Popular sorting algorithms all build from two facts. 1. That any element is out of place if it’s larger than any other element with a larger index. 2. We grow a sorted subarray by swapping out of order elements.

Every once in a while, you need to install a helm chart that corresponds with already existing resources. Usually, when trying to use a helm chart to have more control over a kube-system daemonset or operator: aws-node, coreDNS, or kube-proxy for instance. But if you try to install their helm chart you can get Error: INSTALLATION FAILED: rendered manifests contain a resource that already exists. You can get helm to adopt resources by using the correct annotation/labels.

controller-runtime is a SIG project that makes building Controllers (or other native k8s apps) easier. But their client isn’t completely automagic like client-go. Below is an outline of the basic CRUD and useful links for finding the missing info faster.

When automating tasks with python scripts, you can hit a wall with SSO and oauth2. Creating a local chrome profile in your XDG data directory can allow one SSO login per work day and your python scripts can re-use the sessions.