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Debugging and Monitoring DNS issues in Kubernetes
Dec 18, 2019

Debugging and Monitoring DNS issues in Kubernetes

DNS is a common cause for outages and incidents in Kubernetes clusters. For real-world stories, swing by Kubernetes Failure Stories. How do you debug and troubleshoot DNS issues? How do you know a problem is related to DNS? This guide provides a step by step tutorial on how to systematically troubleshoot DNS issues in Kubernetes clusters. We will be using [Hubble] to identify and inspect DNS issues as well as set up monitoring so we can locate DNS issues early on to react even before incidents occur.

How-To
Deep Dive into Cilium Multi-cluster
Mar 18, 2019

Deep Dive into Cilium Multi-cluster

This is a deep dive into ClusterMesh, Cilium's multi-cluster implementation.

How-To
Analyzing the CNI performance benchmark
Dec 03, 2018

Analyzing the CNI performance benchmark

This blog post documents the investigation we have done so far of what looked like a performance regression of HTTP/FTP traffic over pure TCP.

How-To
Cilium How-To: Install with Kubernetes on Ubuntu 18.04
Sep 26, 2018

Cilium How-To: Install with Kubernetes on Ubuntu 18.04

Cilium provides API-aware network security for cloud-native applications. Here's a How-To guide to get you going easily with Kubernetes and Cilium on Ubuntu 18.04 LTS.

How-To
Jul 17, 2018

Prometheus Metrics for Kubernetes Networking Using Cilium

In Kubernetes deployments, Prometheus is a popular monitoring system and time-series database for storing health and performance metrics of all the components. Equally popular is Grafana for plotting the metrics. In this post, we will provide steps to setup Prometheus and Grafana for understanding important Cilium metrics related to the security and health of service interactions in a Kubernetes cluster.

How-To
Open Source Elasticsearch Security: Using Cilium for Elasticsearch Access Control with No App/Container Changes
Jul 10, 2018

Open Source Elasticsearch Security: Using Cilium for Elasticsearch Access Control with No App/Container Changes

Elasticsearch is a dominanting open source platform for storing and analyzing all different types of data ranging from application logs, to user payment transactions and network audit logs.

How-To
Feb 07, 2018

Connectivity Troubleshooting with cilium-health

As we approach the upcoming 1.0 release, the Cilium community has been putting a lot of effort towards monitoring and troubleshooting. This has led to the development of several new tools in the project which we'll explore in this blog series. In this first part, we will cover **cilium-health**, a tool for troubleshooting intra-cluster connectivity issues.`

How-To
Jul 07, 2017

Tutorial: Applying HTTP security rules with Kubernetes

This blog post focuses on Layer 7 (HTTP) policy rules and how to apply them for both outgoing and incoming connections in the context of a Kubernetes cluster using a ThirdPartyResource. This is a first step in integrating L7 policies into the Kubernetes world, next steps will involve integration with Istio and the Envoy proxy. We will talk about our plans and the details how Cilium empowers both of them in one of the next blog posts.

How-To
May 05, 2017

Demo: May the Fourth be with you

In celebration of today's date, May 4th, we are posting our Star Wars demo of Cilium that we showed at CNCF/KubeCon in Berlin or DockerCon in Austin. You can either watch the video linked below which starts directly at the time the demo begins or you can jump to the transcript of the demo embedded in the blog post. May the fourth be with you.

How-To

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