https://devopstales.github.io/kubernetes/ Recent content in Kubernetes on DevOpsTales Hugo -- gohugo.io en Wed, 22 Apr 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/kube-ovn-egress-gateway/ Wed, 08 Apr 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/kube-ovn-egress-gateway/ Kube-OVN is an open source Kubernetes CNI based on Open vSwitch that provides enterprise-grade networking features including Egress Gateway and Floating IP - completely free and open source. This post explores Kube-OVN’s egress capabilities as another robust open source alternative. https://devopstales.github.io/kubernetes/antrea-egress-gateway/ Sun, 05 Apr 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/antrea-egress-gateway/ Antrea is an open source Kubernetes CNI based on Open vSwitch that provides advanced networking features including Egress Gateway - completely free and open source. This post explores Antrea’s egress capabilities as a true open source alternative. https://devopstales.github.io/kubernetes/cilium-egress-gateway/ Thu, 02 Apr 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/cilium-egress-gateway/ Controlling outbound traffic from your Kubernetes cluster is critical for security, compliance, and audit requirements. This post covers Cilium Egress Gateway - a powerful open source solution built on eBPF. https://devopstales.github.io/kubernetes/startup-cpu-boost-kubernetes/ Mon, 30 Mar 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/startup-cpu-boost-kubernetes/ Learn how to accelerate Java and other resource-heavy application startups in Kubernetes using In-Place Pod Resize and the Kube Startup CPU Boost controller—without permanent over-provisioning. https://devopstales.github.io/kubernetes/istio-ingress-egress-gateway/ Mon, 30 Mar 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/istio-ingress-egress-gateway/ Istio provides a comprehensive service mesh solution with built-in ingress and egress gateway capabilities. This post explores how to leverage Istio’s gateway resources for controlling both inbound and outbound traffic in your Kubernetes cluster. https://devopstales.github.io/kubernetes/kubevpn-cloud-native-development/ Sun, 29 Mar 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/kubevpn-cloud-native-development/ Developing applications for Kubernetes often means constantly deploying code to remote clusters or mocking services locally. KubeVPN bridges this gap by connecting your local machine directly to your Kubernetes cluster network, enabling true cloud-native development without the deployment overhead. https://devopstales.github.io/kubernetes/multus/ Sun, 22 Mar 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/multus/ Multus CNI enables attaching multiple network interfaces to Kubernetes pods, essential for service mesh, security isolation, and high-performance networking. This updated guide for 2026 covers Multus 4.0+, Kubernetes 1.28+, and modern CNI plugins. https://devopstales.github.io/kubernetes/backup-and-retore-prometheus/ Wed, 18 Mar 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/backup-and-retore-prometheus/ Backing up Prometheus is critical for preserving your monitoring history and metrics data. This updated guide for 2026 covers modern backup strategies using the Prometheus Admin API, Velero, and volume snapshots in Kubernetes environments with prometheus-operator. https://devopstales.github.io/kubernetes/k8s-cert/ Sun, 08 Mar 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-cert/ In this post I will show you how you can rotate your Kubernetes Engine Certificates. https://devopstales.github.io/kubernetes/k8s-security/ Fri, 06 Mar 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-security/ Kubernetes offers rich configuration options, but defaults are usually the least secure. Most sysadmins don’t know how to secure a Kubernetes cluster. So this is my Best Practice list for keeping Kubernetes Clusters Secure. https://devopstales.github.io/kubernetes/k8s-rbac/ Thu, 05 Mar 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-rbac/ In this post I will show you how you can use RBAC in kubernetes. https://devopstales.github.io/kubernetes/best-k8s-dashboards-2026/ Mon, 02 Mar 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/best-k8s-dashboards-2026/ With the official Kubernetes Dashboard being deprecated and moved to the retired projects, finding a reliable, feature-rich dashboard for your Kubernetes clusters has become more important than ever. In 2026, several excellent alternatives have emerged. This post reviews the top Kubernetes dashboards available today. https://devopstales.github.io/kubernetes/fluxcd-operator-migration-gitlab/ Mon, 02 Mar 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/fluxcd-operator-migration-gitlab/ FluxCD Operator brings a simplified management experience and a native web UI for monitoring your GitOps workflows. This guide walks you through migrating an existing FluxCD installation to the Operator pattern with UI enabled, while maintaining GitLab as your Git source. https://devopstales.github.io/kubernetes/k8s-swap-etcd-stability/ Fri, 27 Feb 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-swap-etcd-stability/ When enabling swap on Kubernetes nodes, you might encounter a critical issue where misbehaving containers don’t get killed automatically. When this affects etcd, the API server generating excessive load and consuming all available resources. This post explains the problem and provides two solutions. https://devopstales.github.io/kubernetes/k8s-dmz-bgp-external-haproxy/ Thu, 26 Feb 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-dmz-bgp-external-haproxy/ Learn how to deploy HAProxy Ingress Controller on AlmaLinux in a DMZ network outside your Kubernetes cluster—without Cilium’s deprecated external workload mode. This guide covers BGP peering with BIRD, Cilium’s Pod CIDR export, firewalld configuration, and production-ready setup for secure ingress traffic isolation. https://devopstales.github.io/kubernetes/mtls-traefik-ingress/ Wed, 25 Feb 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/mtls-traefik-ingress/ Mutual TLS (mTLS) adds a critical security layer to your Kubernetes applications by requiring clients to authenticate with certificates—not just passwords or tokens. This guide covers per-ingress mTLS configuration with Traefik Ingress Controller, using Traefik’s native TLSOption CRD for fine-grained control over which services require client certificate authentication. https://devopstales.github.io/kubernetes/mtls-nginx-ingress/ Tue, 24 Feb 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/mtls-nginx-ingress/ Mutual TLS (mTLS) adds a critical security layer to your Kubernetes applications by requiring clients to authenticate