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The Lowdown on Downward API in OpenShift
A customer approached me recently with a use case where they needed to have the OpenShift container know the hostname of the node it was running on. They had found that the normal hostname file on...
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ETCD: Where is my Memory?
A colleague recently approached me about some cyclical etcd memory usage on their OpenShift clusters. The pattern appeared to be a “sawtooth” or “run and jump” pattern when looking at the etcd memory...
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Alternate Appliance Troubleshooting
Normally I would not document about an appliance problem. After all I have replaced quite a few components across a wide array of appliances including a stop clutch in a Whirlpool washing machine....
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Using VMware for OpenShift BM IPI Provisioning
Anyone who has looked at the installation requirements for an OpenShift Baremetal IPI installation knows that a provisioning node is required for the deployment process. This node could potentially...
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BareMetal IPI OpenShift Lab on VmWare?
I see a lot of customers asking about being able to deploy an OpenShift Baremetal IPI lab or proof of concepts in VmWare. Many want to do it to try out the deployment method without having to invest...
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Adding VmWare Worker Node to OpenShift Cluster the BareMetal IPI Way
In a previous blog I discussed how one could provide Intelligent Platform Management Interface (IPMI) capabilities to a VmWare virtual machine. I also eluded to being able to deploy OpenShift...
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Enabling vGPU in OpenShift Containerized Virtualization
There is a lot of discussion about using GPUs for AI/ML workloads and while some of those workloads run in containers there are still some use cases where those workloads run in virtual machines. In...
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Mirroring Operators into Red Hat Quay
When dealing with disconnected spoke clusters that are being deployed by Red Hat Advanced Cluster Management we have to be aware that any operators that we want to install into our disconnected spoke...
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Rook on Singe Node OpenShift
Recently a lot of customers have been asking about how to configure storage on a Single Node OpenShift (SNO) deployment. When dealing with a compact or multi-node OpenShift deployment I myself have...
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Install OpenShift with Agent Installer
There are so many ways to install OpenShift: Assisted Installer, UPI, IPI, Red Hat Advanced Cluster Management and ZTP. However I have always longed for a single ISO image I could just boot my...
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Check For Expired Certificates on OpenShift
OpenShift has a lot of certificates associated to the services it runs. With that in mind it might make sense to check on those certificates every once and a while with some kind of simple report. I...
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OpenShift to MicroShift Resource Mapping
Recently I was approached with the task of understanding what were the resource differences between OpenShift and MicroShift. This is especially important if one is interested in applying governance...
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Experimental FIPS on Red Hat Device Edge with MicroShift
Federal agencies purchasing cryptographic-based security systems must confirm an associated FIPS 140-2 or FIPS 140-3 certificate exists. This procurement “check-box” can definitely be a deal breaker....
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Bandwidth Limiting at The Edge
Recently I worked with a customer concerned about bandwidth, image replication and their edge locations. The customers concerns were warranted because they wanted to mirror a large set of software...
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MQTT, Telemetry, The Edge
When we hear the term edge, depending on who we are and what experiences we have had, we tend to think of many different scenarios. However one of the main themes in all of those scenarios, besides...
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Is Edge Really a New Concept?
In 1984, John Gage from Sun Microsystems coined the phrase "The Network is the Computer". In making the statement, he was putting a stake into the ground that computers should be networked otherwise...
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Simplicity of Linux Routing Brings OpenShift Portability
Anyone who has ever done a proof of concept at a customer site knows how daunting it can be. There is allocating the customer's environment from a physical space perspective, power and cooling, and...
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Near-Field Communication (NFC)
In an era where technology marketing revolves around AI, Edge, Cloud and Kubernetes, it's easy to overlook some of the subtle yet incredibly powerful innovations that have quietly revolutionized the...
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Exploring Golang with MQTT: File Transfers
While I've dabbled in writing scripts using Perl, Bash, and Python, I wouldn't necessarily label myself as a developer. However, I do have a penchant for automation, organizing logic, and embracing...
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Biometric Authentication in Fedora 39
I have been using a Apple Macintosh M1 Powerbook for a year now and I have grown accustom to using the fingerprint reader to login into the device rather then type my password every time to unlock it....
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