Ark gives you tools to back up and restore your Kubernetes cluster resources and persistent volumes. Ark lets you:

Take backups of your cluster and restore in case of loss.
Copy cluster resources across cloud providers. NOTE: Cloud volume migrations are not yet supported.
Replicate your production environment for development and testing environments.

Ark consists of:

A server that runs on your cluster
A command-line client that runs locally

Heptio Sonobuoy is a diagnostic tool that makes it easier to understand the state of a Kubernetes cluster by running a set of Kubernetes conformance tests in an accessible and non-destructive manner. It is a customizable, extendable, and cluster-agnostic way to generate clear, informative reports about your cluster.

Its selective data dumps of Kubernetes resource objects and cluster nodes allow for the following use cases:

Integrated end-to-end (e2e) conformance-testing
Workload debugging
Custom data collection via extensible plugins

Sonobuoy supports Kubernetes versions 1.9 and later.

Kubernetes is an open-source system for automating deployment, scaling, and management of containerized applications.

It groups containers that make up an application into logical units for easy management and discovery. Kubernetes builds upon 15 years of experience of running production workloads at Google, combined with best-of-breed ideas and practices from the community.

Add-ons extend the functionality of Kubernetes.

This page lists some of the available add-ons and links to their respective installation instructions.

Add-ons in each section are sorted alphabetically - the ordering does not imply any preferential status.

kubeadm helps you bootstrap a minimum viable Kubernetes cluster that conforms to best practices. With kubeadm, your cluster should pass Kubernetes Conformance tests. Kubeadm also supports other cluster lifecycle functions, such as upgrades, downgrade, and managing bootstrap tokens.

Because you can install kubeadm on various types of machine (e.g. laptop, server, Raspberry Pi, etc.), it’s well suited for integration with provisioning systems such as Terraform or Ansible.

kubeadm’s simplicity means it can serve a wide range of use cases:

New users can start with kubeadm to try Kubernetes out for the first time.
Users familiar with Kubernetes can spin up clusters with kubeadm and test their applications.
Larger projects can include kubeadm as a building block in a more complex system that can also include other installer tools.

kubeadm is designed to be a simple way for new users to start trying Kubernetes out, possibly for the first time, a way for existing users to test their application on and stitch together a cluster easily, and also to be a building block in other ecosystem and/or installer tool with a larger scope.

You can install kubeadm very easily on operating systems that support installing deb or rpm packages. The responsible SIG for kubeadm, SIG Cluster Lifecycle, provides these packages pre-built for you, but you may also on other OSes.

There are multiple ways to run a Kubernetes cluster with Ubuntu. These pages explain how to deploy Kubernetes on Ubuntu on multiple public and private clouds, as well as bare metal.

"n. person responsible for scrubbing a ship's deck."

Deckschrubber inspects images of a Docker Registry and removes those older than a given age.

NAPALM (Network Automation and Programmability Abstraction Layer with Multivendor support) is a Python library that implements a set of functions to interact with different network device Operating Systems using a unified API.

NAPALM supports several methods to connect to the devices, to manipulate configurations or to retrieve data.

NetBox is an open source web application designed to help manage and document computer networks. Initially conceived by the network engineering team at DigitalOcean, NetBox was developed specifically to address the needs of network and infrastructure engineers. It encompasses the following aspects of network management:

• IP address management (IPAM) - IP networks and addresses, VRFs, and VLANs
• Equipment racks - Organized by group and site
• Devices - Types of devices and where they are installed
• Connections - Network, console, and power connections among devices
• Virtualization - Virtual machines and clusters
• Data circuits - Long-haul communications circuits and providers
• Secrets - Encrypted storage of sensitive credentials

NetBox is an IP address management (IPAM) and data center infrastructure management (DCIM) tool. Initially conceived by the network engineering team at DigitalOcean, NetBox was developed specifically to address the needs of network and infrastructure engineers.

NetBox runs as a web application atop the Django Python framework with a PostgreSQL database. For a complete list of requirements, see requirements.txt. The code is available on GitHub.

The short answer for this one is: Unless you are running an operating system museum just use -device qemu-xhci.

Any recent operating system should support xhci out-of-the box. The only OS without xhci support which is still in widespread use is Windows 7.

In case your qemu version doesn't support qemu-xhci you can use nec-usb-xhci instead.

HashiCorp Vault secures, stores, and tightly controls access to tokens, passwords, certificates, API keys, and other secrets in modern computing. Vault handles leasing, key revocation, key rolling, and auditing. Through a unified API, users can access an encrypted Key/Value store and network encryption-as-a-service, or generate AWS IAM/STS credentials, SQL/NoSQL databases, X.509 certificates, SSH credentials, and more.

The goal of this article is to run a C program bare metal on an ARM Cortex M3. We will go through the assembler code generated from a small program written in C and come up with the prerequisites that must be in place in order for it to run.

Over the last few years I’ve written over forty blog posts that discuss ETW/xperf profiling. I’ve done this because it’s one of the best profilers I’ve ever used, and it’s been woefully undersold and under documented by Microsoft. My goal has been to let people know about this tool, make it easier for developers and users to record ETW traces, and to make it as easy as possible for developers to analyze ETW traces.