Introduction

The catalog component of our architecture uses a MySQL database as its storage backend. Currently, the catalog API is deployed with a database running as a Pod within the EKS cluster.

You can see this by running the following command:

~$kubectl -n catalog get pod

NAME                                READY   STATUS    RESTARTS        AGE

catalog-5d7fc9d8f-xm4hs             1/1     Running   0               14m

catalog-mysql-0                     1/1     Running   0               14m

In the output above, the Pod catalog-mysql-0 is our MySQL database. We can verify that the catalog application is using this by inspecting its environment:

~$kubectl -n catalog exec deployment/catalog -- env \

| grep RETAIL_CATALOG_PERSISTENCE_ENDPOINT

RETAIL_CATALOG_PERSISTENCE_ENDPOINT=catalog-mysql:3306

We want to migrate our application to use the fully managed Amazon RDS service in order to take advantage of its scale and reliability features.