Alexander Dejanovski on foojay.io - Friends of OpenJDK

Reaper 3.0 for Apache Cassandra is available

Fri, 18 Mar 2022 14:55:43 +0000

The K8ssandra team is pleased to announce the release of Reaper 3.1 . Let’s dive into the features and improvements that 3.0 recently introduced (along with some notable removals) and how the newest update to 3.1 builds on that.

Starting with 3.1.0, Reaper can now compile and run with jdk11. Note that jdk8 is still supported at runtime.

Over the years, we regularly discussed dropping support for Postgres and H2 with the The Last Pickle (TLP) team, now part of DataStax , the organization leading the open-source development of Reaper. Despite our lack of expertise in Postgres, the effort required to maintain support for these storage backends was moderate as long as Reaper’s architecture was simple. However, complexity grew with more deployment options, culminating with the addition of the sidecar mode.

Cassandra Database Migration to Kubernetes with Zero Downtime

Tue, 15 Feb 2022 15:22:15 +0000

K8ssandra is a cloud-native distribution of the Apache Cassandra® database that runs on Kubernetes, with a suite of tools to ease and automate operational tasks. In this post, we’ll walk you through a database migration from a Cassandra cluster running in AWS EC2 to a K8ssandra cluster running in Kubernetes on AWS EKS, with zero downtime.

As an Apache Cassandra user, your expectation should be that migrating to K8ssandra would happen without downtime. To make that happen with “classic” clusters running on virtual machines or bare metal instances, you will use the datacenter (DC) switch technique which is commonly used in the Cassandra community to transfer clusters to different hardware or environments. The good news is that it’s not very different for clusters running in Kubernetes as most Container Network Interfaces (CNI) will provide routable pod IPs.

Backing up K8ssandra with MinIO

Thu, 03 Feb 2022 22:50:09 +0000

K8ssandra includes Medusa for Apache Cassandra® to handle backup and restore for your Cassandra nodes. Recently Medusa was upgraded to introduce support for all S3 compatible backends, including MinIO , the popular k8s-native object storage suite. Let’s see how to set up K8ssandra and MinIO to backup Cassandra in just a few steps.

Deploy MinIO

Similar to K8ssandra, MinIO can be simply deployed through Helm.

First, add the MinIO repository to your local list:

Requirements for Running K8ssandra for Development

Thu, 06 Jan 2022 12:15:27 +0000

The K8ssandra Quick start is a excellent guide for doing a full installation of K8ssandra on a dev laptop and trying out the various components of the K8ssandra stack. While this is a great way to get your first hands-on experience with K8ssandra, let’s state the obvious: running K8ssandra locally on a dev laptop is not aimed at performance. In this blog post, we will start Apache Cassandra® locally then explain how to run benchmarks to help evaluate what level of performance (especially throughput) you can expect from a dev laptop deployment.

Backing up K8ssandra with MinIO

Tue, 30 Nov 2021 17:00:00 +0000

K8ssandra Performance Benchmarks on Cloud Managed Kubernetes

Thu, 30 Sep 2021 08:06:22 +0000

Is there a cost to running Apache Cassandra in containers? How about on Kubernetes? We decided to answer those questions and benchmark K8ssandra on Amazon Web Services (AWS), Google Cloud Platform (GCP) and Azure managed Kubernetes services, comparing it to a Cassandra cluster running on AWS EC2 instances. The latter, being a very common setup for enterprises operating Cassandra clusters, serves as our baseline comparing apples to “apples in containers”.