$ odo login -u developer -p developer
odo
is a cli tool for creating applications on OpenShift Container Platform and Kubernetes. odo
allows developers to concentrate on creating applications without the need to administer a cluster itself.
Creating deployment configurations, build configurations, service routes and other OpenShift Container Platform or Kubernetes elements are all automated by odo
.
Existing tools such as oc
are more operations-focused and require a deep understanding of Kubernetes and OpenShift Container Platform concepts. odo
abstracts away complex Kubernetes and OpenShift Container Platform concepts allowing developers to focus on what is most important to them: code.
odo
is designed to be simple and concise with the following key features:
Simple syntax and design centered around concepts familiar to developers, such as projects, applications, and components.
Completely client based. No additional server other than OpenShift Container Platform is required for deployment.
Official support for Node.js and Java components.
Partial compatibility with languages and frameworks such as Ruby, Perl, PHP, and Python.
Detects changes to local code and deploys it to the cluster automatically, giving instant feedback to validate changes in real time.
Lists all the available components and services from the cluster.
A project is your source code, tests, and libraries organized in a separate single unit.
An application is a program designed for end users. An application consists of multiple microservices or components that work individually to build the entire application. Examples of applications: a video game, a media player, a web browser.
A component is a set of Kubernetes resources which host code or data. Each component can be run and deployed separately. Examples of components: Node.js, Perl, PHP, Python, Ruby.
A service is software that your component links to or depends on.
Examples of services: MariaDB, Jenkins, MySQL.
In odo
, services are provisioned from the OpenShift Service Catalog and must be enabled within your cluster.
Language | Container image | Package manager |
---|---|---|
Node.js |
NPM |
|
NPM |
||
NPM |
||
NPM |
||
NPM |
||
Java |
Maven, Gradle |
|
Maven, Gradle |
||
Maven, Gradle |
The list of available container images is sourced from the cluster’s internal container registry and external registries associated with the cluster. |
To list the available components and associated container images for your cluster:
Log in to the cluster with odo
:
$ odo login -u developer -p developer
List the available odo
supported and unsupported components and corresponding container images:
$ odo catalog list components Odo Supported OpenShift Components: NAME PROJECT TAGS java openshift 8,latest nodejs openshift 10,8,8-RHOAR,latest Odo Unsupported OpenShift Components: NAME PROJECT TAGS dotnet openshift 1.0,1.1,2.1,2.2,latest fuse7-eap-openshift openshift 1.3
The TAGS
column represents the available image versions, for example, 10
represents the rhoar-nodejs/nodejs-10
container image.