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KubeHound as a Service (KHaaS)

KHaaS enables you to use KubeHound in a distributive way. It is being splitted in 2 main categories:

  • The ingestor stack which includes the graphdb, storedb, UI and grpc endpoint.
  • The collector (the kubehound binary) which will dump and send the k8s resources to the KHaaS grpc endpoint.

Note

You need to deploy the data storage you want to use (AWS s3 in our example).

Deploying KHaaS - Ingestor stack

Docker deployment

To run the KubeHound as a Service with docker just use the following compose files:

cd ./deployments/kubehound
docker compose -f docker-compose.yaml -f docker-compose.release.yaml -f docker-compose.release.ingestor.yaml up -d

By default the endpoints are only exposed locally:

  • 127.0.0.1:9000 for ingestor endpoint.
  • 127.0.0.1:8888 for the UI.

Warning

You should change the default password by editing NOTEBOOK_PASSWORD=<your_password> in the docker-compose.yaml

k8s deployment

To run the KubeHound as a Service on Kubernetes just use the following helm files:

cd ./deployments/k8s
helm install khaas khaas --namespace khaas --create-namespace

If it succeeded you should see the deployment listed:

$ helm ls -A
NAME    NAMESPACE       REVISION        UPDATED                                 STATUS          CHART              APP VERSION
khaas   khaas           1               2024-07-30 19:04:37.0575 +0200 CEST     deployed        kubehound-0.0.1

Warning

This is an example to deploy KubeHound as a Service in k8s cluster, but you will need to adapt it to your own environment.

KubeHound collector

In order to use kubehound with KHaaS, you need to specify the api endpoint you want to use:

  • --khaas-server from the inline flags (by default 127.0.0.1:9000)

Since this is not likely to change in your environment, we advise you to use the local config file. By default KubeHound will look for ./kubehound.yaml or $HOME/.config/kubehound.yaml. As example here we set the default endpoint with disabled SSL.

ingestor:
    api: 
        endpoint: "127.0.0.1:9000"
        insecure: true

Note

You can use kubehound-reference.yaml as an example which list every options.

Dump and ingest

In order to use the collector with KHaaS you need to specify the cloud location you want to dump the k8s resources:

  • --bucket from the inline flags (i.e. s3://<your_bucket>). There is no default value for security reason.
  • --region from the inline flags (i.e. us-east-1) to set the region to retrieve the configuration (only for s3).

Warning

The kubehound binary needs to have push access to your cloud storage provider.

If you don't want to specify the bucket every time, you can set it up in your local config file. (./kubehound.yaml or $HOME/.config/kubehound.yaml).

ingestor:
   blob:
     # (i.e.: s3://<your-bucket>)
     bucket: ""
     # (i.e.: us-east-1)
     region: ""

Note

You can use kubehound-reference.yaml as an example which list every options.

Once everything is configured you just run the following, it will:

  • dump the k8s resources to the cloud storage provider.
  • send a grpc call to run the ingestion on the KHaaS grpc endpoint.
kubehound dump remote

or with the flags (for AWS s3):

kubehound dump remote --khaas-server 127.0.0.1:9000 --insecure --bucket s3://<your_bucket> --region  us-east-1

Note

The ingestion will dump the current cluster being setup, if you want to skip the interactive mode, just specify -y or --non-interactive

Manual ingestion

If you want to rehydrate (reingesting all the latest clusters dumps), you can use the ingest command to run it. 

kubehound ingest remote

or with the flags:

kubehound ingest remote --khaas-server 127.0.0.1:9000 --insecure

You can also specify a specific dump by using the --cluster and run_id flags.

kubehound ingest remote --cluster my-cluster-1 --run_id 01htdgjj34mcmrrksw4bjy2e94