AWS EKS Illustration: Production single cluster mode (#799)

rsts/howto/productionize/index.rst

@@ -10,3 +10,4 @@ How Do I productionize my Flyte cluster
    :name: howtoprovguidestoc
 
    production
+   production_eks

rsts/howto/productionize/production_eks.rst

@@ -0,0 +1,21 @@
+.. _production-eks:
+
+Using AWS EKS to host Flyte
+------------------------------
+
+Illustration
+*************
+
+.. note::
+
+   - Flyte needs a prefix in an AWS S3 bucket to store all its metadata. This is where the data about executions, workflows, tasks is stored
+     - this S3 bucket/prefix should be accessible to all FlytePropeller, FlyteAdmin, Datacatalog and running executions (user pods)
+   - FlyteAdmin can use any RDBMS database but we recommend Postgres. At scale we have used AWS Aurora
+   - Datacatalog also uses a postgres database similar to admin. They both could share the same physical instance, but prefer to have 2 logically separate databases
+   - If you want to use AWS IAM role for SeviceAccounts, then you have to manage the provisioning of the service account and providing it to Flyte at the time of execution
+   - For secrets, you can use Vault, Kube secrets etc, we are working on getting first class support for this
+
+.. image:: https://raw.githubusercontent.com/flyteorg/flyte/static-resources/img/core/flyte_single_cluster_eks.png
+    :alt: Illustration of setting up Flyte Cluster in a single AWS EKS (or any K8s cluster on AWS)
+
+