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ProxyConfiguration resource configuration reference

This page provides reference information for the ProxyConfigurations resource, which defines proxy behavior for traffic within the service mesh. The resource specifies both bootstrap and dynamic configurations for proxies.

This custom resource definition (CRD) describes a resource related to the Kubernetes GAMMA initiative that requires the v2 catalog API. It is not compatible with the v1 catalog API. For more information about GAMMA resources, refer to the Kubernetes Gateway API documentation.

Configuration model

The following list outlines field hierarchy, language-specific data types, and requirements in a ProxyConfiguration CRD. Click on a property name to view additional details, including default values.

Complete configuration

When every field is defined, an ProxyConfigurations CRD has the following form:

apiVersion: mesh.consul.hashicorp.com/v2beta1        # required 
kind: ProxyConfiguration                             # required
metadata:
  name: <crdName>
  namespace: <namespace>
spec: 
  workloads:                                         # required
    filter: "Service.Meta.version == v1"
    names: ["api", "admin"]
    prefixes: ["<pre>", "<fix>"]
  bootstrapConfig: 
    dogstatsdUrl: <udp://127.0.0.1:8125>
    overrideJsonTpl: <escapeHatchTemplate>
    prometheusBindAddr: <0.0.0.0>
    readyBindAddr: <ip:port>
    staticClustersJson: <jsonObject>
    staticListenersJson: <jsonObject>
    statsBindAddr: <0.0.0.0>
    statsConfigJson: <jsonObject>
    statsFlushInterval: 5000ms
    statsSinkJson: <jsonObject>
    statsTags:
      - <customTag>
    statsdUrl: <udp://127.0.0.1:8125>
    telemetryCollectorBindSocketDir: <path/to/directory>
    tracingConfigJson: <jsonObject>
  dynamicConfig:
    accessLogs:
      enabled: false
      disableListenerLogs: false
      jsonFormat: <jsonObject>
      path: <log/output/path>
      textFormat: <customFormatString>
      type: <LOG_SINK_TYPE_DEFAULT>
    exposeConfig:
      exposePaths:
        listenerPort: 42
        localPathPort: 4242
        path: </metrics>
        protocol: <EXPOSE_PATH_PROTOCOL_HTTP>
      inboundConnections:
        balanceInboundConnections: <exact_balance>
        maxInboundConnections: 1024
    listenerTracingJson: <jsonObject>
    localClusterJson: <jsonObject>
    localConnection:
      connectTimeout: <1s>
      requestTimeout: <1s>
    meshGatewayMode: <MESH_GATEWAY_MODE_LOCAL>
    mode: <PROXY_MODE_TRANSPARENT>
    publicListenerJson: <jsonObject>
    transparentProxy:
      dialedDirectly: false
      outboundListenerPort: 15001

Specification

This section provides details about the fields you can configure in the ProxyConfiguration custom resource definition (CRD).

apiVersion

Specifies the version of the Consul API for integrating with Kubernetes. The value must be mesh.consul.hashicorp.com/v2beta1.

Values

  • Default: None
  • This field is required.
  • String value that must be set to mesh.consul.hashicorp.com/v2beta1.

kind

Specifies the type of CRD to implement. Must be set to ProxyConfiguration.

Values

  • Default: None
  • This field is required.
  • Data type: String value that must be set to ProxyConfiguration.

metadata

Map that contains an arbitrary name for the CRD and the namespace it applies to.

Values

  • Default: None
  • Data type: Map

metadata.name

Specifies a name for the CRD. The name is metadata that you can use to reference the resource when performing Consul operations, such as using the consul resource command. Refer to consul resource for more information.

Values

  • Default: None
  • This field is required.
  • Data type: String

metadata.namespace Enterprise

Specifies the namespace that the proxy configuration applies to. Refer to namespaces for more information.

Values

  • Default: None
  • Data type: String

spec

Map that contains the details about the ProxyConfiguration CRD. The apiVersion, kind, and metadata fields are siblings of the spec field. All other configurations are children.

Values

  • Default: None
  • This field is required.
  • Data type: Map

spec.workloads

Specifies the workloads that the proxy configuration applies to. You can select workloads by name, prefix, or by using a filter expression.

