In the fall of 2019, we had a vision: to produce the worlds best video and blog series about the little micro-optimizations and fun tricks you can make the Kubernetes CLI do.
This is that series. Silly Kubectl Tricks
Keeping all that Kubernetes syntax straight can be daunting. Is that property a string or can it be a number? Does that collection get set as a map or a list? Who knows? Kubernetes knows...
Do you use Alpine Linux images? Ubuntu? What versions of MySQL are you currently running (and where)? We can answer these questions and more with custom output formats for kubectl!
With RBAC, there are times, you'll wonder precisely which
permissions you, or a service account you use, have been
granted – that's when you should reach for kubectl auth
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Kubernetes has some fascinating ways of making our lives easier, of self-healing in the face of errors, crashes, and more, but sometimes, you just need to tail the log file.
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Logs are a great way of troubleshooting; they can provide a wealth of insight into the inner workings of a process. But what happens when pods crash?
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It's way too easy to drown in the ocean of objects that is a busy Kubernetes cluster. With this trick, you'll be able to find (and change!) precisely what you want to, when you want to.
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Sometimes life gives you lemons. And sometimes, a managed K8s provider gives you a full Kubeconfig. Why not merge them all together? Here's how.
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Our Kubernetes clusters have tons of metadata inside of them, just waiting to be extracted. In this post, James shows you how to grab what you're looking for, programmatically!
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Ever wanted to tweak the Kubernetes CLI, but don't know
someone on one of the core SIGs? This guide will show you how
to use the multi-call dispatch of kubectl to write your own
helper commands!
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If there's one thing that Kubernetes makes easy, it's creating resources – pods, deployments, volumes – before long you'll have tons of them lying around. Here's how to clean them up!
Kubectl exec and kubectl attach are two under-appreciated tools in the Kubernetes toolbox. Let us show you how to make the most of them in this new Silly Kubectl trick — from interacting with pods via attach, to running arbitrary commands via exec.
Got a neat kubectl trick to share? Have questions about Kubernetes, Docker, Containers, and Cloud stuff in general? We'd love to hear from you!