Containers

Category: Technical How-to

Diagram of Karpenter pods

Managing Pod Scheduling Constraints and Groupless Node Upgrades with Karpenter in Amazon EKS

Feb 2024: This blog has been updated for Karpenter version v0.33.1 and v1beta1 specification. About Karpenter Karpenter is an open-source node lifecycle management project built for Kubernetes. It observes the aggregate resource requests of unschedulable pods and makes decisions to launch new nodes and terminate them to reduce scheduling latencies and infrastructure costs sending commands to […]

Diagram showing the BotKube Architecture

Streaming Kubernetes Events in Slack

IT operations teams know that detecting an issue early on can help them avert downtime and cascading failures. Many teams stay on top of infrastructure events by using built-in alert management capabilities in monitoring tools such as Prometheus and Amazon CloudWatch. However, these alert rules are configured centrally in monitoring tools, and engineers often receive […]

Running Windows workloads on a private EKS cluster

Legacy applications in the automotive industry tend to run on Windows. Customers want to scale these workloads on Kubernetes alongside their Linux workloads. The automotive industry has a particularly high standard on security, and an Amazon Elastic Kubernetes Service (Amazon EKS) cluster with private endpoint is applicable to run their workloads. This blog post shows […]

Image showing architecture

How to route UDP traffic into Kubernetes

Since its release, Amazon Elastic Kubernetes Service (Amazon EKS) has been helping customers to run their applications reliably and at scale. UDP, or User Datagram Protocol, is a low-latency protocol that is ideal for workloads such as real-time streaming, online gaming, and IoT. The Network Load Balancer (NLB) is designed to handle tens of millions […]

How To Expose Multiple Applications on Amazon EKS Using a Single Application Load Balancer

Introduction Microservices architectures are default for cloud-native applications. Greater granular scalability, isolation of functions, and the possibility of having independent teams working on specific application functionalities are just some of the reasons that such an architectural pattern has been widely adopted. Together with the fact that new applications are being borne in the cloud, you […]

Deploy Python Application using AWS App Runner

It takes a village to design, develop, and host an application. It all starts with a business use case that gets translated to requirements and design and is then handed over to the developers for development. The developers create the application, test it in their local environments, and hand it over to the operations team […]

Continuous Delivery of Amazon EKS Clusters Using AWS CDK and CDK Pipelines

This blog is no longer up to date and we recommend reviewing the Amazon EKS Blueprints for CDK Pipeline SDK module which makes it easier to create infrastructure Continuous Delivery pipelines via AWS CodePipeline. Customers are looking for ways to automate the deployment of their Amazon EKS clusters across different versions, environments, accounts, and Regions. […]

Protect Kubernetes workloads from Apache Log4j vulnerabilities

Log4j is among the most popular and highly used logging frameworks in Java-based applications. On December 9, 2021, the world became aware of zero-day vulnerabilities CVE-2021-44228 and CVE-2021-45105 affecting the popular Apache package. Any attacker who can control log messages or log message parameters can execute arbitrary code loaded from malicious LDAP servers when message […]

Cloud Native CI/CD with Tekton and ArgoCD on AWS

Introduction With the ongoing popularity and adoption of container orchestrators such as Kubernetes, more and more cloud-native applications are built on top of it. Besides business applications, companies are migrating their infrastructure-related components such as CI/CD systems as well. But are those systems ready for such modern platforms? The answer depends. Clearly, most of the […]

GitOps model for provisioning and bootstrapping Amazon EKS clusters using Crossplane and Flux

In an earlier blog (Part 1 of the series), I discussed the adoption of the GitOps model as an efficient strategy for provisioning cloud provider-specific managed resources, such as, for example, Amazon S3 bucket and Amazon RDS instance, that application workloads depend on. The blog presented the details of implementing a use case where an Amazon […]