Values

  • Default: None

  • This field is required.

  • Data type: Map that can contain the following parameters:

    ParameterDescriptionData typeDefault
    filterSpecifies an expression that filters workloads. For more information about creating and using expressions to filter, refer to filtering.StringNone
    namesSpecifies one or more names of workloads the proxy configuration applies to.Array of stringsNone
    prefixesSpecifies one or more prefixes. Proxy configurations apply to workloads with one of the prefixes.Array of stringsNone

spec.bootstrapConfig

Specifies initial bootstrap settings for the Envoy proxy, as well as proxy configuration settings that require the proxy to restart when applied. For more information, refer to Envoy proxy bootstrap configuration.

Values

  • Default: None
  • Data type: Map

spec.bootstrapConfig.dogstatsdUrl

Specifies a URL that identifies a DataDog DogStatsD listener. Envoy sends metrics to this listener.

Format the URL as udp://ip:port or unix://uds/path. For example, udp://127.0.0.1:8125 configures a local UDP DogStatsD listener for every host. TCP is not supported.

The UDP URL must use an IP address. DNS names are not supported.

For more information about configuring a UNIX domain socket with DogStatsD, refer to the DataDog documentation.

Values

  • Default: None
  • Data type: String

spec.bootstrapConfig.overrideJsonTpl

Warning

This field offers complete control of the proxy's bootstrap. Be aware that major deviations from the default template may break Consul's ability to correctly manage the proxy or enforce its security model.

Specifies a template in Go template syntax to use in place of the default template when generating the bootstrap configuration using the consul connect envoy command. For information about the variables Consul can interpolate in the template, refer to the documentation in bootstrap_tpl.go.

Refer to Envoy proxy escape-hatch overrides for more information.

Values

  • Default: None
  • Data type: String

spec.bootstrapConfig.prometheusBindAddr

Configures the proxy to expose a Prometheus metrics endpoint to the public network. Format the endpoint as ip:port. The port and IP and port combination must be free within the network namespace where the proxy runs. The IP 0.0.0.0 binds to all available interfaces or a pod IP address if supported by your existing network settings.

Values

  • Default: None
  • Data type: String

spec.bootstrapConfig.readyBindAddr

Specifies the location to configure the proxy's readiness probe. Format as ip:port.

By default, the proxy does not have a readiness probe configured on it.

Values

  • Default: None
  • Data type: String

spec.bootstrapConfig.staticClustersJson

Specifies one or more Envoy clusters to append to the array of static clusters in the bootstrap configuration.

This field enables you to add custom clusters, such as tracing sinks, to the bootstrap configuration. In order to configure a single cluster, specify a single JSON object with the cluster details.

Refer to Envoy proxy advanced bootstrap options for more information and examples.

Values

  • Default: None
  • Data type: String

spec.bootstrapConfig.staticListenersJson

Specifies one or more Envoy listeners to append to the array of static listeners definitions.

You can use this field to set up limited access that bypasses the service mesh's mTLS or authorization for health checks or metrics.

Refer to Envoy proxy advanced bootstrap options for more information and examples.

Values

  • Default: None
  • Data type: String

spec.bootstrapConfig.statsBindAddr

Specifies that the proxy should expose the /stats prefix to the public network at the ip:port provided. The IP and port combination must be free within the network namespace where the proxy runs. The IP 0.0.0.0 binds to all available interfaces or a pod IP address if supported by your existing network settings.

Values

  • Default: None
  • Data type: String

spec.bootstrapConfig.statsConfigJson

Specifies a complete stats config.

When provided, this field overrides spec.bootstrapConfig.statsTags and enables full control over dynamic tag replacements.

Refer to Envoy proxy advanced bootstrap options for more information and examples.

Values

  • Default: None
  • Data type: String

spec.bootstrapConfig.statsFlushInterval

Configures Envoy's stats_flush_interval, which measures the length of the interval between stats sink flushes.

Values

  • Default: None
  • Data type: String

spec.bootstrapConfig.statsSinkJson

Specifies one or more stats sinks to append to sinks defined using spec.bootstrapConfig.statsdUrl or spec.bootstrapConfig.dogstatsdUrl.

