As you probably know, Oh Dear is run by a small but capable team. One of the advantages of being small is that we can implement stuff pretty quickly: there’s no red tape, and our code base is very healthy. So, when our users have feature requests that make sense to add to Oh Dear, we can move fast. In the past month, we implemented two smallish feature requests for our DNS check we got through support. Here’s what our new DNS settings screens look like.
With the vast amount of data that is transmitted through the internet, it is essential to have a reliable connection. However, sometimes even the most stable connection can experience issues, one of which is the "DNS Server Not Responding" error. This error occurs when your device is unable to establish a connection with the DNS server, thereby depriving you of access to the internet.
In the world of the Internet, where every click, request, and data transfer relies on seamless connectivity, Domain Name System (DNS) issues can be the silent disruptors that bring the entire digital ecosystem to a halt. As organizations and individuals become increasingly dependent on the Internet for their day-to-day operations, understanding and troubleshooting DNS problems have become essential skills for IT professionals.
The Domain Name System (DNS) is the backbone of the internet. Proper DNS configuration is essential for seamless internet connectivity and plays a central role in enhancing website performance. In this guide, we will explore DNS configuration and its importance and provide step-by-step instructions for configuring DNS servers on various platforms, as well as client settings.
CoreDNS is an open source DNS server that can resolve requests for internet domain names and provide service discovery within a Kubernetes cluster. CoreDNS is the default DNS provider in Kubernetes as of v1.13. Though it can be used independently of Kubernetes, this series will focus on its role in providing Kubernetes service discovery, which simplifies cluster networking by enabling clients to access services using DNS names rather than IP addresses.
In Part 1 of this series, we looked at key metrics you should monitor to understand the performance of your CoreDNS servers. In this post, we’ll show you how to collect and visualize these metrics. We’ll also explore how CoreDNS logging works and show you how to collect CoreDNS logs to get even deeper visibility into your Deployment.
In Part 1 of this series, we introduced you to the key metrics you should be monitoring to ensure that you get optimal performance from CoreDNS running in your Kubernetes clusters. In Part 2, we showed you some tools you can use to monitor CoreDNS. In this post, we’ll show you how you can use Datadog to monitor metrics, logs, and traces from CoreDNS alongside telemetry from the rest of your cluster, including the infrastructure it runs on.
In Kubernetes, the Domain Name System (DNS) plays a crucial role in enabling service discovery for pods to locate and communicate with other services within the cluster. This function is essential for managing the dynamic nature of Kubernetes environments and ensuring that applications can operate seamlessly. For organizations migrating their workloads to Kubernetes, it’s also important to establish connectivity with services outside the cluster.