Send Kong Logs to Splunk - Plugin

You can use the HTTP Log plugin to send Kong Gateway logs to Splunk.

Note: The following example uses Splunk 9.0.2. If you are using a different version of Splunk, check the Splunk documentation for the appropriate method.

Prerequisites

You have a Splunk authorization token.

Send raw text to HEC

To send raw text, use the /services/collector/raw Splunk endpoint.

For example, assuming that Splunk is running at https://example.splunkcloud.com:8088/ and its secure token is 123456, you can enable an HTTP Log plugin instance using the following configuration:

Enable on a service

Enable on a route

Enable on a consumer

Enable globally

Kong Admin API

Kubernetes

Declarative (YAML)

Konnect Terraform

Make the following request:

curl -X POST http://localhost:8001/services/{serviceName|Id}/plugins \
    --header "accept: application/json" \
    --header "Content-Type: application/json" \
    --data '
    {
  "name": "http-log",
  "config": {
    "headers": {
      "Authorization": "Splunk 123456"
    },
    "http_endpoint": "https://example.splunkcloud.com:8088/services/collector/raw",
    "method": "POST",
    "timeout": 3000,
    "retry_count": 1
  }
}
    '

Replace SERVICE_NAME|ID with the id or name of the service that this plugin configuration will target.

First, create a KongPlugin resource:

echo "
apiVersion: configuration.konghq.com/v1
kind: KongPlugin
metadata:
  name: http-log-example
plugin: http-log
config:
  headers:
    Authorization: Splunk 123456
  http_endpoint: https://example.splunkcloud.com:8088/services/collector/raw
  method: POST
  timeout: 3000
  retry_count: 1
" | kubectl apply -f -

Next, apply the KongPlugin resource to an ingress by annotating the service as follows:

kubectl annotate service SERVICE_NAME konghq.com/plugins=http-log-example

Replace SERVICE_NAME with the name of the service that this plugin configuration will target. You can see your available ingresses by running kubectl get service.

Note: The KongPlugin resource only needs to be defined once and can be applied to any service, consumer, or route in the namespace. If you want the plugin to be available cluster-wide, create the resource as a KongClusterPlugin instead of KongPlugin.

Add this section to your declarative configuration file:

plugins:
- name: http-log
  service: SERVICE_NAME|ID
  config:
    headers:
      Authorization: Splunk 123456
    http_endpoint: https://example.splunkcloud.com:8088/services/collector/raw
    method: POST
    timeout: 3000
    retry_count: 1

Replace SERVICE_NAME|ID with the id or name of the service that this plugin configuration will target.

Prerequisite: Configure your Personal Access Token

terraform {
  required_providers {
    konnect = {
      source  = "kong/konnect"
    }
  }
}

provider "konnect" {
  personal_access_token = "kpat_YOUR_TOKEN"
  server_url            = "https://us.api.konghq.com/"
}

Add the following to your Terraform configuration to create a Konnect Gateway Plugin:

resource "konnect_gateway_plugin_http_log" "my_http_log" {
  enabled = true

  config = {
    headers = {
      Authorization = "Splunk 123456"
    }
    http_endpoint = "https://example.splunkcloud.com:8088/services/collector/raw"
    method = "POST"
    timeout = 3000
    retry_count = 1
  }

  control_plane_id = konnect_gateway_control_plane.my_konnect_cp.id
  service = {
    id = konnect_gateway_service.my_service.id
  }
}

Kong Admin API

Kubernetes

Declarative (YAML)

Konnect Terraform

Make the following request:

curl -X POST http://localhost:8001/routes/{routeName|Id}/plugins \
    --header "accept: application/json" \
    --header "Content-Type: application/json" \
    --data '
    {
  "name": "http-log",
  "config": {
    "headers": {
      "Authorization": "Splunk 123456"
    },
    "http_endpoint": "https://example.splunkcloud.com:8088/services/collector/raw",
    "method": "POST",
    "timeout": 3000,
    "retry_count": 1
  }
}
    '

Replace ROUTE_NAME|ID with the id or name of the route that this plugin configuration will target.

First, create a KongPlugin resource:

echo "
apiVersion: configuration.konghq.com/v1
kind: KongPlugin
metadata:
  name: http-log-example
plugin: http-log
config:
  headers:
    Authorization: Splunk 123456
  http_endpoint: https://example.splunkcloud.com:8088/services/collector/raw
  method: POST
  timeout: 3000
  retry_count: 1
" | kubectl apply -f -

Next, apply the KongPlugin resource to an ingress by annotating the ingress as follows:

kubectl annotate ingress INGRESS_NAME konghq.com/plugins=http-log-example

Replace INGRESS_NAME with the name of the ingress that this plugin configuration will target. You can see your available ingresses by running kubectl get ingress.

Note: The KongPlugin resource only needs to be defined once and can be applied to any service, consumer, or route in the namespace. If you want the plugin to be available cluster-wide, create the resource as a KongClusterPlugin instead of KongPlugin.

Add this section to your declarative configuration file:

plugins:
- name: http-log
  route: ROUTE_NAME|ID
  config:
    headers:
      Authorization: Splunk 123456
    http_endpoint: https://example.splunkcloud.com:8088/services/collector/raw
    method: POST
    timeout: 3000
    retry_count: 1

Replace ROUTE_NAME|ID with the id or name of the route that this plugin configuration will target.