Refer to Envoy proxy advanced bootstrap options for more information and examples.

Values

  • Default: None
  • Data type: String

spec.bootstrapConfig.statsTags

Specifies one or more static tags to add to all metrics produced by the proxy.

Values

  • Default: None
  • Data type: Array of strings

spec.bootstrapConfig.statsdUrl

Specifies a URL that identifies a StatsD listener. Envoy sends metrics to this listener.

Format the URL as udp://ip:port. For example, udp://127.0.0.1:8125 configures a local StatsD listener for every host. TCP is not supported.

The URL must use an IP address. DNS names are not supported.

Values

  • Default: None
  • Data type: String

spec.bootstrapConfig.telemetryCollectorBindSocketDir

Specifies the directory of the Unix socket Envoy sends metrics to so that the Consul telemetry collector can collect them.

The socket is not configured by default.

Values

  • Default: None
  • Data type: String

spec.bootstrapConfig.tracingConfigJson

Specifies a configuration for an external tracing provider as described in the Envoy documentation. Most tracing providers also require adding static clusters to define the endpoints to send tracing data to.

Refer to Envoy proxy advanced bootstrap options for more information and examples.

Values

  • Default: None
  • Data type: String

spec.dynamicConfig

Specifies configuration settings for the Envoy proxy that are applied without restarting the proxy. For more information, refer to Envoy proxy dynamic configuration.

Values

  • Default: None
  • Data type: Map

spec.dynamicConfig.accessLogs

Specifies the format and output for the proxy's access logs.

Values

  • Default: None
  • Data type: Map

spec.dynamicConfig.accessLogs.enabled

When set to true, this parameter enables access logs for the proxy.

Values

  • Default: false
  • Data type: Boolean

spec.dynamicConfig.accessLogs.usableListenerLogs

When set to true, this parameter disables listener logs for connections that the proxy rejected because they did not have a matching listener filter.

Values

  • Default: false
  • Data type: Boolean

spec.dynamicConfig.accessLogs.jsonFormat

Specifies a JSON format dictionary for the access logs. Refer to format dictionaries in the Envoy documentation for more information.

When this field is specified, you cannot also specify spec.dynamicConfig.accessLogs.textFormat in the same configuration.

spec.dynamicConfig.accessLogs.path

Specifies a file output path for the access logs.

Values

  • Default: None
  • Data type: String

spec.dynamicConfig.accessLogs.textFormat

Specifies a format string for the access logs. Refer to default format string in the Envoy documentation for more information.

When this field is specified, you cannot also specify spec.dynamicConfig.accessLogs.jsonFormat in the same configuration.

Values

  • Default: None
  • Data type: String

spec.dynamicConfig.accessLogs.type

Specifies the output type for the access logs.

Values

spec.dynamicConfig.exposeConfig

Specifies configurations for exposing the proxy.

Refer to expose paths configuration reference for more information.

Values

  • Default: None
  • Data type: Map

spec.dynamicConfig.exposeConfig.exposePaths

Specifies a configuration for exposing an HTTP path through the proxy.

Refer to expose paths configuration reference for more information.

Values

  • Default: None
  • Data type: Map

spec.dynamicConfig.exposeConfig.exposePaths.listenerPort

Specifies the port where the proxy listens for connections. This port must be available for the listener to be set up. If the port is not free, Envoy does not expose a listener for the path but the proxy registration does not fail.

Values

  • Default: None
  • Data type: Integer

spec.dynamicConfig.exposeConfig.exposePaths.localPathPort

Specifies the port where the local service is listening for connections to the path.

Values

  • Default: None
  • Data type: Integer

spec.dynamicConfig.exposeConfig.exposePaths.path

The HTTP path to expose. Prefix the path with a slash. For example, /metrics.

Values

  • Default: None
  • Data type: String

spec.dynamicConfig.exposeConfig.exposePaths.protocol

Specifies the protocol of the listener, either HTTP or HTTP/2. For gRPC, use HTTP/2.

Values

spec.dynamicConfig.inboundConnections

Specifies configurations for how the proxy handles inbound connections.