with certificates—not just passwords or tokens. This guide covers per-ingress mTLS configuration with NGINX Ingress Controller, giving you fine-grained control over which services require client certificate authentication. https://devopstales.github.io/kubernetes/nginx-to-traefic-ingress-migration/ Mon, 23 Feb 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/nginx-to-traefic-ingress-migration/ The Kubernetes community announced the retirement of Ingress NGINX with best-effort maintenance ending March 2026. This guide walks you through a safe, tested migration path to Traefik Proxy—with code examples, annotation mappings, and production tips. https://devopstales.github.io/kubernetes/nginx-to-haproxy-ingress-migration/ Sun, 22 Feb 2026 00:00:00 +0000 https://devopstales.github.io/kubernetes/nginx-to-haproxy-ingress-migration/ The Kubernetes community announced the retirement of Ingress NGINX with best-effort maintenance ending March 2026. This guide walks you through a safe, tested migration path to HAProxy Kubernetes Ingress Controller—with code examples, annotation mappings, and production tips. https://devopstales.github.io/kubernetes/kubernetes-resource-visibility/ Thu, 15 May 2025 00:00:00 +0000 https://devopstales.github.io/kubernetes/kubernetes-resource-visibility/ When you check resource usage inside a Kubernetes pod, you might be surprised to see the full host machine’s resources - even when you’ve set strict limits. Let’s explore why this happens and how to fix it. https://devopstales.github.io/kubernetes/cluster-api/ Sun, 06 Apr 2025 00:00:00 +0000 https://devopstales.github.io/kubernetes/cluster-api/ In this post I will show you how you can install and manage a Kubernetes cluster with Cluster API. https://devopstales.github.io/kubernetes/automatic-k8s-certificate-renewal/ Fri, 20 Dec 2024 00:00:00 +0000 https://devopstales.github.io/kubernetes/automatic-k8s-certificate-renewal/ In this post I will show you how you can automate the Kubernetes Certificate renewal. https://devopstales.github.io/kubernetes/k8s-hierarchical-namespace-controller/ Fri, 25 Oct 2024 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-hierarchical-namespace-controller/ In this Post I will show you how to install Hierarchical namespace controller (HNC) on k8s. https://devopstales.github.io/kubernetes/k8s-custom-kube-scheduler/ Thu, 24 Oct 2024 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-custom-kube-scheduler/ In this post I will show you how you can create a custom Kube-Scheduler to chaneg scheduling options. https://devopstales.github.io/kubernetes/k8s-kube-scheduler-profile/ Wed, 23 Oct 2024 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-kube-scheduler-profile/ In this post I will show you how you can create a custom Kube-Scheduler profile to chaneg scheduling options. https://devopstales.github.io/kubernetes/k8s-dmz-vxlan/ Wed, 10 Apr 2024 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-dmz-vxlan/ In this post I will show you how to nstall HAProxy Igress Controller on a separate VM instad of running it in the Kubernetes cluster as a pod. For this I will use cilium external-workload option. https://devopstales.github.io/kubernetes/k8s-dmz-bgp/ Sun, 03 Mar 2024 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-dmz-bgp/ In this post I will show you how to nstall HAProxy Igress Controller on a separate VM instad of running it in the Kubernetes cluster as a pod. For this I will use cilium BGP pod CIDR export option. https://devopstales.github.io/kubernetes/openshift4-monitoringw-with-external-grafana/ Tue, 20 Feb 2024 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift4-monitoringw-with-external-grafana/ In this Post I will show you how you how you can integrate an external Grafana with OpenShift 4 Prometheus. https://devopstales.github.io/kubernetes/rke2-ingress-loadbalancer/ Thu, 15 Feb 2024 00:00:00 +0000 https://devopstales.github.io/kubernetes/rke2-ingress-loadbalancer/ In this Post I will show you how to Configure MetalLB to provide a bare metal Load Balancer for NGINX Ingress Controller. https://devopstales.github.io/kubernetes/k8s-secure-install/ Sat, 20 Jan 2024 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-secure-install/ In this post I will show you how to install a Kubernetes cluster in a secure way with. https://devopstales.github.io/kubernetes/k8s-checkpointing/ Sun, 14 Jan 2024 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-checkpointing/ In this post I will show you how to use Container Checkpoints. https://devopstales.github.io/kubernetes/cni-genie/ Fri, 27 Oct 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/cni-genie/ In this post I will show you how you can use CNI-Genie for network separation with multiple CNI. https://devopstales.github.io/kubernetes/k8s-install-with-swap/ Fri, 22 Sep 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-install-with-swap/ Kubeadm is a tool that helps you bootstrap a simple Kubernetes cluster and simplifies the deployment process. In this post I will use kubeadm to install swap enabled kubernetes. https://devopstales.github.io/kubernetes/multus-nmstate/ Thu, 14 Sep 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/multus-nmstate/ In this post I will show you how you can use nmstate operator to manage your network configurations on a Kubernetes host. https://devopstales.github.io/kubernetes/cluster-mesh-with-submariner/ Wed, 23 Aug 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/cluster-mesh-with-submariner/ In this tutorial I will show you how to install Rancher Submariner on multiple Kubernetes clusters and connect those clusters with Cluster Mesh. https://devopstales.github.io/kubernetes/cluster-mesh-with-skupper/ Sat, 12 Aug 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/cluster-mesh-with-skupper/ In this tutorial I will show you how to install skupper on multiple Kubernetes clusters and connect those clusters with Cluster Mesh. https://devopstales.github.io/kubernetes/cluster-mesh-with-linkerd/ Sun, 06 Aug 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/cluster-mesh-with-linkerd/ In this tutorial I will show you how to install linkerd on multiple Kubernetes clusters and connect those clusters with Cluster Mesh. https://devopstales.github.io/kubernetes/cluster-mesh-with-cilium/ Sat, 15 Jul 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/cluster-mesh-with-cilium/ In this tutorial I will show you how to install Cilium on multiple Kubernetes clusters and connect those clusters with Cluster Mesh. https://devopstales.github.io/kubernetes/debug-couldnt-get-resource-list/ Mon, 10 Jul 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/debug-couldnt-get-resource-list/ I this post I will show you how to troubleshoot your Kubernetes cluster when