Prerequisite: Configure your Personal Access Token

terraform {
  required_providers {
    konnect = {
      source  = "kong/konnect"
    }
  }
}

provider "konnect" {
  personal_access_token = "kpat_YOUR_TOKEN"
  server_url            = "https://us.api.konghq.com/"
}

Add the following to your Terraform configuration to create a Konnect Gateway Plugin:

resource "konnect_gateway_plugin_http_log" "my_http_log" {
  enabled = true

  config = {
    headers = {
      Authorization = "Splunk 123456"
    }
    http_endpoint = "https://example.splunkcloud.com:8088/services/collector/raw"
    method = "POST"
    timeout = 3000
    retry_count = 1
  }

  control_plane_id = konnect_gateway_control_plane.my_konnect_cp.id
  route = {
    id = konnect_gateway_route.my_route.id
  }
}

Kong Admin API

Kubernetes

Declarative (YAML)

Konnect Terraform

Make the following request:

curl -X POST http://localhost:8001/consumers/{consumerName|Id}/plugins \
    --header "accept: application/json" \
    --header "Content-Type: application/json" \
    --data '
    {
  "name": "http-log",
  "config": {
    "headers": {
      "Authorization": "Splunk 123456"
    },
    "http_endpoint": "https://example.splunkcloud.com:8088/services/collector/raw",
    "method": "POST",
    "timeout": 3000,
    "retry_count": 1
  }
}
    '

Replace CONSUMER_NAME|ID with the id or name of the consumer group that this plugin configuration will target.

First, create a KongPlugin resource:

echo "
apiVersion: configuration.konghq.com/v1
kind: KongPlugin
metadata:
  name: http-log-example
plugin: http-log
config:
  headers:
    Authorization: Splunk 123456
  http_endpoint: https://example.splunkcloud.com:8088/services/collector/raw
  method: POST
  timeout: 3000
  retry_count: 1
" | kubectl apply -f -

Next, apply the KongPlugin resource to an ingress by annotating the KongConsumer object as follows:

kubectl annotate KongConsumer CONSUMER_NAME konghq.com/plugins=http-log-example

Replace CONSUMER_NAME with the name of the consumer that this plugin configuration will target. You can see your available consumers by running kubectl get KongConsumer.

To learn more about KongConsumer objects, see Provisioning Consumers and Credentials .

Note: The KongPlugin resource only needs to be defined once and can be applied to any service, consumer, or route in the namespace. If you want the plugin to be available cluster-wide, create the resource as a KongClusterPlugin instead of KongPlugin.

Add this section to your declarative configuration file:

plugins:
- name: http-log
  consumer: CONSUMER_NAME|ID
  config:
    headers:
      Authorization: Splunk 123456
    http_endpoint: https://example.splunkcloud.com:8088/services/collector/raw
    method: POST
    timeout: 3000
    retry_count: 1

Replace CONSUMER_NAME|ID with the id or name of the consumer that this plugin configuration will target.

Prerequisite: Configure your Personal Access Token

terraform {
  required_providers {
    konnect = {
      source  = "kong/konnect"
    }
  }
}

provider "konnect" {
  personal_access_token = "kpat_YOUR_TOKEN"
  server_url            = "https://us.api.konghq.com/"
}

Add the following to your Terraform configuration to create a Konnect Gateway Plugin:

resource "konnect_gateway_plugin_http_log" "my_http_log" {
  enabled = true

  config = {
    headers = {
      Authorization = "Splunk 123456"
    }
    http_endpoint = "https://example.splunkcloud.com:8088/services/collector/raw"
    method = "POST"
    timeout = 3000
    retry_count = 1
  }

  control_plane_id = konnect_gateway_control_plane.my_konnect_cp.id
  consumer = {
    id = konnect_gateway_consumer.my_consumer.id
  }
}

Kong Admin API

Kubernetes

Declarative (YAML)

Konnect Terraform

Make the following request:

curl -X POST http://localhost:8001/plugins/ \
    --header "accept: application/json" \
    --header "Content-Type: application/json" \
    --data '
    {
  "name": "http-log",
  "config": {
    "headers": {
      "Authorization": "Splunk 123456"
    },
    "http_endpoint": "https://example.splunkcloud.com:8088/services/collector/raw",
    "method": "POST",
    "timeout": 3000,
    "retry_count": 1
  }
}
    '

Create a KongClusterPlugin resource and label it as global:

apiVersion: configuration.konghq.com/v1
kind: KongClusterPlugin
metadata:
  name: <global-http-log>
  annotations:
    kubernetes.io/ingress.class: kong
  labels:
    global: "true"
config:
  headers:
    Authorization: Splunk 123456
  http_endpoint: https://example.splunkcloud.com:8088/services/collector/raw
  method: POST
  timeout: 3000
  retry_count: 1
plugin: http-log

Add a plugins entry in the declarative configuration file:

plugins:
- name: http-log
  config:
    headers:
      Authorization: Splunk 123456
    http_endpoint: https://example.splunkcloud.com:8088/services/collector/raw
    method: POST
    timeout: 3000
    retry_count: 1

Prerequisite: Configure your Personal Access Token

terraform {
  required_providers {
    konnect = {
      source  = "kong/konnect"
    }
  }
}

provider "konnect" {
  personal_access_token = "kpat_YOUR_TOKEN"
  server_url            = "https://us.api.konghq.com/"
}

Add the following to your Terraform configuration to create a Konnect Gateway Plugin:

resource "konnect_gateway_plugin_http_log" "my_http_log" {
  enabled = true

  config = {
    headers = {
      Authorization = "Splunk 123456"
    }
    http_endpoint = "https://example.splunkcloud.com:8088/services/collector/raw"
    method = "POST"
    timeout = 3000
    retry_count = 1
  }

  control_plane_id = konnect_gateway_control_plane.my_konnect_cp.id
}

Based on this configuration, the HTTP Log plugin sends the logs to https://example.splunkcloud.com:8088/services/collector/raw with a secure token.

Logs are sent as JSON objects. See the Log Format reference for details.

More information

Splunk documentation: Send raw text to HEC

Previous Basic config examples for HTTP Log

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