Blog Archives

Recent technical articles.

OpenShift: Red Hat Container Development Kit (CDK) With Nested KVM, Building and Operating Cloud-Native Applications, OpenShift 3.X: Features/Functions/Future (34min/2018), How Full is My Cluster? Part 1: Quotas, Requests, Limits, Part 2: Protecting the Nodes, Part 3: Capacity Management, The oc Command

Posted in RHEL7

Latest technical articles.

OpenShift: Running Microsoft SQL Server pod on OpenShift, Understanding Service Brokers on OpenShift, Part 2 (5min/2018), HPE Reference Configuration for Red Hat OpenShift Container Platform on HPE Synergy Composable Infrastructure, The CoreOS bet, SnowCamp 2018 Trip Report, Openshift Origin on Power Systems

Posted in Uncategorized

2018 DevConf.cz interesting videos.

Last week-end was organized the free annual community conference for developers, admins, and users of Open Source technologies called DevConf.cz. The conference happened over three days in Czech Republic at Brno. Many interesting videos were recorded. What was the schedule

Posted in Others

Recent technical articles.

Virtualization: Container Images and Hosts: Selecting the Right Components, Buildah Blocks – OCI Shell Game, OpenShift: What OpenShift Online and Dedicated customers should know about Meltdown and Spectre, Prometheus Alerts on OpenShift, Secure your Kubernetes production cluster, APB Development Tutorial –

Posted in RHEL7

Latest technical articles.

Meltdown / Spectre: Reading privileged memory with a side-channel, Kernel Side-Channel Attacks – CVE-2017-5754 CVE-2017-5753 CVE-2017-5715, KPTI — the new kernel feature to mitigate “meltdown”, What are Meltdown and Spectre? Here’s what you need to know, Controlling the Performance Impact

Posted in RHEL7

Recent technical articles.

Openshift: Debug your OpenShift Java application with Microsoft VSCode and Red Hat CDK, Deploying OpenShift Applications to Multiple Datacenters, A First Look at KubeVirt, OpenShift Commons Gathering at Austin 2017 Recap with Videos and Slides, Getting to Know OpenShift with Minishift,

Posted in RHEL7

Latest technical articles.

Openstack: An Introduction to Fernet tokens in Red Hat OpenStack Platform, OpenStack Heat Orchestration – Let’s build a whole neighborhood! Openshift: DNS in Red Hat OpenShift Container Platform? Keeping your OpenShift Container Platform HAproxy Highly Available with Keepalived, Miscellaneous: Introducing stapbpf

Posted in RHEL7

Recent technical articles.

Openshift / Kubernetes: Accelerating the development of Node.js using OpenShift, Flexible Images or Using S2I for Image Configuration, Monitoring Camel with Prometheus in Red Hat OpenShift, Example of using Ansible to update Container Native Storage, OpenShift Ansible Broker: Available Now, Steps to replace

Posted in Uncategorized

Latest technical articles.

OpenShift / Kubernetes / Container: Getting Started with Buildah, Securing Kubernetes Cluster Networking, OpenShift Container Platform Reference Architecture Implementation Guides, What’s New in OpenShift 3.7 – Service Catalog and Brokers, Wiping the Slate Clean with the OpenShift Container Platform, How to

Posted in RHEL7

Kickstart community repository.

I remember the first time I had to write a Kickstart file. It was a painful experience. I tried to understand what the various keywords meant. Each attempt led me to a syntax error message. Documentation was difficult to find.

Posted in RHEL7

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: 10 minutes.
Set up a default secure MariaDB database called maria and create a table named people with two columns respectively name varchar(20) and age int(10) unsigned.

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