you get an API error at resource listing. https://devopstales.github.io/kubernetes/openshift4-monitoring/ Wed, 14 Jun 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift4-monitoring/ In this Post I will show you how you can use the enbeddid Prometheus monitoring system in OpenShift 4 to monitor your workload applications. https://devopstales.github.io/kubernetes/k8s-migrate-pv/ Wed, 31 May 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-migrate-pv/ In this post I will show you how can you use migrate your data from one PV to another. https://devopstales.github.io/kubernetes/k8s-cephfs-storage-with-csi-driver/ Tue, 30 May 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-cephfs-storage-with-csi-driver/ In this post I will show you how can you use CephFS with CSI driver for persistent storage on Kubernetes. https://devopstales.github.io/kubernetes/k8s-rolling-upgrade/ Mon, 29 May 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-rolling-upgrade/ In this post I will show you how you can for pod upgrade at config changes in helm charts. https://devopstales.github.io/kubernetes/k8s-rolling-pods-config-changes/ Thu, 25 May 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-rolling-pods-config-changes/ In this post I will show you how you can influence the Deployment controller to perform a rolling upgrade. https://devopstales.github.io/kubernetes/k8s-pod-locations/ Mon, 10 Apr 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-pod-locations/ In this post I will show you how you can influence the Kubernetes Scheduler where to schedule a pod. https://devopstales.github.io/kubernetes/kubedash-1.0/ Mon, 20 Mar 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/kubedash-1.0/ Today I am happy to announce the release of KubeDash 1.0. This blog post focuses on the functionality provided by the KubeDash 1.0. https://devopstales.github.io/kubernetes/openshift4-service-serving-certificate/ Sat, 25 Feb 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift4-service-serving-certificate/ In this Post I will show you how you can use Service Serving Certificate on OpenShift4. https://devopstales.github.io/kubernetes/openshift4-buildconfig/ Wed, 25 Jan 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift4-buildconfig/ In this Post I will show you how you can install rad hat openshift pipelines (Tekton) on OpenShift4. https://devopstales.github.io/kubernetes/cilium-opnsense-bgp-v2/ Wed, 25 Jan 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/cilium-opnsense-bgp-v2/ In this tutorial I will show you how to install Cilium with BGP integration for Kubernetes. https://devopstales.github.io/kubernetes/openshift4-registry/ Mon, 23 Jan 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift4-registry/ In this Post I will show you how you can configure the enbedded rad hat quay docker registry in Openshift. https://devopstales.github.io/kubernetes/openshift4-tekton/ Fri, 20 Jan 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift4-tekton/ In this Post I will show you how you can install rad hat openshift pipelines (Tekton) on OpenShift4. https://devopstales.github.io/kubernetes/microk8s-expired-cert/ Tue, 10 Jan 2023 00:00:00 +0000 https://devopstales.github.io/kubernetes/microk8s-expired-cert/ In this Post I will shoe you how to renew the kubernetes api cert in Microk8s. https://devopstales.github.io/kubernetes/k8s-limits/ Tue, 08 Nov 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-limits/ In this post I will show you the usage of the Kubernetes limits and requests. https://devopstales.github.io/kubernetes/k8s-user-namespace/ Wed, 02 Nov 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-user-namespace/ In this blog post I will introduce user namespaces, then I will show you how you can use it in Kubernetes. https://devopstales.github.io/kubernetes/k8s-ceph-csi-extand/ Thu, 20 Oct 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-ceph-csi-extand/ In this post I will show you how can you use CEPH RBD CSI driver as persistent storage end enable volume expansion on Kubernetes. https://devopstales.github.io/kubernetes/trivy-operator-2.5/ Sat, 15 Oct 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/trivy-operator-2.5/ Today I am happy to announce the release of trivy-operator 2.5. This blog post focuses on the functionality provided by the trivy-operator 2.5 release. https://devopstales.github.io/kubernetes/k8s-ephemerald-pod/ Mon, 12 Sep 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-ephemerald-pod/ In this post I will show you how you can debug your application in a pod with a new function called Ephemeral Containers released in Kubernetes 1.25. https://devopstales.github.io/kubernetes/k8s-migrate-from-psp/ Wed, 24 Aug 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-migrate-from-psp/ With the release of Kubernetes v1.25, Pod Security admission has now entered to stable and PodSecurityPolicy is removed. In this article, I will show you how you can migrate to the new Pod Security Admission. https://devopstales.github.io/kubernetes/k8s-ps/ Tue, 23 Aug 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-ps/ With the release of Kubernetes v1.25, Pod Security Admission has now entered to stable and PodSecurityPolicy is removed. In this article, we cover the key concepts of Pod Security Admission along with how to use it. https://devopstales.github.io/kubernetes/k8s-pod-security-standards-using-kyverno/ Wed, 10 Aug 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-pod-security-standards-using-kyverno/ In this post I will show you how you can use Kyverno instal of Pod Security Admission. https://devopstales.github.io/kubernetes/k8s-crowdsec-ids/ Fri, 08 Jul 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-crowdsec-ids/ In this post I will show you how you can install CrowdSec Intrusion Detection System (IDS) inside a Kubernetes cluster. https://devopstales.github.io/kubernetes/trivy-operator-2.4/ Thu, 30 Jun 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/trivy-operator-2.4/ Today I am happy to announce the release of trivy-operator 2.4. This blog post focuses on the functionality provided by the trivy-operator 2.4 release. https://devopstales.github.io/kubernetes/k8s-pomerium-ingress-controller/ Tue, 14 Jun 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-pomerium-ingress-controller/ In this blog post, I will show you how you can install Pomerium Ingress Controller and use it to secure your application. https://devopstales.github.io/kubernetes/container-build-in-kubernetes/ Fri, 10 Jun 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/container-build-in-kubernetes/ In this blogpost I will show you what tools you can user for privileged builds in Kubernetes. https://devopstales.github.io/kubernetes/k8s-change-ip/ Tue, 07 Jun 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-change-ip/ In this tutorial I will show you how you can change th IP of the Kubernetes Nodes and Workers. https://devopstales.github.io/kubernetes/migrate-kubernetes-to-dockershim/ Thu, 05 May 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/migrate-kubernetes-to-dockershim/ With the new Kubernetes 1.24 and deprecation of dockershim, in this post I will show you how you can migrate your kubernetes cluster to use cri-dockerd instad of dockershim. https://devopstales.github.io/kubernetes/migrate-docker-to-containerd/ Thu, 05 May 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/migrate-docker-to-containerd/ With the new Kubernetes 1.24 and deprecation of dockershim, in this post I will show you how you can migrate your kubernetes cluster from docker to containerd. https://devopstales.github.io/kubernetes/migrate-docker-to-crio/ Thu, 05 May 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/migrate-docker-to-crio/ With the new Kubernetes 1.24 and deprecation of dockershim, in this post I will show you how you can migrate your kubernetes cluster from docker to cri-o. https://devopstales.github.io/kubernetes/k8s-install-containerd-v2/ Mon, 02 May 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-install-containerd-v2/ Kubeadm is a tool that helps you bootstrap a simple Kubernetes cluster and simplifies the deployment process. https://devopstales.github.io/kubernetes/containers-vs-pods/ Fri, 29 Apr 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/containers-vs-pods/ In this post we will take a look at the difference between containers and pods. https://devopstales.github.io/kubernetes/container-runtimes/ Fri, 22 Apr 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/container-runtimes/ Most people who start with containers believe it is just lightweight virtual machines with fast startup time, but it is a oversimplification that can be misleading. In this post we will try to understand the real natures of containers. https://devopstales.github.io/kubernetes/openshift4-cilium/ Wed, 06 Apr 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift4-cilium/ In this Post I will show you How you can Install OpenShift 4 cluster with Cilium. https://devopstales.github.io/kubernetes/kube-openid-connect-1.0/ Fri, 25 Mar 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/kube-openid-connect-1.0/ Today I am happy to announce the release of kube-openid-connect 1.0 and assign the first ever stable release number. This blog post focuses on the functionality provided by the kube-openid-connect 1.0 release. https://devopstales.github.io/kubernetes/k8s-user-accounts/ Tue, 22 Mar 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-user-accounts/ I this post I will show you how you can create Users in Kubernetes the right way. https://devopstales.github.io/kubernetes/flagger-nginx-canary-deployments/ Tue, 15 Mar 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/flagger-nginx-canary-deployments/ In this blog post, I will show you how you can install Flagger and use it to set up progressive delivery for the podinfo app to your Kubernetes cluster. https://devopstales.github.io/kubernetes/openshift4-calico/ Sat, 12 Mar 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift4-calico/ In this Post I will show you How you can Install OpenShift 4 cluster with Calico. https://devopstales.github.io/kubernetes/k8s-test-tools/ Wed, 02 Mar 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-test-tools/ I this blog post I will show you how you can validate your kubernetes objects, helm charts, images at CI/CD. https://devopstales.github.io/kubernetes/trivy-operator-2.3/ Fri, 04 Feb 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/trivy-operator-2.3/ Today I am happy to announce the release of trivy-operator 2.3. This blog post focuses on the functionality provided by the trivy-operator 2.3 release. https://devopstales.github.io/kubernetes/multus-calico/ Sat, 15 Jan 2022 00:00:00 +0000 https://devopstales.github.io/kubernetes/multus-calico/ In this post I will show you how you can use Multus CNI and Calico to create Kubernetes pods in different networks. https://devopstales.github.io/kubernetes/k8s-pinniped/ Wed, 29 Dec 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-pinniped/ In this tutorial I will setup Pinniped, a Single Sign-on solution from the VMware Tanzu project. https://devopstales.github.io/kubernetes/trivy-operator-2.2/ Mon, 27 Dec 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/trivy-operator-2.2/ Today I am happy to announce the release of trivy-operator 2.2. This blog post focuses on the functionality provided by the trivy-operator 2.2 release. https://devopstales.github.io/kubernetes/oml/ Tue, 21 Dec 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/oml/ In this post I will show you how you can publish your operator to OperatorHub. https://devopstales.github.io/kubernetes/trivy-operator-2.1/ Fri, 17 Dec 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/trivy-operator-2.1/ Today I am happy to announce the release of trivy-operator 2.1. This blog post focuses on the functionality provided by the trivy-operator 2.1 release. https://devopstales.github.io/kubernetes/openshift-log4shell/ Wed, 15 Dec 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-log4shell/ On OpenShift 4 and OpenShift 3.11 in OpenShift Logging the above mitigation can be applied to the affected Elasticsearch component. https://devopstales.github.io/kubernetes/openshift-elasticsearch-error/ Wed, 15 Dec 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-elasticsearch-error/ In this post I will show You How you can fix elasticsearch search-guard index error. https://devopstales.github.io/kubernetes/openshift4-auth/ Mon, 13 Dec 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift4-auth/ In this Post I will show you how you can create multiple ingress route on an OpenShift 4 on premise. https://devopstales.github.io/kubernetes/openshift4-ceph-rbd-csi/ Mon, 13 Dec 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift4-ceph-rbd-csi/ In this Post I will show you how you can create peristent storage on an OpenShift 4 with Ceph RBD CSI Driver. https://devopstales.github.io/kubernetes/openshift4-ingress/ Mon, 13 Dec 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift4-ingress/ In this Post I will show you how you can create multiple ingress route on an OpenShift 4 on premise. https://devopstales.github.io/kubernetes/openshift4-install/ Mon, 13 Dec 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift4-install/ In this Post I will show you how you can install the an OpenShift 4 on premise. https://devopstales.github.io/kubernetes/openshift4-logging/ Sun, 12 Dec 