Online removal of a LUKS disk encryption Members Public

Believe it or not - sometimes there might be cases when you need to actually remove encryption from a system. This guide will let you know how to remove LUKS from a virtual machine when the root partition is running on this disk.

Felix Zimmermann
Linux

Prepending Environment Variables with Kyverno: Finding the Right Approach Members Public

Injecting environment variables into Kubernetes pods with Kyverno requires careful strategy. While `patchStrategicMerge` only appends to arrays, `patchesJson6902` with `add` operation at index `0` successfully prepends variables, preserving existing configurations.

Daniel Nachtrub
Daniel Nachtrub
Kubernetes

ceph 20.2.0 (tentacle) released Members Public

Ceph 20 is out - and you should get your hands on it!

Daniel Nachtrub
Daniel Nachtrub
Container

terraform actions - I like hooks and I cannot lie Members Public

Terraform 1.14 beta brings actions - a decent approach to run one shot events on state transitions. Check out this post to see an example and how it can be done already today.

Daniel Nachtrub
Daniel Nachtrub
Cloud

Using kyverno to generate secrets Members Public

Sometimes it's the little helpers that make the difference. Here's some kyverno policy you can use to generate secret values in Kubernetes through a mutating webhook.

Daniel Nachtrub
Daniel Nachtrub
Container

Helm & variable scopes Members Public

When using variables to track state across loop iterations in Helm templates, declare them outside the loop scope or they'll reset on each iteration.

Daniel Nachtrub
Daniel Nachtrub
Kubernetes

OpenVPN DCO part of linux kernel Members Public

openvpn dco will be part of linux kernel 6.16 - that's huge and you should have this on your radar to benefit from huge performance gains!

Daniel Nachtrub
Daniel Nachtrub
VPN

Terraform map expansion - interface ranges Members Public

Expanding value ranges dynamically in terraform can help you to compact your configuration and keep the focus on the values. It takes a few moments to expand the values using regex magic, still it's worth the effort!

Daniel Nachtrub
Daniel Nachtrub
Cloud