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

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RHCSA7: Task of the day

Allowed time: 8 minutes.
Find all files bigger than 100MB and write their names into the /root/results.txt file.

RHCE7: Task of the day

Allowed time: 10 minutes.
Set up a caching-only DNS server to forward DNS queries.

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Poll for favorite RHEL 7 book

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