We look into how to setup kubernetes easily on one machine and then get cephfs mounted into a pod. Using ceph you could balance workloads or share resources easily in your kubernetes cluster. Git repository ceph-kubernetes An example of how to setup ceph mounting on a kubernetes cluster. Ceph Packages First up after you have…

I wanted to try out the newly released Debian version of Bullseye for my Ceph cluster, so I updated one of my hosts, which, in hindsight, might have been a bit too early. Reseting a Ceph Host after OS crash or failed update Preparing cluster First you need to set the cluster into a noout…

Keeping track of your disks in a Ceph cluster is important so you could replace them in time before data loss. In this video we look into how to use SMART data to run a machine learning prediction in order predict when a disk fails. SmartMonTools is used locally to fetch the data. The data…

We will look into the Ceph dashboard and the different metrics you can find there. Then we will configure Prometheus Alertmanager to get timely alerts from the metrics in your Ceph Cluster.

I did not have Grafana dashboards that worked in my Ceph installation. Hence, I had to install Prometheus and Grafana manually and then configure the dashboards to show up in my Ceph cluster dashboard screens. NODE Setting up prometheus exporter in ceph. sudo ceph mgr module enable prometheus sudo ceph config set mgr mgr/prometheus/server_addr 0.0.0.0…

I show off an open-source project I started writing a RabbitMQ executor in Java. This little tool is something you can deploy on a machine in order to execute workloads from a RabbitMQ queue. The executor will run the commands defined by a file and return the result to another queue.

We look into what the error about global id reclaim when you upgrade your Ceph cluster is all about. I got this error when I installed my new cluster and had to solve the issue. After reading about the reclaim of the global id I understood that it was a really bad practice and I’m…

We look into how to use jreleaser and deploy our code to Github and creating release documentation with some simple steps.

In this video we will cover what I use in my ceph cluster. I’m not an hardware reviewer but this is an example of what kind of hardware that could be used in a ceph cluster. Especially if you want to create a cluster for home use or testing.

I will look into the PineTime watch and the code for the heartrate monitor. PineTime is a “smart” watch that you can be a part of building the software to. The code is pretty small and pretty easy to follow.