The Kubesploit January digest just dropped!

In this recap, you will find a curated collection of the best Kubernetes, security-related articles, tutorials, libraries and tools republished in January.

https://medium.com/kubesploit/kubesploit-digest-january-2023-ec6253e2f0b3

Validkube combines the best open-source tools to help ensure Kubernetes YAML best practices, hygiene & security.

More: https://github.com/komodorio/validkube

In this article, you will discuss a few strategies to manage secrets using GitOps:

1. Sealed Secrets
2. Argo CD Vault plugin
3. SOPS (Secrets OPerationS)
4. Vault Agent
5. Secrets Store CSI Driver
6. External Secrets
7. Secrets Management and the cloud

More: https://akuity.io/blog/how-to-manage-kubernetes-secrets-gitops

kubeval is a tool for validating a Kubernetes YAML or JSON configuration file.

It does so using schemas generated from the Kubernetes OpenAPI specification, and therefore can validate schemas for multiple versions of Kubernetes.

More: https://github.com/instrumenta/kubeval

Troubleshooting in Kubernetes can be a daunting task. In this article, you will learn how to diagnose issues in Pods, Services and Ingress.

More: https://learnk8s.io/troubleshooting-deployments

Don't miss this week's "Learn Kubernetes weekly" newsletter with stories on:

→ Scaling requests
→ Proactive scaling
→ Capacity & resource management
→ State of persistent storage
→ Bandwidth exhaustion

And more!

https://learnk8s.io/learn-kubernetes-weekly

This tutorial shows how you can leverage Pipy to enforce admission control decisions in Kubernetes clusters without modifying or recompiling any components.

Also, policies can be modified on the fly to satisfy changing operational requirements.

More: https://blog.flomesh.io/using-pipy-as-a-kubernetes-policy-engine-e70a23c8d54c

What if we need to block an action performed by cluster admins?

You can't do it with RBAC: it only allows for adding permissions, not taking them away.

Learn how you can use Kyverno to do so in this tutorial.

More: https://marcusnoble.co.uk/2022-01-20-restricting-cluster-admin-permissions

Auditing Kubernetes authorization can be a bit of a tricky task.

In this article, you will learn what techniques and tools you can use to identify, reassign and manage RBAC rules in your cluster.

More: https://raesene.github.io/blog/2022/08/14/auditing-rbac-redux

When you use peering in AKS, with the "default" AKS deployment, your complete cluster, including all pods, is completely open and addressable from your complete peered network.

Learn how to fix in this article.

More: https://blog.coffeeapplied.com/securing-aks-in-peered-virtual-networks-using-only-network-security-groups-nsgs-c43d6a215f32

What does it take to get a job as a Kubernetes engineer?

Do you need a Kubernetes certification to apply for a job?

What's the average salary for a Kubernetes engineer?

We analyzed 373 Kubernetes jobs from January to December of 2022 and found that:

- The average Kubernetes job pays €82,554 in Europe and $133,918 in North America.
- The majority of the job listings are for Senior DevOps Engineers.
- There is a drop in remote working! Companies are asking employees to go back to the office.
- If you are well-versed in AWS, CI/CD, and Python, you are eligible for more than 60% of the Kubernetes jobs.

You can read the full report here: https://kube.careers/kubernetes-trend-report-2022-q4

Kubernetes Network Policies are designed to control the network's traffic flow in and out of the cluster.

This article will teach you how to use Network Policies with the Calico CNI.

More: https://medium.com/@arbnair97/introduction-to-kubernetes-network-policy-and-calico-based-network-policy-675a7fa6b5dc

In this tutorial, you will learn how to verify container images with Kyverno using KMS, Cosign, and Workload Identity.

More: https://blog.sigstore.dev/how-to-verify-container-images-with-kyverno-using-kms-cosign-and-workload-identity-1e07d2b85061

This tutorial will teach you how to use Mitmproxy to solve untrusted certificate issues in pods.

More: https://xxradar.medium.com/mitmproxy-and-kubernetes-e897e903b1cb

In this article, you will discuss how Kubernetes security risks are often neglected or solved with inadequate tools due to their organization-specific, cutting-edge, or abstract nature.

More: https://macchaffee.com/blog/2022/k8s-under-documented-security-tips

This article covers how to inject secrets in Pods using Hashicorp Vault.

More: https://alexandre-vazquez.com/inject-secrets-in-pods-using-hashicorp-vault

Master Kubernetes with Learnk8s' Advanced Kubernetes workshops (starting in 3 weeks)!

What should you expect?

- Learn how to architect and design clusters from the ground up (in the cloud or on-prem).
- Explore the Kubernetes internal component and how the system is designed with resiliency in mind.
- Deep-dive into the networking components and observe the packets flowing into the cluster.
- Hands-on labs to test the theory with real-world scenarios!
- And more.

You can sign up here: https://learnk8s.io/online-advanced-march-2023

In Kubernetes, are there hidden costs to running many cluster nodes?

Yes, since not all CPU and memory in your Kubernetes nodes can be used to run Pods.

Learn the details in this article.

More: https://medium.com/@danielepolencic/reserved-cpu-and-memory-in-kubernetes-nodes-65aee1946afd

In this article, you'll learn two approaches for accessing Google APIs from GKE using Google service accounts.

Then, you'll compare it to a better method: using Workload Identity to access Google Cloud services in a secure and manageable manner.

More: https://chauvinhloi.medium.com/how-to-use-workload-identity-for-access-provisioning-of-kubernetes-services-on-google-cloud-7123f93c28b8

Popeye is a utility that scans live Kubernetes clusters and reports potential issues with deployed resources and configurations.

It detects misconfigurations and helps you to ensure that best practices are in place.

More: https://github.com/derailed/popeye

Here are the top 10 things you should focus on to protect EKS workloads against ransomware and all intrusions.

More: https://itnext.io/top-10-ways-to-protect-eks-workloads-from-ransomware-ae96d1c1e839