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kubejs

v1.3.1

Published

A Node.JS utility library for working with Kubernetes v1.x. This library provides some nice abstractions around the `kubectl` management that Kubernetes provides to provide some more advanced features. This assumes you are already familiar with [Kubernete

Downloads

14

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Links

Git

Maintainers

eschwartzeschwartzfour43four43

Keywords

Readme

KubeJS

A Node.JS utility library for working with Kubernetes v1.x. This library provides some nice abstractions around the kubectl management that Kubernetes provides to provide some more advanced features. This assumes you are already familiar with Kubernetes concepts and we will leave that explanation to the numerous other resources.

Build Status

Installation

  1. Ensure you have a stable version of kubectl, configured for your cluster (a context)

  2. Cloud Management (optional)

    1. Install the AWS CLI sudo pip install --upgrade awscli (working with v1.10.x)

  3. Run npm install -g kubejs and a kubejs binary will be placed on your path

Usage

kubejs is wrapped into a nice runnable script, see ~$ kubejs --help for more information.

Components have been created that correspond to Kubernetes components

Cluster

The top level cluster management.

getAllNodes(externalIpOnly)

Returns all the nodes in the currently selected cluster. May pass true/false as a filter to only get Nodes with ExternalIps

Node

Advanced Node scheduling is needed to properly scale a Kubernetes cluster. The kubectl tool doesn't provide a one-shot command to aid with that yet.

getAllPods()

Returns all Pods that are running on this Node

makeUnschedulable() / makeSchedulable()

Disable / Enable scheduling on this Node

Replication Controller

These help manage pods across the cluster so we can modify scaling.

Pod

An individual worker representing containers

getReplicationController()

Gets the Replication Controller that created this pod.

deletePod()

Deletes this pod. The Replication Controller will take of rescheduling.

Motivation

The kubectl provided by the Kubernetes team provides a great start for basic interaction with a Kubernetes cluster. We have some more advanced scheduling needs with some longer running containers and 0 downtime requirements. We use kubectl under the hood to provide JSON output to this Javascript SDK of sorts. Javascript/Node was chosen because kubectl was able to output and intake JSON as well as Node's good support for executing external tools.

Todo

  • Tests! - Mock the exec of kubectl to ensure we are sending commands properly.
  • Logo? - Every cool project has a logo