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift4-logging/ In this Post I will show you how you can install the Cluster Logging Operator on an OpenShift 4. https://devopstales.github.io/kubernetes/k8s-install-containerd/ Tue, 09 Nov 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-install-containerd/ Kubeadm is a tool that helps you bootstrap a simple Kubernetes cluster and simplifies the deployment process. https://devopstales.github.io/kubernetes/k8s-central-oauth/ Fri, 05 Nov 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-central-oauth/ In this post I will show you how to use one central OAuth2 Proxy for multiple services inside your Kubernetes Cluster. https://devopstales.github.io/kubernetes/k8s-rbac-gen/ Wed, 03 Nov 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-rbac-gen/ In this blog, I will show you how to create a kubeconfig file with limited access to kubernetes cluster using service account, secret token and RBAC https://devopstales.github.io/kubernetes/k8s-falco/ Tue, 02 Nov 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-falco/ In this blog post I will show you how how you can use Kubernetes the audit logs and Falco for detecting suspicious activities in you cluster. https://devopstales.github.io/kubernetes/k8s-cisa-install/ Fri, 15 Oct 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-cisa-install/ On August 3rd, 2021 the National Security Agency (NSA) and the Cybersecurity and Infrastructure Security Agency (CISA) released, Kubernetes Hardening Guidance, a cybersecurity technical report detailing the complexities of securely managing Kubernetes. This blog post will show you how you can harden your Kubernetes cluster based on CISA best practices. https://devopstales.github.io/kubernetes/trivy-operator-1.0/ Sat, 09 Oct 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/trivy-operator-1.0/ Today I am happy to announce the release of trivy-operator 1.0 and assign the first ever stable release number. This blog post focuses on the functionality provided by the trivy-operator 1.0 release. https://devopstales.github.io/kubernetes/cilium-clustermesh/ Wed, 06 Oct 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/cilium-clustermesh/ In this tutorial I will show you how to install Cilium on multiple Kubernetes clusters and connect those clusters with Cluster Mesh. https://devopstales.github.io/kubernetes/docker-desktop-alternatives/ Mon, 20 Sep 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/docker-desktop-alternatives/ At Aug. 31, 2022 Docker announced a new subscription plan for Docker Desktop. So we will Check the best alternatives for docker desktop on Windows an MacOS. https://devopstales.github.io/kubernetes/k8s-seccomp/ Fri, 03 Sep 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-seccomp/ In this post I will attempt to demystify the relationship of seccomp and Kubernetes This first part will look at containers and pods. https://devopstales.github.io/kubernetes/kubernetes-networking-2/ Tue, 31 Aug 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/kubernetes-networking-2/ In my previous posts We check how the pod networking and How Kubernetes use services for loadbalancing. Now we check how the diferente Networking solutions works. How Theas solutins link the kubernetes nodes together. https://devopstales.github.io/kubernetes/kubernetes-networking-1/ Mon, 30 Aug 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/kubernetes-networking-1/ In this series I will attempt to demystify the Kubernetes networkiing layers. This first part will look at containers and pods. https://devopstales.github.io/kubernetes/k8s-git-backup/ Sat, 28 Aug 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-git-backup/ In this tutorial I will show you how you can backup the kubernetes object to git as yaml-s. https://devopstales.github.io/kubernetes/firecracker-cri-o/ Mon, 23 Aug 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/firecracker-cri-o/ In this post I will show you how you can install and use kata-container with Firecracker engine in kubernetes. https://devopstales.github.io/kubernetes/gvisor-cri-o/ Mon, 23 Aug 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/gvisor-cri-o/ In this post I will show you how you can install and use gvisor engine in kubernetes. https://devopstales.github.io/kubernetes/firecracker-containerd/ Sun, 22 Aug 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/firecracker-containerd/ In this post I will show you how you can install and use kata-container with Firecracker engine in kubernetes. https://devopstales.github.io/kubernetes/gvisor-containerd/ Sun, 22 Aug 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/gvisor-containerd/ In this post I will show you how you can install and use gvisor engine in kubernetes. https://devopstales.github.io/kubernetes/kata-container-containerd/ Fri, 20 Aug 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/kata-container-containerd/ In this post I will show you how you can install and use kata-container engine in kubernetes. https://devopstales.github.io/kubernetes/k8s-kyverno-cosign/ Wed, 18 Aug 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-kyverno-cosign/ In this post I will show you how you can use Kyverno and Cosign for Image Signature Verification in a Kubernetes cluster. https://devopstales.github.io/kubernetes/kyverno-image-mirror/ Mon, 16 Aug 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/kyverno-image-mirror/ In this post I will show you how you can automatically change the registry part in deployed pods in Kubernetes. https://devopstales.github.io/kubernetes/cilium-opnsense-bgp/ Thu, 05 Aug 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/cilium-opnsense-bgp/ In this tutorial I will show you how to install Cilium with BGP integration for Kubernetes. https://devopstales.github.io/kubernetes/vcluster/ Tue, 03 Aug 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/vcluster/ In this post I will use vCluster to run virtual Kubernetes clusters inside a Kubernetes cluster. https://devopstales.github.io/kubernetes/lazyimage/ Mon, 02 Aug 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/lazyimage/ In this post I will show you the solutions to speed up the container downloads. https://devopstales.github.io/kubernetes/k8s-connaisseur-v2/ Sun, 01 Aug 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-connaisseur-v2/ In this post I will show you how you can deploy Connaisseur 2.0 to Image Signature Verification into a Kubernetes cluster. https://devopstales.github.io/kubernetes/helm-repositoty/ Sun, 25 Jul 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/helm-repositoty/ In this post I will show you how you can host your own Helm repository with GitHub Pages. https://devopstales.github.io/kubernetes/k8s-custom-host/ Thu, 22 Jul 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-custom-host/ In this post I will show you how to add custom hosts to kubernetes. https://devopstales.github.io/kubernetes/image-security-admission-controller-v3/ Mon, 21 Jun 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/image-security-admission-controller-v3/ In a previous posts we talked about the anchore-image-validator made by Banzaicloud and the admission-controller made by Anchore. In this post I will show you my own admission-controller for image scanning. https://devopstales.github.io/kubernetes/continuous-image-security/ Tue, 15 Jun 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/continuous-image-security/ In this post I will show you my tool to Continuously scann deployed images in your Kubernetes cluster. https://devopstales.github.io/kubernetes/k8s-prometheus-stack/ Tue, 15 Jun 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-prometheus-stack/ In this tutorial I will show you how to install a prometheus operator to monotor kubernetes and loki to gether logs. https://devopstales.github.io/kubernetes/k8s-vault-v2/ Sat, 05 Jun 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-vault-v2/ In this post I will show you how you can integrate an external HashiCorp Vault to Kubernetes. https://devopstales.github.io/kubernetes/rke2-calico/ Tue, 25 May 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/rke2-calico/ In this post I will show you how you can install a RKE2 with Calico and encripted VXLAN. https://devopstales.github.io/kubernetes/rke2-cilium/ Mon, 24 May 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/rke2-cilium/ In this post I will show you how you can install a RKE2 with cilium and encripted VXLAN. https://devopstales.github.io/kubernetes/gitops-flux2-sops/ Sat, 08 May 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/gitops-flux2-sops/ In this post I will show you how you can use Mozilla SOPS with Flux2 to protect secrets. https://devopstales.github.io/kubernetes/gitops-flux2-kubeseal/ Fri, 07 May 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/gitops-flux2-kubeseal/ In this post I will show you how you can use kubeseal and Mozilla SOPS with Flux2 to protect secrets. https://devopstales.github.io/kubernetes/gitops-flux2/ Fri, 07 May 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/gitops-flux2/ In this post I will show you how you can use Install and Use the GitOps Tool Flux2. https://devopstales.github.io/kubernetes/k3s-gvisor/ Fri, 30 Apr 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k3s-gvisor/ In this post I will show you how you can secure k3s with gVisor. https://devopstales.github.io/kubernetes/k3sup-calico/ Sun, 18 Apr 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k3sup-calico/ In this post I will show you how to install K3S with k3sup and use Calico as networking. https://devopstales.github.io/kubernetes/k3s-cilium/ Sat, 17 Apr 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k3s-cilium/ In this post I will show you how to install K3S with k3sup and use Cilium as networking. https://devopstales.github.io/kubernetes/k3s-etcd-kube-vip/ Fri, 16 Apr 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k3s-etcd-kube-vip/ In this post I will show you how to install K3S with k3sup. I will use kube-vip for High-Availability and load-balancing. https://devopstales.github.io/kubernetes/argocd-image-updater/ Sun, 11 Apr 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/argocd-image-updater/ In this post I will show you how you can use Argo CD Image Updater to automate image update in Kubernetes. https://devopstales.github.io/kubernetes/argocd-kubeseal/ Sat, 10 Apr 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/argocd-kubeseal/ In this post I will show you how you can use kubeseal with ArgoCD to protect secrets. https://devopstales.github.io/kubernetes/k8s-gitops/ Fri, 09 Apr 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-gitops/ In this post I will compare the GitOps tools for Kubernetes. https://devopstales.github.io/kubernetes/k8s-vault/ Wed, 07 Apr 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-vault/ In this post I will show you how you can integrate HashiCorp Vault to Kubernetes easily thanks to Bank-Vaults made by Banzaicloud. https://devopstales.github.io/kubernetes/image-security-admission-controller-v2/ Wed, 31 Mar 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/image-security-admission-controller-v2/ In a previous post we talked about anchore-image-validator made by Banzaicloud. In this post I will show you how I updated that scenario for a real word solution. https://devopstales.github.io/kubernetes/k8s-backup/ Fri, 26 Mar 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-backup/ In this post I will show you how you can backup your Kubernetes cluster. https://devopstales.github.io/kubernetes/k8s-connaisseur/ Mon, 22 Feb 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-connaisseur/ In this post I will show you how you can deploy Connaisseur to Image Signature Verification into a Kubernetes cluster. https://devopstales.github.io/kubernetes/k8s-imagepullsecret-patcher/ Wed, 17 Feb 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-imagepullsecret-patcher/ In this post I will show you how you can use imagePullSecrets cluster-wide in Kubernetes. https://devopstales.github.io/kubernetes/kubernetes-policy/ Fri, 15 Jan 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/kubernetes-policy/ In this post I will show you how you can enforce best practices on Kubernetes Clusters. https://devopstales.github.io/kubernetes/k8s-networkpolicy/ Sun, 10 Jan 2021 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-networkpolicy/ In this post I will show you how you can use NetworkPolicys in K8S. https://devopstales.github.io/kubernetes/k0s/ Tue, 15 Dec 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k0s/ We all know and love K3s, right? It’s now time to discover a new distribution: k0s. https://devopstales.github.io/kubernetes/image-security-admission-controller/ Sun, 13 Dec 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/image-security-admission-controller/ In a previous post we talked about Admission Controllers. In this post I will show you how to use an Admission Controller to test image vulnerabilities. https://devopstales.github.io/kubernetes/rke2-pod-security-policy/ Thu, 10 Dec 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/rke2-pod-security-policy/ In this post I will show you how you can use Pod Security Policys in RKE2. https://devopstales.github.io/kubernetes/admission-controllers/ Mon, 07 Dec 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/admission-controllers/ In this post I will show you how you can use Admission