Story Tag: debugging

Stories Tag: debugging

Kubelete Pod Pids Limit: How Does It Work? | by NHM Tanveer Hossain Khan | Oct, 2021 | Medium

admin 2 weeks ago in

I love to explore and understand how things work under the hood. I am sharing my findings of “ — pod-max-pids” option flag from the Kubernetes Kubelete. I have gone through all traces and the relevant code paths. It may seem a little cluttered. As the Kubelete documentation explains, the usages of ` — pod-max-pids` below – ` — pod-max-pids int Default: -1` Set the…

Debug Network Traffic in Kubernetes using a Sidecar | by Rakhitha Ranathunge | Sep, 2021 | Medium

admin 1 month ago in

Recently, I came across an issue where I wanted to debug the network traffic in an application in order to identify a database connectivity issue. This would have been a straightforward task if the application was running locally. I would only have to use either Wireshark to capture and analyze the traffic or use tcpdump in Linux based systems and analyze the dump. Alas, things…

Debugging Pods: The Basics. Pods are the smallest… | by Namya MR | Aug, 2021 | Medium

admin 2 months ago in

Pods are the smallest executable/deployable unit in Kubernetes. While building applications on the Kubernetes system, irrespective of whether you’re starting an architecture from scratch or if you’re including a new component, it’s natural to run into issues and not know what could be going wrong especially when you’re new to the system. In this article I list down a few techniques you could use to…

How to run Kubernetes without TLS for Debugging | by Eviatar Gerzi | Aug, 2021 | Medium

admin 2 months ago in

While researching Kubernetes components, you might want to check what happens inside the network. Kubernetes, by default, use encrypted communication. In my case, I wanted to see how the objects are being sent, especially between the API server to the kubelet agent in the worker nodes. In this post I will show you I configured my Kubernetes cluster to work without TLS, meaning, all the…

Kubernetes Networking Debugging with Java SpringBoot MicroServices | by Shahar Danus | Jun, 2021 | Medium

admin 4 months ago in

Hey everyone, Lets talk about Kubernetes networking issues. System & Architecture overview The issue we had So in the company I work for, we’re working with many external vendors. One day in April we started to see many communication errors to our most important external vendor on a consistent basis.How’s the error looks like: org.apache.http.NoHttpResponseException: api-xxxx.com:443 failed to respond It’s failing in 3–15ms from the…

Troubleshooting Kubernetes Clusters as a Developer with Komodor | by Kostis Kapelonis | Container Hub | May, 2021 | Medium

admin 5 months ago in

The container ecosystem is moving very fast and new tools designed specifically for Kubernetes clusters are introduced at a very fast pace. Even though several times a new tool is simply implementing a well-known mechanism (already present in the VM world) with a focus on containers, every once in a while we see tools that are designed from scratch rather than adapting a preexisting idea….

Setting up Distributed Tracing in Kubernetes with OpenTelemetry, Jaeger, and Ingress-NGINX | by Fernando Diaz | Apr, 2021 | Medium

admin 6 months ago in

In an age where companies like Netflix are running over 500 Microservices at once, it is important to quickly find out where exactly a failure or decrease in performance is coming from. It can be like finding a slightly discolored piece of hay in a haystack, unless something like Distributed Tracing is in place. Distributed Tracing is a way of profiling and monitoring applications. It…

Using Telepresence 2 for Kubernetes debugging and local development | by Kostis Kapelonis | Container Hub | Apr, 2021 |...

admin 6 months ago in

Telepresence 2 was recently released and (like Telepresence 1) it is a worthy addition to your Kubernetes tool chest. Telepresence is one of those tools you cannot live without after discovering how your daily workflow is improved. So what is Telepresence? It is too hard to describe all the functionalities of the tool in a single sentence, but for now I would describe it as…