wksctl allows simple creation of a Kubernetes cluster given a set of IP addresses and an SSH key. It can be run in a standalone environment but is best used via a GitOps approach in which cluster and machine descriptions are stored in Git and the state of the cluster tracks changes to the descriptions.
Searchlight by AppsCode is a Kubernetes operator for Icinga. If you are running production workloads in Kubernetes, you probably want to be alerted when things go wrong. Icinga periodically runs various checks on a Kubernetes cluster and sends notifications if detects an issue. It also nicely supplements whitebox monitoring tools like, Prometheus with blackbox monitoring can catch problems that are otherwise invisible, and also serves as a fallback in case internal systems completely fail. Searchlight is a TPR controller for Kubernetes built around Icinga to address these issues.
watchtower - Automatically update running Docker containers
You login to a Linux server with a performance issue: what do you check in the first minute?
The Utilization Saturation and Errors (USE) Method is a methodology for analyzing the performance of any system.
Open Source abusemanagement for network operators