Kubernetes
Choosing a postgres operator Paid Members Public
This post describes my journey on the selection of the postgres operator that matches our demand.
Why you should use rook ceph on kubernetes (onprem) Paid Members Public
If you run kubernetes on your own, you need to provide a storage solution with it. We are using ceph (operated through rook). This article gives some short overview about it's benefits and some pro's and con's of it.
Change statefulset spec without downtime Paid Members Public
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 Paid Members Public
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.
What happens if you ask kubernetes for 1254051 replicas Paid Members Public
One of our playgrounds recently had an incident which caused control-plane to go out-of-memory. This article shows how to diagnose and especially how to fix or event prevent this.
Kubernetes Cluster & self-hosted Registry: Trusting the CA Paid Members Public
You build your OnPremise Kubernetes Cluster and set up your self-hosted private registry. To make it pretty you used your own CA to sign the certificate for the registry. Everything is fine and now you are ready to deploy your own services to your Kubernetes Cluster and develop some awesome
Running postgres in kubernetes with hugepages Paid Members Public
To run postgres in a container on nodes with huge pages enabled requires you to configure the container accordingly. This post shows how to do this on kubernetes/openshift.
microk8s - change location of hostpath storage Paid Members Public
Adjusting the hostpath storage location on microk8s requires you to adjust parameters in the associated deployment. This easy change is shown in this post.