Controllers. https://devopstales.github.io/kubernetes/kubernetes-deprecated-docker-containderd-docker/ Fri, 04 Dec 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/kubernetes-deprecated-docker-containderd-docker/ Docker is now deprecated in Kubernetes in the next 1.20 version, but thet dose no mean yo can not run containers wit docker. https://devopstales.github.io/kubernetes/rke2-airgap-install/ Wed, 25 Nov 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/rke2-airgap-install/ In this post I will show you how you can install a secure Kubernetes Engine variant called RKE2 in a Air-Gap environment. https://devopstales.github.io/kubernetes/k8s-vmware/ Wed, 14 Oct 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-vmware/ In this post I will show you how can you use vmware for persistent storagi on K8S. https://devopstales.github.io/kubernetes/k8s-calico-ebpf/ Tue, 13 Oct 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-calico-ebpf/ In this post I will show you how to install kubernetes Without kube-proxy using calico with eBPF mode. https://devopstales.github.io/kubernetes/k8s-ipvs/ Tue, 13 Oct 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-ipvs/ In this post I will show you how to install kubernetes with kube-proxy IPVS mode. https://devopstales.github.io/kubernetes/openshift-rbd-fsck/ Sat, 10 Oct 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-rbd-fsck/ In this tutorial I will show you how to fix a corruptid filesystem on Ceph RBD PersistentVolume uyed by Kubernetes. https://devopstales.github.io/kubernetes/being-productive-with-kubectl/ Fri, 09 Oct 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/being-productive-with-kubectl/ In this post I will show you my productivity tips with kubectl. https://devopstales.github.io/kubernetes/k3s-helm-controller/ Sun, 20 Sep 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k3s-helm-controller/ K3S comes with a Helm operator called Helm Controller. Helm Controller defines a new HelmChart custom resource definition, or CRD, for managing Helm charts. https://devopstales.github.io/kubernetes/k3s-crio/ Thu, 10 Sep 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k3s-crio/ In this post I will show you how to install cri-o container runtime and initialize a Kubernetes. https://devopstales.github.io/kubernetes/k3s-fcos/ Sat, 05 Sep 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k3s-fcos/ In this post I will show you how you can Install K3S on Fedora CoreOS(FCOS) in virtualization environment. https://devopstales.github.io/kubernetes/k8s-crio/ Fri, 04 Sep 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-crio/ In this post I will show you how to install cri-o container runtime and initialize a Kubernetes. https://devopstales.github.io/kubernetes/k8s-metallb-bgp-pfsense/ Tue, 18 Aug 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-metallb-bgp-pfsense/ In this tutorial I will show you how to install Metal LB load balancer in BGP mode for Kubernetes. https://devopstales.github.io/kubernetes/how-to-fix-ansible-service-broker-in-openshift-3-11/ Fri, 10 Jul 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/how-to-fix-ansible-service-broker-in-openshift-3-11/ Ansible Service Broker in OpenShift 3.11 is broken as it uses wrong docker tag. https://devopstales.github.io/kubernetes/how-to-fix-cluster-monitoring-operator-in-openshift-3-11/ Fri, 10 Jul 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/how-to-fix-cluster-monitoring-operator-in-openshift-3-11/ Default install use an old image for cluster-monitoring-operator with imagestream false latanci alert problem. https://devopstales.github.io/kubernetes/how-to-fix-registry-console-ui-in-openshift-3-11/ Fri, 10 Jul 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/how-to-fix-registry-console-ui-in-openshift-3-11/ Registry console UI in OpenShift 3.11 is broken on CentOS as it is not available on Docker Hub. https://devopstales.github.io/kubernetes/openshift-cert-manager/ Wed, 10 Jun 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-cert-manager/ cert-manager is a service that automatically creates certificate requests and sign certificate based on annotations. The created certificate will be stored in a secret. https://devopstales.github.io/kubernetes/openshift-auto-approval-csr/ Wed, 27 May 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-auto-approval-csr/ Nodes certificates are not Completely redeployed through playbook but through a different mechanism. https://devopstales.github.io/kubernetes/k8s-install-openebs/ Wed, 20 May 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-install-openebs/ OpenEBS is an open-source project for container-attached and container-native storage on Kubernetes. https://devopstales.github.io/kubernetes/k8s-kubeadm-ha/ Thu, 02 Apr 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-kubeadm-ha/ In this post I will show you how to install kubernetes in HA mode with kubeadm, keepaliwed and envoyproxy. https://devopstales.github.io/kubernetes/k8s-error-at-kubectl-logs/ Fri, 06 Mar 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-error-at-kubectl-logs/ I installed a kubernetes cluster in a Vagran environment. First everything was fine, but wen I try to add the command kubectl logs I got this error: $ kubectl logs busybox-7c9687585b-12d75 Error from server (NotFound): the server could not find the requested resource ( pods/log busybox-7c9687585b-12d75) https://devopstales.github.io/kubernetes/openshift_4/ Mon, 02 Mar 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift_4/ The Red Hat CodeReady Containers enables you to run a minimal OpenShift 4.2 or newer cluster on your local laptop or desktop computer. https://devopstales.github.io/kubernetes/k8s-longhorn/ Sat, 18 Jan 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-longhorn/ Longhorn is lightweight, reliable, and powerful distributed block storage system for Kubernetes.. https://devopstales.github.io/kubernetes/k8s-local-pv/ Wed, 08 Jan 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-local-pv/ In this post I will show you how to use a local folder as a persistent volume in Kubernetes. https://devopstales.github.io/kubernetes/helm3-loki/ Fri, 03 Jan 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/helm3-loki/ Helm is a template based package management system for kubernetes applications. https://devopstales.github.io/kubernetes/k8s-velero-backup/ Thu, 02 Jan 2020 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-velero-backup/ Velero (formerly Heptio Ark) gives you tools to back up and restore your Kubernetes cluster resources and persistent volumes. You can run Velero with a cloud provider or on-premises. https://devopstales.github.io/kubernetes/k8s-cert-manager/ Sun, 29 Dec 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-cert-manager/ In this tutorial I will show you how to install cert-manager running on Kubernetes (k8s). https://devopstales.github.io/kubernetes/openshift-secondary-router/ Fri, 20 Dec 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-secondary-router/ I this tutorial I will show you how to create a secondari router for Openshift. https://devopstales.github.io/kubernetes/kind-install/ Fri, 20 Dec 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/kind-install/ In this article, I will show you how to run a cluster in single Docker container using kind. https://devopstales.github.io/kubernetes/openshift-gitlab-helm/ Mon, 18 Nov 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-gitlab-helm/ I had to install Gitlab to Openshift recently. Turned out getting GitLab up and running on OpenShift is not so easy. https://devopstales.github.io/kubernetes/k8s-ceph-storage-with-csi-driver/ Tue, 08 Oct 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-ceph-storage-with-csi-driver/ In this post I will show you how can you use CEPH RBD with CSI driver for persistent storage on Kubernetes. https://devopstales.github.io/kubernetes/who-mapping-rbd-device/ Sat, 05 Oct 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/who-mapping-rbd-device/ https://devopstales.github.io/kubernetes/ansible-k8s-install/ Thu, 03 Oct 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/ansible-k8s-install/ Kubespray is a pre made ansible playbook for Kubernetes installation. In this Post I will show you how to use to install a new Kubernetes cluster. https://devopstales.github.io/kubernetes/openshift-restrict-access/ Fri, 20 Sep 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-restrict-access/ In this post I will show you how can restrict access to the routes by source IP address. https://devopstales.github.io/kubernetes/openshift-kompose/ Sun, 08 Sep 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-kompose/ Kompose is a open source tool that uses docker-compose file to deploy on kubernetes. Openshift is also Kubernetes based and Kompose is support Openshift too. https://devopstales.github.io/kubernetes/k8s-metallb/ Thu, 08 Aug 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-metallb/ In this tutorial I will show you how to install Metal LB load balancer running on Kubernetes (k8s). https://devopstales.github.io/kubernetes/k8s-tillerless-helm/ Tue, 23 Jul 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-tillerless-helm/ It looks like it is not so hard to have Tillerless Helm. So let me go to more details. https://devopstales.github.io/kubernetes/k8s-ceph/ Thu, 18 Jul 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-ceph/ In this post I will show you how can you use CEPH RBD for persistent storagi on Kubernetes. https://devopstales.github.io/kubernetes/k8s-nginx-ingress/ Sun, 14 Jul 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-nginx-ingress/ In this post I will show you how can you use install IngressControllert on Kubernetes with helm. https://devopstales.github.io/kubernetes/k8s-install/ Fri, 12 Jul 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-install/ Kubeadm is a tool that helps you bootstrap a simple Kubernetes cluster and simplifies the deployment process. https://devopstales.github.io/kubernetes/ansible-operator-overview/ Wed, 10 Jul 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/ansible-operator-overview/ Operators make it easy to manage complex stateful applications on top of Kubernetes. In this pos I will show you how to read an ansible based Openshift operator. https://devopstales.github.io/kubernetes/openshift-add-node/ Thu, 27 Jun 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-add-node/ Add Nodes to an existing Cluster. https://devopstales.github.io/kubernetes/openshift-letsencrypt/ Tue, 28 May 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-letsencrypt/ Thanks to Tomáš Nožička developed openshift-acme as an ACME Controller for OpenShift and Kubernetes clusters. It automatically provision certficates https://devopstales.github.io/kubernetes/openshift-hostalreadyclaimed/ Sun, 05 May 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-hostalreadyclaimed/ How to solvee Openshift Error: HostAlreadyClaimed https://devopstales.github.io/kubernetes/k8s-copy-secret/ Fri, 03 May 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-copy-secret/ A simple way of copying common secret data between namespaces https://devopstales.github.io/kubernetes/openshift-gitlabrunner/ Sat, 20 Apr 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-gitlabrunner/ In this post I will configure a gtlab rubber for Openshift. https://devopstales.github.io/kubernetes/openshift-extregistry/ Fri, 19 Apr 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-extregistry/ I this post I will demonstrate howyou can use an external registry in Openshift. https://devopstales.github.io/kubernetes/openshift-cert/ Wed, 17 Apr 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-cert/ In this post I will show you how can you chnage certificate in Openshift. https://devopstales.github.io/kubernetes/openshift-vmware/ Tue, 16 Apr 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-vmware/ In this post I will show you how can you use vmware for persistent storagi on Openshift. https://devopstales.github.io/kubernetes/openshift-helm/ Mon, 15 Apr 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-helm/ I this post I will demonstrate the basic configuration of Helm on Openshift. https://devopstales.github.io/kubernetes/k8s-helm-rbac/ Sun, 14 Apr 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/k8s-helm-rbac/ I this post I will demonstrate the basic mechanism of helm and Role-based access control (RBAC). https://devopstales.github.io/kubernetes/openshift-ceph/ Fri, 12 Apr 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-ceph/ In this post I will show you how can you use CEPH RBD for persistent storagi on Openshift. https://devopstales.github.io/kubernetes/openshift-ldap/ Fri, 12 Apr 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/openshift-ldap/ Configure Openshift Cluster to use LDAP as a user backend for login with Ansible-openshift https://devopstales.github.io/kubernetes/ansible-openshift-install/ Tue, 12 Mar 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/ansible-openshift-install/ Ansible-openshift is a pre made ansible playbook for Openshift installation. In this Post I will show you how to use to install a new Openshift cluster. https://devopstales.github.io/kubernetes/kubectl-multi-cluster-config/ Mon, 11 Mar 2019 00:00:00 +0000 https://devopstales.github.io/kubernetes/kubectl-multi-cluster-config/ I use a multiple Kubernetes clusters on a daily basis, so keeping my configs organized is important to don’t confuse myself.