@npm-wharf/auto-kubernetes-client
v0.6.1
Published
NodeJS Kubernetes Client with automatic API discovery
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auto-kubernetes-client
NodeJS Kubernetes Client with automatic API discovery.
See this blog post for further information.
Installation
npm install --save auto-kubernetes-client
Usage
Create a configuration object
const config = { url: 'https://k8s.example.com', ca: 'PEM encoded CA certificate', cert: 'PEM encoded client certificate', key: 'PEM encoded client key' }
Create the client and connect to the API server
const AutoK8sClient = require('auto-kubernetes-client'); AutoK8sClient(config, function(err, client) { if (err) { throw new Error(`Error when connecting: ${err.message}`); } // Use client });
Invoke methods
The client exposes resources available to the authenticated user using a fairly regular API.
- API groups need to be selected using the
group(name[, version])
method. The "core" API is available directly on theclient
instance. - Non-namespaced resources are available directly on the API instance (core/group), for namespaced-resources
one must explicitly select the namespace using the
ns(name)
method. - Resource collections are available by their name in plural, for example
client.ns('default').pods
represents the "pods" resource collection. Resource collections offer resource methodslist
,watch
, anddeletecollection
, as well ascreate
to create a new resource. - Single (non-collection) resources are available by their singular name, for example
client.ns('default').pod('pod1')
represents the "pod" resources for the "pod1" pod. Single resources offer resource methodsget
,create
,update
,patch
anddelete
. - Resource methods typically have the signature
method([qs])
, whereqs
is a hash for additional query parameters, and return a promise for the parsed response entity. - The
watch
resource method has the signaturewatch([resourceVersion[, qs]])
, and returns an object stream for the observed changes. Each object has atype
field ('ADDED', 'DELETED', 'MODIFIED', 'ERROR'), and the actual object that was modified. - By default the client interprets 'Status' responses from the server with a 'Failure' status as error responses, and translates them into actual promise rejections. This can be disabled by using '.options({ rawResponse: true}).resourceMethod(...)' on the resource collection or resource.
- API groups need to be selected using the
Examples
| Example | Description |---------|------------ |examples/list-pods|List all pods in the cluster |examples/watch-pods|Watch all pods in a specific namespace
License
This software is licensed under the Apache 2 license, quoted below.
Copyright 2017 Collaborne B.V. <http://github.com/Collaborne/>
Licensed under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy of
the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
License for the specific language governing permissions and limitations under
the License.