Story Tag: openshift-4

Stories Tag: openshift-4

KubeVirt VMs on OpenShift Code Ready Containers (Part 1 of 2) | by Roney Samuel Varghese | May, 2021 |...

admin 3 weeks ago in

It all started with a phrase from a popular Sitcom “ Challenge Accepted” What is KubeVirt and why the drive to unify infrastructure provisioning? Today most companies have internal virtualization environments running on hypervisors backed by VMWare either using ESXi or a type 2 hypervisor. Developers and Internal customers have to shift between data centers, software, technology stack to deploy their applications with a choice…

รีวิว Flux บน OpenShift 4.7. พอดีได้มา maintain ตัว Flux Operator… | by Chanwit Kaewkasi | May, 2021 | Medium

admin 1 month ago in

พอดีได้มา maintain ตัว Flux Operator สำหรับ OpenShift ให้กับทีม Flux ของ Weaveworks เลยจะขอรีวิว Flux บน OpenShift 4.7 ซักหน่อย เพราะมีเรื่องใหม่ ๆ หลายเรื่องที่เพิ่งจะได้เรียนรู้ Operator ที่ติดตั้งบน OpenShift ได้จะต้องเป็นตัวที่พัฒนาด้วย Operator SDK โดย Operator ที่สร้างด้วย Kubebuilder ก็จะ compatible กันด้วยในระดับนึง (จริง ๆ แล้วอยากเล่าตั้งแต่เริ่มเลยว่า Kubernetes Operator คืออะไร แต่เนื้อหาคงจะมากเกินไปเลยขออนุญาตแปะเป็น link) ตัว Flux Operator สร้างด้วย Kubebuilder เลยต้องการ YAML มาประกาศเพิ่มเพื่อให้กลายเป็น Operator ที่ติดตั้งบน OpenShift ได้ ก็เลยมีการทำโครงการ Flux2-OpenShift ขึ้นมาห่อตัว Flux Operator เดิมแล้วก็ส่งขึ้น Community Operators ที่ วิศวกรของ Red Hat…

Openshift yaml : Error: found character that cannot start any token – Sathish Kumar – Medium

admin 1 month ago in

Yesterday, it was a worst day as I had spent my complete day for silly issue with my openshift.yaml file. PROBLEM: During the deployment of my app in openshift, I used to get the error ‘found character that cannot start any token’ I just added one additional environment variable like others it has set before. Looking at the openshift.yaml file, it looks better and didn’t…

OpenShift Architecture. OpenShift is a layered system designed… | by Darshana Wickramasinghe | Apr, 2021 | Medium

admin 2 months ago in

OpenShift is a layered system designed to expose underlying Docker-formatted container image and Kubernetes concepts as accurately as possible, with a focus on easy composition of applications by a developer. Red Hat OpenShift Container Platform unites developers and IT operations on a single platform to build, deploy, and manage applications consistently across hybrid cloud and multi-cloud infrastructures. OpenShift Container Platform — platform as a service…

OpenShift: A new era Kubenetes. OpenShift has taken the Ideology of… | by Nishant Singh | Mar, 2021 | Medium

admin 3 months ago in

OpenShift has taken the Ideology of DevOps to a next level. Seriously RedHat had done a great Job 👏 .By taking view of pipelines from Jenkins , Utilizing the resources to its fullest by considering containerization technology, Providing a very user friendly Graphical User interface just tell me who don’t want that . The idea was taken forth by taking Kubernetes into consideration and seeing…

Setup Metering Operator in OpenShift using static NFS volume | by Edmond Chan | Feb, 2021 | Medium

admin 4 months ago in

Recently I have to setup the Metering Operator inside a OpenShift cluster in order to collect usage data. The environment doesn’t offer any storage provisioner and static NFS provisioning is the only option. Prepare the namespace-openshift-metering.yaml YAML file for namespace creation: Create openshift-metering namespace: Then install Metering Operator using OpenShift Container Platform web console: In the NFS server, setup two NFS exports for: Prepare the…

On-Prem OpenShift 4.xでInsight Cluster OperatorがFallingになる場合の対処 | by Tetsuya Isogai | Feb, 2021 | Medium

admin 5 months ago in

OpenShiftのCluster Operatorのトラブルシューティング方法、Redsocks透過プロキシを少しだけ含む 最初に言っておくとこれは私のLab環境で起きたことの対処であるため汎用性・再現性は非常に低い。OpenShift Insight OperatorがDegraded Statusになる場合の対処。 私の環境ではLab環境からインターネットに抜ける際に社内のProxyサーバ設定を意識しなくてよいようにRedsocksというTransparent Proxyを使っていた。使い心地は特に問題ないのだがこれが時々落ちる。これが原因でOpenShiftクラスタ及びその上のPodからインターネットへのアクセスができずに問題が発生していた。（systemctl status で状態をみると起動中であるがアクセスログの日付が数日前で止まっている） redsocksを再起動。単純すぎる。 以上、Insight OperatorのStatusがDegradedになったときはインターネット疎通を疑ってみるといいよ、という話でした。 以上。

Batteries included. Due to a work commitment, I’ve finally… | by Richardacwalker | Jan, 2021 | Medium

admin 5 months ago in

Due to a work commitment, I’ve finally found the time and motivation to take a close look at Kubernetes. Having lived and breathed OpenShift for the past three years, I can only wish I’d done this sooner, if not before exploring OpenShift in the beginning. The first obviation is the accessibility to approaching Kubernetes. I need to remind myself that many of the Kubernetes concepts…

How to restore lost one master and etcd on OCP4.6 | by Daein Park | Nov, 2020 | Medium

admin 7 months ago in

This test is a kind of hands-on review for the Replacing an unhealthy etcd member in the docs. It show you the progress of the lost one master recovery procedures on the bare-metal platform. The etcd design was changed as etcd operator as of OCP 4.5, so this restore procedures are different with old versions. After removing one master node vm on a hypervisor host,…