Jump right into Kubernetes development with career-focused lessons and hands-on practice.

DevOps for Developers

Kubernetes is a powerful container management tool that's taking the world by storm. This detailed course will help you master it.

In this course, you'll start with the fundamentals of Kubernetes and what the main components of a cluster look like. You'll then learn how to use those components to build, test, deploy, and upgrade applications, as well as how to achieve state persistence once your application is deployed. You'll also learn how to secure your deployments and manage resources, which are crucial DevOps skills.

By the time you're done, you'll have a firm grasp on what Kubernetes is, as well as the skills to deploy your own clusters and applications with confidence.

A Practical Guide to Kubernetes

kubectl create secret \
    generic my-creds \
    --from-literal=username=jdoe \
    --from-literal=password=incognito


>**Note:** The major difference is that we specified the type of the Secret as `generic`. 

It could also be `docker-registry` or `tls`. We won’t explore those two. However, please note that the former can be used to provide `kubelet` with the credentials it needs to pull images from private registries. The latter is used for storing certificates.

In this chapter, we’ll focus on the `generic` type of Secrets that use the same syntax as ConfigMaps.

Just as with ConfigMaps, generic Secrets can use `--from-env-file`, `--from-file`, and `--from-literal` as sources. They can be mounted as files or transformed into environment variables. Since creating Secrets is similar to creating ConfigMaps, we won’t go into all the permutations we can do.

For now, we’ve created a Secret called `my-creds`, which holds two literal values.
# Working with Secrets
Let’s look at the Secrets we now have in the cluster:

Learn to create and explore generic Secrets.

Creating Generic Secrets

Creating Secrets