Resources

Kubernetes Error Codes: SchemaError

Kubernetes is arguably the world’s leading container orchestration engine. When Kubernetes functions as expected, deploying containerized applications is quick, and upgrading and scaling applications is easy.

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Tutorials

Kubernetes Error Codes: Selector Does Not Match Template Labels

Kubernetes simplifies running scalable container deployments in production, but it's not always a pain-free experience. Kubernetes is a complex system, which means there are many potential points of failure.

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Tutorials

Kubernetes Error Codes: CrashLoopBackOff

DevOps professionals value Kubernetes for its functionality in containerized environments, but those benefits come with complexity. Correctly configuring your Kubernetes infrastructure can be challenging, and crashes and other issues at the pod level can be common.

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Tutorials

Kubernetes Troubleshooting - Fixing ValidationError

With Kubernetes becoming the gold standard for container orchestration, managing enterprise applications has become simpler than ever.

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Guides

Kubernetes Troubleshooting - Fixing Pod Has Unbound Immediate PersistentVolumeClaims Error

Setting up a single Kubernetes cluster on a single server is really easy from a maintenance point of view because you really do not need to worry about Persistent Volume(PV), Persistent Volume Claim(PVC), PODs deployed under different zones (ex. - eu-north-1, us-west-1 etc..)

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Guides

Kubernetes Troubleshooting - Fixing Error CreateContainerConfig

CreateContainerConfigError as the name suggests there is a problem with the Kubernetes container when it's going from Pending to Successful Running state. But to be precise you are missing Kubernetes Secrets in the deployment manifest.

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Tutorials

A quick guide to spot-readiness in Kubernetes

Applications are occasionally unavailable to serve traffic for a short time. For example, during startup, an application may need to load massive data or configuration files, or it may need to rely on external services. Naturally, you don't want to destroy the program in this situation, but you also don't like to send requests.

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Guides

Local authentication using passport in Node.js

This tutorial will show you how to utilize Passport with a MongoDB backend to perform local authentication (that is, signing in with a username and password). Please refer to this instruction if you're trying to install authentication using Facebook or GitHub.

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Guides

Kubernetes Troubleshooting - Fixing ImagePullBackOff State Error

The ImagePullBackOff is an error state that occurs when a Pod startup fails due to an inability to pull the image. In this article, we'll learn how to troubleshoot the ImagePullBackOff error and fix it.

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Tutorials

How to build a Helm plugin in minutes

Helm is a great addition to the Kubernetes ecosystem; it simplifies complex Kubernetes manifests by separating them into charts and values.

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Guides

A Deep Dive Into Kubernetes Schema Validation

Running schema validation tests is important, and the sooner the better. If all machines (local developers environment, CI, etc.) have access to your Kubernetes cluster, run `kubectl --dry-run` in server mode on every code change. If this isn’t possible, and you want to perform schema validation tests offline, use kubeconform together with a policy enforcement tool to have optimal validation coverage.

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Blog

A Solution to K8s Misconfigurations is Born

Datree is a CLI solution that supports Kubernetes owners in their roles, by preventing developers from making errors in K8s configurations that can cause clusters to fail in production. Our CLI solution is open source, enabling it to be supported by the K8s community.

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Guides

The Top Kubernetes Configuration Mistakes to Avoid

In this article we share 5 examples of Kubernetes misconfiguration mistakes. They were all fairly simple as far as mistakes go but did impact production.

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Use Cases

Perion Networks

Perion (NASDAQ: PERI) is an established leader in the increasingly competitive ad tech industry. To stay ahead, they needed to modernize the way their 400+ software engineers across 20 global offices deliver software. They started a huge initiative to transition from monoliths to micro-services and DevOps.

Global Giving

GlobalGiving is 501 non-profit organization based in the United States that provides a global crowdfunding platform for grassroots charitable projects. Since 2002, more than 800,000 donors on GlobalGiving have raised more than $340 million to support more than 20,000 projects in 170 countries.