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Published: Apr 23, 2019 License: Apache-2.0


<img align="right" role="right" width="180" src="/docs/img/openshift.png?raw=true"/>
= `odo` - Developer-focused CLI for OpenShift
:toc: macro
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== Overview

OpenShift Do (`odo`) is a fast, iterative, and straightforward CLI tool for developers who write, build, and deploy applications on OpenShift.

Existing tools such as `oc` are more operations-focused and require a deep-understanding of Kubernetes and OpenShift concepts. `odo` abstracts away complex Kubernetes and OpenShift concepts, thus allowing developers to focus on what is most important to them: code.

== Key features

`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 project, application, and component.
* Completely client based. No server is required within the OpenShift cluster for deployment.
* Supports multiple languages and frameworks such as Node.js, Java, 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 available components and services from the OpenShift cluster.

== Installing `odo`


* OpenShift 3.10.0 and above is required.
* We recommend using link:https://github.com/minishift/minishift[Minishift].


=== OS-independent automated installation

Use this link:./scripts/install.sh[bash script] to quickly install `odo`. It will automatically detect your operating system and install `odo` accordingly.

$ curl -L https://github.com/openshift/odo/raw/master/scripts/install.sh | bash

=== macOS

*Binary installation:*

# curl -L https://github.com/openshift/odo/releases/download/v1.0.0-beta1/odo-darwin-amd64 -o /usr/local/bin/odo && chmod +x /usr/local/bin/odo

*Tarball installation:*

# sh -c 'curl -L https://github.com/openshift/odo/releases/download/v1.0.0-beta1/odo-darwin-amd64.gz | gzip -d > /usr/local/bin/odo; chmod +x /usr/local/bin/odo'

=== Linux

*Binary installation:*

# curl -L https://github.com/openshift/odo/releases/download/v1.0.0-beta1/odo-linux-amd64 -o /usr/local/bin/odo && chmod +x /usr/local/bin/odo

*Tarball installation:*

# sh -c 'curl -L https://github.com/openshift/odo/releases/download/v1.0.0-beta1/odo-linux-amd64.gz | gzip -d > /usr/local/bin/odo; chmod +x /usr/local/bin/odo'

=== Windows

In order to correctly use `odo` you must download it and add it
to your PATH environment variable:

. Download the `odo-windows-amd64.exe.gz` file from the
link:https://github.com/openshift/odo/releases[GitHub releases page].
. Extract the file.
. Add the location of extracted binary to your PATH environment
variable by following the steps listed in this link:https://github.com/openshift/odo/wiki/Setting-PATH-variable-on-Windows[Wiki page].

For a list of other methods such as installing the latest binary or specific OS installations, visit the link:/docs/installation.md[installation page].

== Demonstration

The following demonstration provides an overview of `odo`:


== Deploying an application using `odo`

After installing `odo`, follow these steps to build, push, and
deploy a Node.js application. Examples for other supported languages and runtimes can be found link:https://github.com/openshift/odo/blob/master/docs/examples.md[here].

. Start a local OpenShift development cluster by running minishift.
$ minishift start
. Log into the OpenShift cluster.
$ odo login -u developer -p developer
. Create an application. An application in `odo` is an umbrella
under which you add other components.
$ odo app create node-example-app
. Download the Node.js sample code and change directory to the
location of the sample code.
$ git clone https://github.com/openshift/nodejs-ex
$ cd nodejs-ex
. Add a component of type `nodejs` to your application.
$ odo create nodejs
. Deploy your application.
$ odo push
. Create a URL to access the application and visit it to test it.
$ odo url create
$ curl nodejs-myproject.

For more in-depth information and advanced use-cases such as adding storage to a component or linking components, see the
link:https://learn.openshift.com/introduction/developing-with-odo/[interactive tutorial] or the link:/docs/getting-started.md[Getting Started Guide].

== Additional documentation

Additional documentation can be found below:

* link:https://github.com/openshift/odo/blob/master/docs/installation.md[Detailed
Installation Guide]
* link:https://github.com/openshift/odo/blob/master/docs/getting-started.md[Getting
Started Guide]
* link:https://github.com/openshift/odo/blob/master/docs/examples.md[Usage
Examples for Other Languages and Runtimes]
* link:https://github.com/openshift/odo/blob/master/docs/cli-reference.md[CLI
* link:https://github.com/openshift/odo/blob/master/docs/development.md[Development

== Community, discussion, contribution, and support

*Chat:* We have a public channel link:https://chat.openshift.io/developers/channels/odo[#odo on

*Issues:* If you have an issue with `odo`, please link:https://github.com/openshift/odo/issues[file it].

*Contributing:* Want to become a contributor and submit your own code?
Have a look at our link:https://github.com/openshift/odo/blob/master/docs/development.md[Development Guide].

== Glossary

*Application:* An application consists of multiple microservices or components that work individually to build the entire application.

*Component:* A component is similar to a microservice. Multiple
components make up an application. A component has different attributes like storage. `odo` supports multiple component types like nodejs, perl, php, python, and ruby.

*Service:* Typically a service is a database or a service that a
component links to or depends on. For example: MariaDB, Jenkins, MySQL.
This comes from the OpenShift Service Catalog and must be enabled within your cluster.

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