Fabian Lee : Software Engineer

Kubernetes: independent resolv.conf for CoreDNS with kubeadm

August 1, 2022
Categories: Kubernetes

The default setting for pod DNS resolution has CoreDNS use the settings from the underlying OS of the worker node. If your Kubernetes VMs are joined to multiple networks or search domains, this can cause unexpected results as well as performance issues. If you are using kubeadm, you can provide an independent resolv.conf file for … Kubernetes: independent resolv.conf for CoreDNS with kubeadm

Prometheus: installing kube-prometheus-stack on a kubeadm cluster

July 8, 2022
Categories: Kubernetes, Monitoring

The kube-prometheus-stack bundles the Prometheus Operator, monitors/rules, Grafana dashboards, and AlertManager needed to monitor a Kubernetes cluster. But there are customizations necessary to tailor the Helm installation for a Kubernetes cluster built using kubeadm. In this article, I will detail the necessary modifications to deploy a healthy monitoring stack on a kubeadm cluster.