Monthly Archives: December 2020

Merry Christmas!

Kubernetes: How to create a custom resource with Kubernetes Operator, Kubernetes in DigitalOcean with Rancher, AKS Performance: Resource Requests and Limits, AKS Performance: Resource Quotas, AKS Performance: Limit Ranges, Non-Terminating Namespace Removal, OpenShift: Argo CD Namespace Isolation, Machine Learning Model

Posted in Others

Latest technical articles & videos.

Kubernetes: Don’t Panic: Kubernetes and Docker, Dockershim Deprecation FAQ, A Deep Dive into Kubernetes Scheduling, Kubernetes Tip: How Does OOMKilled Work? Using Fio to Tell Whether Your Storage is Fast Enough for Etcd, How to Restart All Pods in a

Posted in Others

CentOS is dead!

Yesterday, Red Hat announced that it is redirecting its efforts to CentOS Streams. While the end of life of CentOS 7 is unchanged and lasts until 2024, the end of life of CentOS 8 will expire at the end of

Posted in RHEL8

Recent technical articles & videos.

Kubernetes: Database migrations on Kubernetes using Helm hooks, Preparing before the storm: Migrating our monolith into Kubernetes, Monitoring the Beat microservices: A tale of evolution, Yet another Kubernetes DNS latency story, Role Based Access Control (RBAC), Kubernetes: ServiceAccounts, JWT-tokens, authentication,

Posted in Others

RHCSA7: Task of the day

Allowed time: 5 minutes.
Create two users "tom" and "engine". "tom" has the UID/GID 3000 and "engine" the UID/GID 4000. "engine" doesn't have an interactive shell.

RHCE7: Task of the day

Allowed time: 3 minutes.
Configure your machine to be a router.

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Poll for favorite RHEL 7 book

What is your favorite RHEL 7 book to prepare RHCSA & RHCE exams?

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Poll for most difficult RHCSA 7 topic

What do you think is the most difficult RHCSA 7 topic?

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Poll for most difficult RHCE 7 topic

What do you think is the most difficult RHCE 7 topic?

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