Values

  • Default: None
  • Data type: Map

spec.dynamicConfig.inboundConnections.balanceInboundConnections

Specifies the strategy for balancing inbound connections across Envoy worker threads. Consul's service mesh Envoy integration supports the following values:

ValueDescription
Empty stringInbound connections are not balanced.
exact_balanceBalances inbound connections with Envoy's Exact Balance Strategy.

Values

  • Default: ""
  • Data type: String

spec.dynamicConfig.inboundConnections.maxInboundConnections

Specifies the maximum number of concurrent inbound connections to the local application instance. If not specified, inherits the Envoy default of 1024.

Values

  • Default: 1024
  • Data type: Integer

spec.dynamicConfig.listenerTracingJson

Specifies a tracing configuration to be inserted in the proxy's public and upstreams listeners. Refer to the Envoy documentation for more information.

Values

  • Default: None
  • Data type: String

spec.dynamicConfig.localClusterJson

Specifies a complete Envoy cluster to be delivered in place of the local application cluster. Use this field to customize timeouts, rate limits, and load balancing strategy.

Refer to cluster configuration in the Envoy documentation for more information.

Values

  • Default: None
  • Data type: String

spec.dynamicConfig.localConnection

Specifies timeout settings for the proxy's connection to the local application. Apply settings separately for each port.

Specify this field as a map containing a key/value. The map keys correspond to port names on the workload. The value contains this parameter's sub-fields.

Values

  • Default: None
  • Data type: Map

spec.dynamicConfig.localConnection.connectTimeout

Specifies the length of time the proxy is allowed to attempt connections to the local application instance before timing out.

This field accepts a string indicating the number of seconds. For example, indicate five seconds with 5s and five milliseconds with 0.005s.

Values

  • Default: None
  • Data type: String

spec.dynamicConfig.localConnection.requestTimeout

Specifies the length of time the proxy is allowed to attempt HTTP requests to the local application instance. Applies to HTTP-based protocols only.

This field accepts a string indicating the number of seconds. For example, indicate five seconds with 5s and five milliseconds with 0.005s.

Values

  • Default: None
  • Data type: String

spec.dynamicConfig.meshGatewayMode

Specifies the proxy's mode of operation for resolving upstreams in remote datacenter destinations. Refer to Mesh gateway configuration reference for more information.

Values

spec.dynamicConfig.mode

Configures the proxy to operate in transparent, direct, or default mode. Refer to proxy modes for more information.

Values

spec.dynamicConfig.publicListenerJson

Specifies a complete Envoy listener for Consul to deliver in place of the main public listener that the proxy uses to accept inbound connections. Refer to escape-hatch overrides for more information

Values

  • Default: None
  • Data type: String

spec.dynamicConfig.transparentProxy

Specifies additional configurations for operating proxies in transparent proxy mode. Refer to transparent proxy configuration reference for more information.

Values

  • Default: None
  • Data type: Map

spec.dynamicConfig.transparentProxy.dialedDirectly

Determines whether this proxy instance's IP address can be dialed directly by transparent proxies. Transparent proxies typically dial upstreams using the virtual tagged address, which load balances across instances. A database cluster with a leader is an example where dialing individual instances can be helpful.

Values

  • Default: false
  • Data type: Boolean

spec.dynamicConfig.transparentProxy.outboundListenerPort

Specifies the port the proxy listens on for outbound traffic to capture and redirect.

Values

  • Default: 15001
  • Data type: Integer

Examples

The following examples demonstrate common ProxyConfiguration CRD configuration patterns for specific use cases.

Set a timeout on a subset of proxies

The following example configures sidecar proxies scheduled with workloads whose names begin with static-server-. When these workloads attempt connections with the local web application, both requests and responses time out after 123 second.

apiVersion: mesh.consul.hashicorp.com/v2beta1
kind: ProxyConfiguration
metadata:
  name: static-server-override-one
spec:
  workloads:
    prefixes:
    - "static-server-"
  bootstrapConfig:
    statsBindAddr: "127.0.0.1:6666"
  dynamicConfig:
    # Only the web port should be enabled using the TPs
    localConnection:
      web:
        connectTimeout: "123s" # This ALWAYS has to end in 's'. If you want ms, you need to use "0.123s"
        requestTimeout: "123s"