It’s obvious that the more OpenShift clusters you have, the harder it’s going to be to secure them. Without a dedicated platform to manage these clusters, you’ll need to provide special attention to each one of your clusters in order to validate them, and make sure that they did not drift from the organization’s security guidelines and regulations.

Managing OpenShift clusters separately without any management tool is just wrong and could cause breaches easily — both in a management and security perspective. Let’s take the next scenario to understand why.

Let’s say ‘company A’ decided to deploy multiple OpenShift clusters…


Lately I’ve been exploring new monitoring capabilities which are built-in the OpenShift product — without the need for a 3rd party monitoring tool. Even though most of the times 3rd party companies develop more advanced monitoring tools, the purpose of this blog is to show off one of the many out of the box monitoring features that come with OpenShift.

In this blog, I’ll be going step by step through the procedure of integrating the OpenShift monitoring stack to a Gmail account.

Why would I do that?

I think that the reasons for integrating a platform with a an external and independent source are quite…


OpenShift on a multi-cloud environment

Hybrid cloud is an IT architecture that incorporates some degree of workload portability, orchestration, and management across 2 or more environments — https://www.redhat.com/en/topics/cloud-computing/what-is-hybrid-cloud

Hybrid cloud is a term that I hear more and more over the days. Sometimes people use it as a buzz-word to attract customers or to sound cool, and sometimes people actually implement abstract workload on multiple environments, turning their platforms into hybrid ecosystems. Either way, it seems like going for a hybrid environment is a fundamental decision these days.

Everybody’s doing it, everybody is going hybrid. But, why?

  • Let’s think about public cloud providers like —…


By default, if you are running OpenShift 4+, it comes with a nice Cluster Operator called “monitoring”. The Cluster Operator allows you to monitor the OpenShift nodes and Kubernetes API, it provides information regarding the cluster’s state, pods, and other cluster-wide diagnostics.

Cluster Operators are configured during the installation of the cluster and provide the core services for the OpenShift cluster.

[mkotelni@mkotelni ~]$ oc get clusteroperators
NAME VERSION AVAILABLE PROGRESSING DEGRADED SINCE
...
monitoring 4.5.5 True False False 2d21h
...

An issue arose when developers and operators in different organizations realized that monitoring Kubernetes resources alone is not enough. Therefore…


Containers became a huge part of our life. I don’t think that there is an organization that does not use containers anymore. It does not matter if it is a TELCO or a small startup, everyone is implementing containers in some form, whether it’s Kubernetes, Openshift, Docker Swarm, or even just a simple Docker engine that runs containers on top a virtual machine.

The container world became enormous, and some companies decided to start implementing container image registries as a part of their environment — a “Private Registry”.


Imagine logging into Gmail, providing your username and password. Pressing the buttons, investing the time and effort of remembering and typing the long password you have created for your account; You are logged into Gmail now, you have read your emails, you decide that you need to log into Google Drive to check on some photos you have saved there a while back. Somehow, without any questions or prompts, you are logged into Google Drive. You have not provided any password, you have not provided any username or authentication method; Somehow, by some kind of magic, the credentials you have…


Introduction

Lately, I have noticed that the first thing that comes into mind when you speak about virtualization is VMware ESXI. People tend to think that the only “good” solution for virtualization in an enterprise organization is provided by VMware.

Even though VMware provides a nice solution for virtualization, in this short blog I’m going to challenge the preposition by providing an alternative for large scale virtualization. A product named Red Hat Virtualization, or RHV if you like acronyms.

Of course that Red Hat is best known for its operation system (Red Hat Enterprise Linux), but, the company also invests into…


Prometheus and Grafana have always been great opensource tools to monitor every aspect of your environment no matter how detailed you want your information, and no matter the scale of your environment. Prometheus will be gathering the metrics, and Grafana will be presenting the graphs and details you would like to see.

In this short blog I will be going through the installation and implementation of these tools in your VMware environment to deliver an efficient and comfortable solution for monitoring.

The files and configurations for this solution could be also found…

Michael Kotelnikov

Cloud Consultant, Red Hat

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