        Properties
        
        file
        
        FileBackend defines configuration for file based access logs
        
        Type: object
        
        Properties
        
        format
        
        Format of access logs. Placeholders available onhttps://www.envoyproxy.io/docs/envoy/latest/configuration/observability/access_log/usage#command-operators
        
        Type: object
        
        Properties
        
        json
        
        Type: array
        
        Items
        
        Type: object
        
        Properties
        
        key required
        
        Type: string
        
        value required
        
        Type: string
        
        omitEmptyValues
        
        Type: boolean
        
        Default: false
        
        plain
        
        Type: string
        
        type required
        
        Type: string
        
        The value is restricted to the following:
        
        "Plain"
        
        "Json"
        
        path required
        
        Path to a file that logs will be written to
        
        Type: string
        
        Length: ≥ 1
        
        openTelemetry
        
        Defines an OpenTelemetry logging backend.
        
        Type: object
        
        Properties
        
        attributes
        
        Attributes can contain placeholders available onhttps://www.envoyproxy.io/docs/envoy/latest/configuration/observability/access_log/usage#command-operators
        
        Type: array
        
        Items
        
        Type: object
        
        Properties
        
        key required
        
        Type: string
        
        value required
        
        Type: string
        
        body
        
        Body is a raw string or an OTLP any value as described athttps://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/logs/data-model.md#field-bodyIt can contain placeholders available onhttps://www.envoyproxy.io/docs/envoy/latest/configuration/observability/access_log/usage#command-operators
        
        endpoint required
        
        Endpoint of OpenTelemetry collector. An empty port defaults to 4317.
        
        Type: string
        
        Length: ≥ 1
        
        tcp
        
        TCPBackend defines a TCP logging backend.
        
        Type: object
        
        Properties
        
        address required
        
        Address of the TCP logging backend
        
        Type: string
        
        Length: ≥ 1
        
        format
        
        Format of access logs. Placeholders available onhttps://www.envoyproxy.io/docs/envoy/latest/configuration/observability/access_log/usage#command-operators
        
        Type: object
        
        Properties
        
        json
        
        Type: array
        
        Items
        
        Type: object
        
        Properties
        
        key required
        
        Type: string
        
        value required
        
        Type: string
        
        omitEmptyValues
        
        Type: boolean
        
        Default: false
        
        plain
        
        Type: string
        
        type required
        
        Type: string
        
        The value is restricted to the following:
        
        "Plain"
        
        "Json"
        
        type required
        
        Type: string
        
        The value is restricted to the following:
        
        "Tcp"
        
        "File"
        
        "OpenTelemetry"
    - targetRef required
      - TargetRef is a reference to the resource that represents a group ofdestinations.
      - Type: object
      - Properties
        
        kind required
        
        Kind of the referenced resource
        
        Type: string
        
        The value is restricted to the following:
        
        "Mesh"
        
        "MeshSubset"
        
        "MeshGateway"
        
        "MeshService"
        
        "MeshExternalService"
        
        "MeshMultiZoneService"
        
        "MeshServiceSubset"
        
        "MeshHTTPRoute"
        
        "Dataplane"
        
        labels
        
        Labels are used to select group of MeshServices that match labels. Either Labels orName and Namespace can be used.
        
        Type: object
        
        This schema accepts additional properties.
        
        Properties
        
        mesh
        
        Mesh is reserved for future use to identify cross mesh resources.
        
        Type: string
        
        name
        
        Name of the referenced resource. Can only be used with kinds: MeshService,MeshServiceSubset and MeshGatewayRoute
        
        Type: string
        
        namespace
        
        Namespace specifies the namespace of target resource. If empty only resources in policy namespacewill be targeted.
        
        Type: string
        
        proxyTypes
        
        ProxyTypes specifies the data plane types that are subject to the policy. When not specified,all data plane types are targeted by the policy.
        
        Type: array
        
        Items
        
        Type: string
        
        The value is restricted to the following:
        
        "Sidecar"
        
        "Gateway"
        
        sectionName
        
        SectionName is used to target specific section of resource.For example, you can target port from MeshService.ports[] by its name. Only traffic to this port will be affected.
        
        Type: string
        
        tags
        
        Tags used to select a subset of proxies by tags. Can only be used with kindsMeshSubset and MeshServiceSubset
        
        Type: object
        
        This schema accepts additional properties.
        
        Properties

Generated with json-schema-md-doc Fri Apr 04 2025 06:41:29 GMT+0000 (Coordinated Universal Time)

MeshAccessLog

targetRef support matrix

Configuration

Format

Plain

JSON

Backends

TCP

File

OpenTelemetry

Body

Examples

Log outgoing traffic from specific frontend version to a backend service

Logging to multiple backends

Log all incoming and outgoing traffic

Logging traffic going outside the Mesh

Select a built-in gateway

All policy options

`targetRef` support matrix