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Getting started

Building the dex binary

Dex requires a Go installation and a GOPATH configured. For setting up a Go workspace, refer to the official documentation. Clone it down the correct place, and simply type make to compile the dex binary.

$ go get
$ cd $GOPATH/src/
$ make


Dex exclusively pulls configuration options from a config file. Use the example config file found in the examples/ directory to start an instance of dex with an in-memory data store and a set of predefined OAuth2 clients.

./bin/dex serve examples/config-dev.yaml

The example config file documents many of the configuration options through inline comments. For extra config options, look at that file.

Running a client

Dex operates like most other OAuth2 providers. Users are redirected from a client app to dex to login. Dex ships with an example client app (also built with the make command), for testing and demos.

By default, the example client is configured with the same OAuth2 credentials defined in examples/config-dev.yaml to talk to dex. Running the example app will cause it to query dex's discovery endpoint and determine the OAuth2 endpoints.


Login to dex through the example app using the following steps.

  1. Navigate to the example app in your browser at http://localhost:5555/ in your browser.
  2. Hit "login" on the example app to be redirected to dex.
  3. Choose the "Login with Email" and enter "" and "password"
  4. Approve the example app's request.
  5. See the resulting token the example app claims from dex.

Further reading

Dex is generally used as a building block to drive authentication for other apps. See "Writing apps that use dex" for an overview of instrumenting apps to work with dex.

For a primer on using LDAP to back dex's user store, see the OpenLDAP "Getting started" example.

Check out the Documentation directory for further reading on setting up different storages, interacting with the dex API, intros for OpenID Connect, and logging in through other identity providers such as Google, GitHub, or LDAP.

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