When monitoring Kubernetes clusters using Elastic Stack, the volume of logs can be overwhelming, often reaching gigabytes per minute. This is particularly true for OpenShift clusters, where significant traffic originates from system namespaces you might not be familiar with. Optimizing log collection becomes crucial for maintaining system efficiency and resource utilization. Success in this endeavor…
Read MoreStarting a new project is often an opportunity to reevaluate established practices. In our case, deploying a containerized application to production with OpenShift led us to revisit our GitOps strategy. Using ArgoCD as our GitOps tool raised a fundamental question: What is the best way to move changes into production—push or pull? Understanding Push and…
Read MoreOpenShift already has a built-in monitoring suite with Prometheus, Grafana, and Alertmanager. This is all well and good, but what if organizations want to monitor their entire infrastructure, integrating all monitoring results under one umbrella? In this case, it’s necessary to send the metrics somehow from OpenShift to NetEye. In this tutorial, I’ll show you…
Read MoreIn the first blog post of this series I showed you how to set up an OpenShift test environment and set up Gitea via helm chart and add an ssh key to Gitea. In the second blog post we created a deployment with ArgoCD that clones via ssh from our Gitea instance. In this final…
Read MoreIn my previous post, we set up our test environment and a Gitea operator. In this blog post we’ll install the OpenShift GitOps operator and run a simple deployment. This setup allows us to test OpenShift-specific security constraints (such as OpenShift-specific SCCs, non privileged containers by default, etc.) in a test environment before going into…
Read MoreIn this series of blog posts I’ll show you how to set up ArgoCD and Tekton to clone git repositories via ssh from a Gitea instance hosted on an OpenShift cluster. Please note that for the sake of this blog post, the configurations are not suited for use in production, but just to give you…
Read MoreEvery so often it may happen (in particular after a cluster update or hardware issues) that you see your storage in a warning state on OpenShift. The first thing to do is to check what’s wrong with your cluster: sometimes you may have a real issue, in other cases it may just be a temporary…
Read MoreA few months ago while navigating through our NetEye User Guide we noticed that it had a small bug that caused some words in the right-side menu to be slightly truncated in the particular case where that menu contained some monospace characters. Well, since this was quite annoying, we fixed it on the fly with…
Read MoreRecently we felt the need to collect anonymous metrics about how our users are visiting our websites. After some investigation, the development team proposed using Matomo: a free and open source software project which collects usage metrics while guaranteeing 100% privacy alongside the chance to be self-hosted. We decided to install it on OpenShift, since…
Read MoreSome days after installing an OpenShift cluster you may notice a warning related to insights: the system is complaining because metrics are not stored in a persistent way and a restart of the container may cause the loss of metrics. In OpenShift it is possible to configure several custom metrics. In this post I will…
Read MoreRecently when opening a console in the web-ui of OpenShift in Firefox, I saw the following: This doesn’t happen when opening the console using Chromium. In the Firefox debugger, we can see that we have the following error: The error is due to a strict Firefox privacy setting that prevents characters from being loaded. To…
Read MoreOn our OpenShift cluster we use pulp3 as the repository manager. One recent task we had to do was to add a certificate before we could expose the repository over TLS. Our IT department provided us with the certificate in .pfx format. Following this guide for converting the certificate to a format usable by OpenShift,…
Read MoreToday we wanted to update our OpenShift cluster, and after a while we came up against the following error: Not good… Let’s start by checking the clusterversion to investigate if we can find any errors: By analyzing the logs further we found the following error: it seems like the openshift-etcd-operator is not able to deploy…
Read MoreIn my previous blog-post I wrote an introduction to pipelining in OpenShift. This blog post is a follow-up to explain how to trigger a pipeline automatically. Tekton triggers are quite complex and need some explanation in order to be understood. To trigger a pipeline you need several components. In the graph below you can see…
Read MoreIt’s been a while since my last blog post about our OpenShift journey since as a devops team, we’ve been focusing on other activities for a while. Today I’d like to talk a bit about how to use OpenShift for CI purposes. As described in our productive use case, we implemented several pipelines to build…
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