[Docs] Add the K8s agent set up document

docs/deployment/agents/index.md

@@ -33,6 +33,8 @@ If you are using a managed deployment of Flyte, you will need to contact your de
   - Configuring your Flyte deployment for the SnowFlake agent.
 * - {ref}`OpenAI Batch <deployment-agent-setup-openai-batch>`
   - Submit requests to OpenAI GPT models for asynchronous batch processing.
+* - {ref}`LinkedIn K8s Service Batch <deployment-agent-setup-k8sservice>`
+  - Configuring your Flyte deployment for the K8s service agent.
 ```
 
 ```{toctree}
@@ -49,4 +51,5 @@ sagemaker_inference
 sensor
 snowflake
 openai_batch
+k8sservice
 ```

docs/deployment/agents/k8sservice.rst

@@ -0,0 +1,179 @@
+.. _deployment-agent-setup-k8sservice:
+
+Kubernetes (K8s) Service Agent
+==============================
+
+The Kubernetes (K8s) Data Service Agent enables machine learning (ML) users to efficiently handle non-training tasks—such as data loading, caching, and processing—concurrently with training jobs in Kubernetes clusters.
+This capability is particularly valuable in deep learning applications, such as those in Graph Neural Networks (GNNs).
+
+This guide offers a comprehensive overview of setting up the K8s Data Service Agent within your Flyte deployment.
+
+Spin up a cluster
+-----------------
+
+.. tabs::
+
+  .. group-tab:: Flyte binary
+
+    You can spin up a demo cluster using the following command:
+
+    .. code-block:: bash
+
+      flytectl demo start
+
+    Or install Flyte using the :ref:`flyte-binary helm chart <deployment-deployment-cloud-simple>`.
+
+  .. group-tab:: Flyte core
+
+    If you've installed Flyte using the
+    `flyte-core helm chart <https://github.com/flyteorg/flyte/tree/master/charts/flyte-core>`__, please ensure:
+
+    * You have the correct kubeconfig and have selected the correct Kubernetes context.
+    * You have configured the correct flytectl settings in ``~/.flyte/config.yaml``.
+
+.. note::
+
+  Add the Flyte chart repo to Helm if you're installing via the Helm charts.
+
+  .. code-block:: bash
+
+    helm repo add flyteorg https://flyteorg.github.io/flyte
+
+Specify agent configuration
+----------------------------
+
+Enable the K8s service agent by adding the following config to the relevant YAML file(s):
+
+.. code-block:: yaml
+
+  tasks:
+    task-plugins:
+      enabled-plugins:
+        - agent-service
+      default-for-task-types:
+        - dataservicetask: agent-service
+
+.. code-block:: yaml
+
+  plugins:
+    agent-service:
+      agents:
+        k8sservice-agent:
+          endpoint: <AGENT_ENDPOINT>
+          insecure: true
+      agentForTaskTypes:
+      - dataservicetask: k8sservice-agent
+      - sensor: k8sservice-agent
+
+Substitute ``<AGENT_ENDPOINT>`` with the endpoint of your MMCloud agent.
+
+Setup the RBAC
+--------------
+
+The K8s Data Service Agent will create a StatefulSet and expose the Service endpoint for the StatefulSet pods.
+RBAC needs to be set up to allow the K8s Data Service Agent to perform CRUD operations on the StatefulSet and Service.
+
+The role `flyte-flyteagent-role` set up:
+
+.. code-block:: yaml
+
+  # Example of the role/binding set up for the data service to create/update/delete resources in the sandbox flyte namespace
+  apiVersion: rbac.authorization.k8s.io/v1
+  kind: Role
+  metadata:
+    name: flyte-flyteagent-role
+    namespace: flyte
+    labels:
+      app.kubernetes.io/name: flyteagent
+      app.kubernetes.io/instance: flyte
+  rules:
+  - apiGroups:
+        - apps
+    resources:
+      - statefulsets
+      - statefulsets/status
+      - statefulsets/scale
+      - statefulsets/finalizers
+    verbs:
+      - get
+      - list
+      - watch
+      - create
+      - update
+      - delete
+      - patch
+  - apiGroups:
+    - ""
+    resources:
+    - pods
+    - configmaps
+    - serviceaccounts
+    - secrets
+    - pods/exec
+    - pods/log
+    - pods/status
+    - services
+    verbs:
+    - '*'
+
+The binding `flyte-flyteagent-rolebinding` for the role `flyte-flyteagent-role`
+
+  .. code-block:: yaml
+
+    # Example of the role/binding set up for the data service to create/update/delete resources in the sandbox flyte namespace
+    apiVersion: rbac.authorization.k8s.io/v1
+    kind: RoleBinding
+    metadata:
+      name: flyte-flyteagent-rolebinding
+      namespace: flyte
+      labels:
+        app.kubernetes.io/name: flyteagent
+        app.kubernetes.io/instance: flyte
+    roleRef:
+      apiGroup: rbac.authorization.k8s.io
+      kind: Role
+      name: flyte-flyteagent-role
+    subjects:
+    - kind: ServiceAccount
+      name: flyteagent
+      namespace: flyte
+
+Upgrade the deployment
+----------------------
+
+.. tabs::
+
+  .. group-tab:: Flyte binary
+
+    .. tabs::
+
+      .. group-tab:: Demo cluster
+
+        .. code-block:: bash
+
+          kubectl rollout restart deployment flyte-sandbox -n flyte
+
+      .. group-tab:: Helm chart
+
+        .. code-block:: bash
+
+          helm upgrade <RELEASE_NAME> flyteorg/flyte-binary -n <YOUR_NAMESPACE> --values <YOUR_YAML_FILE>
+
+        Replace ``<RELEASE_NAME>`` with the name of your release (e.g., ``flyte-backend``),
+        ``<YOUR_NAMESPACE>`` with the name of your namespace (e.g., ``flyte``),
+        and ``<YOUR_YAML_FILE>`` with the name of your YAML file.
+
+  .. group-tab:: Flyte core
+
+    .. code-block::
+
+      helm upgrade <RELEASE_NAME> flyte/flyte-core -n <YOUR_NAMESPACE> --values values-override.yaml
+
+    Replace ``<RELEASE_NAME>`` with the name of your release (e.g., ``flyte``)
+    and ``<YOUR_NAMESPACE>`` with the name of your namespace (e.g., ``flyte``).
+
+Wait for the upgrade to complete. You can check the status of the deployment pods by running the following command:
+
+.. code-block::
+
+  kubectl get pods -n flyte