Check out the session of Pantheon Onboarding Manager for Automation and Tooling Paul de Paula on “Securing Kubernetes Cluster Using Enterprise-Grade Secrets Management Known as Vault”.
There are a lot of ways on securing secrets/credentials. Distributing it though is a bit tricky and a pain to many engineers. One way to delivering it securely to multiple applications in your cluster with an enterprise-grade is by using Vault by HashiCorp. Paul will do a demo of an application that uses normal Kubernetes secrets and Vault secrets. Then, one can see the comparison.