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Category: Containers

Comparing Azure Kubernetes Service and Container Apps

Published 2024-11-27 by Kevin Feasel

Gaurav Shukla makes a comparison:

Hello Readers!! Welcome to the new blog!! AKS vs ACA, which is best in cloud migration? When migrating an application to the cloud, choosing the right platform is crucial to ensure scalability, cost-effectiveness, and ease of management. Two of the prominent services offered by Azure for running containerized applications are Azure Kubernetes Service (AKS) and Azure Container Apps (ACA). Both are excellent choices, but their use cases, complexity, and operational overhead differ significantly. This blog will provide a detailed comparison of AKS and ACA, helping you decide which is the best approach for your cloud migration.

Read on for an overview of each service and a nice table outlining the differences.

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Using Kubernetes with Distributed Availability Groups

Published 2024-11-19 by Kevin Feasel

Andrew Pruski has a guide for us:

A while back I wrote about how to use a Cross Platform (or Clusterless) Availability Group to seed a database from a Windows SQL instance into a pod in Kubernetes.

I was talking with a colleague last week and they asked, “What if the existing Windows instance is already in an Availability Group?”

This is a fair question, as it’s fairly rare (in my experience) to run a standalone SQL instance in production…most instances are in some form of HA setup, be it a Failover Cluster Instance or an Availability Group.

Read on for the tutorial. There are quite a few steps involved.

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SQL Server AGs and Kubernetes

Published 2024-07-29 by Kevin Feasel

Andrew Pruski shakes his head:

Say we have a database that we want to migrate a copy of into Kubernetes for test/dev purposes, and we don’t want to backup/restore.

How can it be done?

Well, with cross platform availability groups! We can deploy a pod to our Kubernetes cluster, create the availability group, and then auto-seed our database!

The caveat is, this probably isn’t a good idea. But then again, when has that ever stopped anyone?

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Dangling Images with Oracle 23ai Free Edition

Published 2024-05-10 by Kevin Feasel

Kellyn Gorman runs into an issue:

When I tried to connect via SQLPlus as SYSDBA, I received an EXTPROC error. It pointed clearly to the listener.ora file, which I discovered a path listed still to ora23c for the extproc, corrected it, started the Listener, but to no avail- an ORA-12547 error, realizing I had a make file issue on the binaries for Oracle.

I contacted Geral Venzl, who was very gracious and after some quick research, he came back that his folks said everything was fine with the images, so I thanked him and dug into the issue deeper.  I quickly discovered this problem could happen to others, so decided I better document here for anyone who does happen upon it.

Click through for the high-level explanation and a bit more detail on dangling images.

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Building a Docker Image with Docker Build Cloud

Published 2024-04-26 by Kevin Feasel

Andrew Pruski shows off Docker Build Cloud:

In a previous blog post we went through how to build a Docker container image from a remote (Github) repository.

Here we’re going to expand on that by actually building the image itself remotely, using Docker Build Cloud.

What we can do with Docker Build Cloud is instead of building the image locally and then having to push to a remote container registry (for example the Docker Hub), we can build remotely and then immediately push that image to the registry so that it is available for immediate use by say, our team members or deployment/testing pipelines.

Read on to see how it works.

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Troubleshooting an Azure ML Deployment Locally

Published 2023-12-13 by Kevin Feasel

I have a new video:

In this video, I take us through the process of creating a local deployment of an Azure ML managed endpoint. We will cover requirements, why you might want to do this, and common problems you may run into along the way.

This was a fun video to make, especially in anticipating the sorts of problems that come up along the way. I won’t pretend that it’s comprehensive but it does hit several of the most common problems I see (or cause).

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Application Portability Challenges with Kubernetes

Published 2023-12-08 by Kevin Feasel

Kiana Harris lays out some challenges:

As organizations embrace containerization and Kubernetes for their applications, the need for seamless portability across the Kubernetes ecosystem coupled with cloud object storage and local persistence has become a pressing concern.  In this blog post, we will dive into the core problem and dissect the complex challenges that customers face in achieving containerized app portability.

Read on for the list of challenges, followed by what you can do to address them. This is at a really high level but can provide food for thought.

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