Eleven Links of Note - January 9th, 2026

Breaking Boundaries - Kubernetes Namespaces and multi-tenancy: Namespaces are great for logically breaking up services and apps, but don't depend too much on them for security boundaries without doing some work.

KubeVirt Live Migration Mastery: Network Transparency with Kube-OVN: Walk through on live-migrating virtual machines using KubeVirt (or OpenShift Virtualization).

Red Hat Certified Engineer (RHCE) Ansible Automation Study Guide: Free book if you intend to study for the RHCE test. Or use it to get familiar with Ansible.

Kernel bugs hide for 2 years on average. Some hide for 20: Linus' Law states that given enough eyeballs, all bugs are shallow. Well, about that. . .

Best 8 Jenkins Alternatives for DevOps: Jenkins is like democracy; it is the worst system out there, excluding others.

Logistics is Dying; or - Dude, Where's my Mail?: Post Mail is no longer sustainable, at least at the current rates of decline.

The hyperscale blueprint: Why cloud giants prioritize VMs for Kubernetes over bare metal: Interesting article on leveraging virtual machine to host kubernetes.

Kubernetes on Raspberry Pi: What’s Possible & How to Start: I had been running Kubernetes on Raspberry PI and it was fun. I ended up moving to OpenShift on x86 because I want to run bigger stuff.

AWS in 2026: The Year of Proving They Still Know How to Operate: Something that is surprising to me (although thinking about it now, it shouldn't be) is that Google Cloud is really starting to compete with AWS. I may look into getting back up to speed on GCP.

7 Reasons Your Kubernetes Pod Keeps Restarting. Here’s What’s Actually Going On: High level troubleshooting steps for fixing your pod issues.

Release Announcement: ansible-dev-tools v26.1.0: These days, this is a minimum you need to have installed for development of your Ansible code.

Other articles

Back to Black

Published: Sun 15 May 2016
By rilindo

In Blog.

tags: Ansible mcollective Puppet r10k RHCA RHCE Saltstack

I am back to using Puppet with my home lab, after just about a year running SaltStack.

I enjoyed using Saltstack, with its light-weight orchestration and fairly simple syntax. However, I am planning to get my RHCA by the end of next year, and one of the exams I am …
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It's bold strategy, Cotton. Let see if it pays off

Published: Fri 29 April 2016
By rilindo

In Blog.

tags: linux RHCE

A month ago, I took the RHCE exam, fairly confident I will pass after spending hours studying and practicing.

It did not happen. I was not even able to complete the exam on time. I was hoping when I came home that I somehow squeaked though, but then came the …
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I should put something here

Published: Sat 09 April 2016
By rilindo

In Blog.

tags: RHCE Samba

Some days, keeping up with technology can be a mix of frustration and excitement.

I am currently working on getting back my RHCE (Red Hat Certified Engineer) credentials (I had it before, but for reasons I wont get to, it expired). From there, I will be able to avail myself …
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The simple way of setting up NAT with iptables and Red Hat / CentOS and Scientific Linux

Published: Sat 24 September 2011
By rilindo

In Blog.

tags: centos firewall ftp iptables nat redhat RHCE scientifix linux

I always feel intimidated with setting NAT. I knew, of course, how to filter packets with iptables, but I always felt that NAT to be just a tad bit confusing. Then I studied for the RHCE exam and it turns out that it is a lot easier than I expected …
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A Slightly Longer Guide to Setting up a Caching / Forwarding Name Server

Published: Sun 11 September 2011
By rilindo

In Blog.

tags: CACHING DNS FORWARDING RHCE

Setting up a caching server on RHEL6, by default, works out of the box for a RHEL-type distributions. From there, it is just the matter of adding additional changes to make it either a forwarding, master or slave name server.

Of course, in our case, there were glitches.

Reviewing through …
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