Moving an elasticsearch index to another node
When hosting a multinode elasticsearch cluster, you might run in some state where indices are not equally balanced across your nodes, until one of them starts crying about high disk usage while other nodes are barely occupied - exactly this happened in one of our customers environment. In order to
Windows 11 - enable seconds on clock (again) - may 2023 update
Windows 11's patch of may 2023 brings back seconds to the system-clock - if you enable it through registry. Let's do this!
Configure maximum live migrations on Windows Server 2022 (cluster) / Azure Stack HCI
Just a very quick information. In case you are running a Windows Server 2022 based cluster (the same applies to Azure Stack HCI) and you wonder why it keeps reverting the per-host configuration of live-migrations (like if you set it using Set-VMHost), the reason is that this setting is nowadays
Migrate a netadapter configuration in an atomic command
You know the situation: You need to perform multiple commands that will disconnect you in the middle. Functions to the rescue!
Kubernetes v1.27 - what's new
Kubernetes 1.27 is released! Having the fancy name Chill Vibes it brings up to 60 enhancements. I've picked a few to highlight them in this post. Image registry change to registry.k8s.io This change has been active for several months already - the kubernetes image registry is migrated
Change statefulset spec without downtime
Altering statefulsets on kubernetes can be tricky - as statefulsets are very common used for persistent applications like databases recreation is no option. This guide shows a path around some of these limitations.
Linux kernel keyrings, container isolation and maybe some kerberos
On a recent project I've been stumbling on the case that kerberos tickets have been inadvertently shared across containers on a node - which obviously caught my attention as I'm not keen on sharing such secrets across workloads. This post describes why this happens and what to do to prevent this.
Kubernetes 1.26 on Ubuntu 22.04 LTS
Ubuntu is a very suitable distribution to run kubernetes because we have an up to date kernel with up to date features and packages are available widely. Running kubernetes on Ubuntu is straight forward - except it requires packages that are newer than the upstream provides. This is the case