Kubernetes

Monitoring large-scale, multi-cloud Kubernetes environments can be a hard task, especially when dealing with high-cardinality metrics and long-term data retention requirements. Traditional monitoring solutions often struggle to handle the sheer volume and complexity of metrics generated by distributed clusters across multiple cloud providers. This is where Thanos (Contrary to Marvel Thanos, this Thanos is an avenger) comes into play, providing a powerful and cost-effective solution for unlimited metrics storage and querying. ...

As Kubernetes administrators and developers, we’ve all heard the notion that pods can get evicted due to high CPU pressure on a node. But is this really true? Let’s explore this idea and put it to the test. 1 — Understanding Pod Eviction and CPU Management In Kubernetes, pod eviction is the process of removing one or more pods from a node in order to reclaim resources. This can happen for various reasons, such as: ...

Photo by frank mckenna on Unsplash Container Storage Interface (CSI) drivers play a crucial role in managing persistent storage for containerized applications. When working with Amazon Elastic Kubernetes Service (EKS), integrating CSI drivers becomes essential for efficient storage management. In this guide, we will delve into the details of CSI drivers on Amazon EKS and explore how to install and use them seamlessly with file systems. Understanding CSI Drivers: CSI is a standardized interface that allows storage vendors to develop plugins that can be used across various container orchestration platforms. With EKS, these drivers help manage the lifecycle of storage resources, enabling dynamic provisioning, attaching, and detaching volumes to and from pods ...

Kubernetes secrets are objects conceived to hold sensitive information such as passwords, tokens and certificates that can be used by pods without the need to include this sensitive information in the application code or container image. The pod can use these secrets in different ways, each of which is different and each method is made for a particular case, and that’s what we’re going to explore in the following article. ...

Photo by Sigmund on Unsplash In this tutorial, we will learn how to set up Prometheus rules and configure Alertmanager to send alerts to a Slack channel. Prometheus is a popular monitoring and alerting solution in the Kubernetes ecosystem, while Alertmanager handles alert management and routing. By integrating with Slack, you can receive real-time notifications for any issues or anomalies in your Kubernetes cluster. Let’s get started 👨🏻‍💻! Table of Contents: Prerequisites Setting Up Prometheus Rules Configuring Alertmanager Integrating with Slack Testing the Setup Conclusion 🚦Prerequisites: Access to a Kubernetes cluster Prometheus and Alertmanager installed in the cluster Basic knowledge of Kubernetes and YAML syntax 1 — Setting Up Prometheus Rules : Prometheus rules define conditions for generating alerts based on metrics collected by Prometheus. In this example, we will create a PrometheusRule resource named z4ck404-alerts in the monitoring namespace. ...