--- title: Log Entry description: A template that represents a single runtime log entry. location: https://istio.io/docs/reference/config/policy-and-telemetry/templates/logentry.html layout: protoc-gen-docs generator: protoc-gen-docs aliases: - /docs/reference/config/template/logentry.html number_of_entries: 1 ---

The `logentry` template represents an individual entry within a log.

Example config:

    apiVersion: "config.istio.io/v1alpha2"
    kind: instance
    metadata:
      name: accesslog
      namespace: istio-system
    spec:
      compiledTemplate: logentry
      params:
        severity: '"Default"'
        timestamp: request.time
        variables:
          sourceIp: source.ip | ip("0.0.0.0")
          destinationIp: destination.ip | ip("0.0.0.0")
          sourceUser: source.principal | ""
          method: request.method | ""
          url: request.path | ""
          protocol: request.scheme | "http"
          responseCode: response.code | 0
          responseSize: response.size | 0
          requestSize: request.size | 0
          latency: response.duration | "0ms"
        monitored_resource_type: '"UNSPECIFIED"'

## Template

The `logentry` template represents an individual entry within a log.

When writing the configuration, the value for the fields associated with this template can either be a literal or an expression. Please note that if the datatype of a field is not istio.policy.v1beta1.Value, then the expression’s inferred type must match the datatype of the field.

Field | Type | Description
--- | --- | ---
`variables` | `map<string, istio.policy.v1beta1.Value>` | Variables that are delivered for each log entry.
`timestamp` | `istio.policy.v1beta1.TimeStamp` | Timestamp is the time value for the log entry
`severity` | `string` | Severity indicates the importance of the log entry.
`monitoredResourceType` | `string` | Optional. An expression to compute the type of the monitored resource this log entry is being recorded on. If the logging backend supports monitored resources, these fields are used to populate that resource. Otherwise these fields will be ignored by the adapter.
`monitoredResourceDimensions` | `map<string, istio.policy.v1beta1.Value>` | Optional. A set of expressions that will form the dimensions of the monitored resource this log entry is being recorded on. If the logging backend supports monitored resources, these fields are used to populate that resource. Otherwise these fields will be ignored by the adapter.