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Kubernetes

Jean-Philippe Clapot

Kubernetes : from Docker to containerd

By | DevOps, Kubernetes | No Comments

Kubernetes is very popular and well-known open-source orchestration platform for containers. Very dynamic ecosystem, the release cycle is also very fast. Six months passed since the K8s team announced the dockershim will be deprecated and the 1.22 release deadline is approaching. As they informed in their quite detailed post in early Dec. 2020, Docker support will be removed in 1.22 : https://kubernetes.io/blog/2020/12/02/dont-panic-kubernetes-and-docker/ We are here today in order to see how we can migrate, with minimal…

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Franck Pachot

See you on Polywork (an new LinkedIn?)

By | AWS, Database Administration & Monitoring, Kubernetes, NoSQL, Oracle, Postgres | No Comments

By Franck Pachot . I have published 105 additional blog posts here since the 500th one https://blog.dbi-services.com/rollback-to-savepoint/ that I have written on my come back to dbi-services. On Oracle Database, of course, other databases as well, on clouds (OCI and AWS mainly, with a look at GCP and Azure). But also with some thoughts on the rise of the “scale-out” obsession of NoSQL. And, because I’m convinced that consistency, referential integrity, and SQL is a…

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Karsten Lenz

Rancher installation on RHEL 8 compatible Linux

By | Docker, Kubernetes | No Comments

This Blog is about the installation of Rancher Community on a RHEL 8 compatible Linux, for this Blog i choose AlmaLinux 8.4, but i will also work on Rocky Linux 8.4 Release Candidate. Base is an AlmaLinux / Rocky Linux minimal installation on a VMWare Host for all nodes, using the same configuration with 4vCPU and 4GB RAM. A small comaprsion of RHEL 8 and the alternatives can be found in my other blog her:…

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Franck Pachot

El Carro: The Oracle Operator for Kubernetes

By | Kubernetes, Oracle | One Comment

By Franck Pachot . Google Cloud, Open Source and Oracle Databases… what seems to be a paradox is possible, thanks to cloud providers who contribute to open infrastructure. The idea is to use Operators (custom resource controllers on Kubernetes) to automate the Oracle Database operations in a standard, open and portable way. If you ever attempted to run Oracle Database on containers, trying to keep up with the DevOps approach, you know that it requires…

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Franck Pachot

K8s on Windows/VirtualBox

By | Kubernetes, Postgres | No Comments

By Franck Pachot . This is a little demo, easy to copy-paste, if you want to play with Kubernetes on your laptop. And, not a simple “Hello World” but a real database running here, able to scale up and down with full availability. Install Virtualbox I use Oracle VirtuaBox because I’m a big fan of Oracle products, especially when they are good and free. However, you can use Hyper-V (then just skip this paragraph and…

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Daniel Westermann

Deploying a Kubernetes cluster on EC2 with Rancher

By | AWS, Cloud, DevOps, Docker, Kubernetes | No Comments

Once Rancher is up and running, it makes the deployment and management of Kubernetes clusters quite easy. In this post we’ll deploy a brand new cluster on top of EC2. If you want to have a simple and quick Rancher playground you can follow this post, which will give you a Rancher setup on SLES 15. If you want to have a more production like Rancher setup, you can follow these posts: Rancher, up and…

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Daniel Westermann

Rancher on SLES 15 as a demo environment

By | Database Administration & Monitoring, DevOps, Docker, Kubernetes | No Comments

If you followed the last posts (Rancher, up and running, on EC2 – 1 – One node, Rancher, up and running, on EC2 – 2 – Three nodes and Rancher, up and running, on EC2 – 3 – Rancher setup) about Rancher, you know how to setup Rancher in a highly available RKE cluster. While this is the way to go for a production clusters, you might want to play with Rancher on a local…

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Daniel Westermann

Rancher, up and running, on EC2 – 2 – Three nodes

By | AWS, Database Administration & Monitoring, Docker, Kubernetes | No Comments

In the last post we’ve brought up a RKE Kubernetes cluster on a single node. While that is cool for demonstration purposes or testing, this is nothing for a real life setup. Running the control pane, the etcd nodes and the worker nodes all on one node, is nothing you want to do usually, as you can not guarantee fault tolerance with such a setup. To make the RKE cluster highly available we’ll be adding…

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Daniel Westermann

Rancher, up and running, on EC2 – 1 – One node

By | AWS, DevOps, Kubernetes | No Comments

If you want to play with Rancher you have several options, as outlined in the documentation. There are quick starts for the major public cloud providers (using Terraform), you can install it on a Linux host by using the Rancher container or you can do it on your own. We’ll be doing it step by step, as I believe that gives most information on how things actually work. We’ll start with one node and then…

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