kbrew

kbrew

kbrew is to Kubernetes what Homebrew is to MacOS - a simple and easy to use package manager which hides the underlying complexity.

Let's talk in context of an example of at installing Kafka on a Kubernetes cluster

• You need cert manager & Zookeeper & kube-prometheus-stack for monitoring installed
• Zookeeper is a operator so you need to create a CR of Zookeeper cluster after installation of operator.
• Then install Kafka operator
• Create a CR of Kafka and wait for everything to stabilize.
• Create ServieMonitor resources to enable prom scraping

With kbrew all of this happens with a single command (This command will change in near future):

$ kbrew install kafka-operator

Helm chart or operator or Manifests - all abstracted

Kbrew abstracts the underlying chart or operator or manifest and gives you a recipe to install a stack with all basic configurations done.

Installation

Install the pre-compiled binary

$ curl -sfL https://raw.githubusercontent.com/kbrew-dev/kbrew/main/install.sh | sh

Compiling from source

Step 1: Clone the repo

$ git clone https://github.com/kbrew-dev/kbrew.git

Step 2: Build binary using make

$ make

CLI Usage

For a quick demo, watch: https://www.youtube.com/watch?v=pWRZhZgfYSw

kbrew install

Installs a recipe in your cluster with all pre & posts steps and applications.

kbrew search

Searches for a recipe for the given application. Lists all the available recipes if no application name is passed.

kbrew update

Checks for kbrew updates and upgrades automatically if a newer version is available. Fetches updates for all the kbrew recipe registries

kbrew remove

Partially implemented as of now.

Terminology

Recipe

A recipe defines the end to end installation of a set of things along with some custom steps and metadata. Checkout kafka-operator.yaml or similar recipes in context of the terms being explained here. All public recipes are maintained in the repo https://github.com/kbrew-dev/kbrew-registry

Repository

A repository has a name, type and a URL and based on type, there are two ways you can define a repo:

Helm

You use the base URL of the Chart repo and name of chart to be used along with the type as helm

  repository:
    name: banzaicloud-stable
    url: https://kubernetes-charts.banzaicloud.com
    type: helm

Raw

You can use a URL to a operator or a RAW yaml file with type raw

app:
  repository:
    name: cert-manager
    url: https://github.com/jetstack/cert-manager/releases/download/v0.10.1/cert-manager.yaml
    type: raw

Pre_Install & Post_Install

Every recipe has a bunch of pre & post install activities. There are two types supported today:

Points to other formulas in repo

Custom step - which can be inline commands or scripts etc.