Kubernetes SideCar Backup

kscb is a sidecar container, that is based upon rclone with a crontab. The sidecar container in the pod has access to the PV mount and the data on it, Rclone can then easily copy/sync to a public/private storage provider

September 29, 2021 · Dennis Kruyt

Migrate from Docker to Containerd in Kubernetes

Kubernetes is deprecating Docker as a container runtime after v1.20. Don’t Panic 😱 Docker containers are still supported, but the dockershim/Docker, the layer between Kubernetes and containerd is deprecated and will be removed from version 1.22+. https://kubernetes.io/blog/2020/12/02/dont-panic-kubernetes-and-docker/" So if you are running docker you need to change to a supported container runtime interface (CRI). containerd is a good choice, it is already running on your Kubernetes node if you are running Docker....

March 16, 2021 · Dennis Kruyt

Running a mailserver in Kubernetes

Running a webserver in Kubernetes is easy, but a mailserver is more challenging. Most of the challenging things has todo with your ip infrastructure, ingress and loadbalancer within Kubernetes. Here are things I learned when I was deploying a mailserver based on Postfix on Kubernetes with metallb and nginx ingress. If you have a different setup, things could apply or not. Prevent mail loops on your secondary MX Your postfix MX pod is running maybe on a private ip RFC1918, this is fine....

October 19, 2020 · Dennis Kruyt

Varnish in Kubernetes

This is a simple minimal but highly configurable Varnish caching service for Kubernetes. This should be placed between your ingress and your application service. simple setup It can be used in combination with multiple ingresses and application services at the same time. multiple ingress and services Setup Apply the following yaml file, replicas and environment variables can be adjusted to your need....

September 15, 2020 · Dennis Kruyt