Sharing Secrets in a Kubernetes Cluster or Lessons Learned about Garbage Collection

Sharing Secrets in a Kubernetes Cluster or Lessons Learned about Garbage Collection

How to share efficiently and safely the multitude of secrets in a Kubernetes cluster? And maybe learn some Kubernetes inner workings along the way. Because you care deeply about securing your infrastructure, you issue a certificate for enabling TLS communications between your application backend and the ElasticSearch API.

How to share efficiently and safely the multitude of secrets in a Kubernetes cluster? And maybe learn some Kubernetes inner workings along the way.

Let’s consider the following situation: you’ve installed a brand new ElasticSearch in your Kubernetes cluster, maybe using Elastic Cloud on Kubernetes (ECK).

Because you care deeply about securing your infrastructure, you issue a certificate for enabling TLS communications between your application backend and the ElasticSearch API. It’s something that ECK does for you really well so let’s be grateful!

This es-http-certs-public looks especially promising and a quick inspection proves it contains the CA and public certificate of the new ES instance. Once we’ve found what we need, we want to use this secret in our applications deployed in multiple namespaces. Of course, these namespaces are distinct from the es namespace above where ES lives.

developer-tools cloud devops programming kubernetes

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