cd054c71af
Serviceaccount annotation in oc patch instruction was malformed. Format specification of Client ID for a Service Account was missing.
79 lines
3.1 KiB
Markdown
79 lines
3.1 KiB
Markdown
# Authentication using OpenShift
|
|
|
|
## Overview
|
|
|
|
Dex can make use of users and groups defined within OpenShift by querying the platform provided OAuth server.
|
|
|
|
## Configuration
|
|
|
|
|
|
### Creating an OAuth Client
|
|
|
|
Two forms of OAuth Clients can be utilized:
|
|
|
|
* [Using a Service Account as an OAuth Client](https://docs.openshift.com/container-platform/latest/authentication/using-service-accounts-as-oauth-client.html) (Recommended)
|
|
* [Registering An Additional OAuth Client](https://docs.openshift.com/container-platform/latest/authentication/configuring-internal-oauth.html#oauth-register-additional-client_configuring-internal-oauth)
|
|
|
|
#### Using a Service Account as an OAuth Client
|
|
|
|
OpenShift Service Accounts can be used as a constrained form of OAuth client. Making use of a Service Account to represent an OAuth Client is the recommended option as it does not require elevated privileged within the OpenShift cluster. Create a new Service Account or make use of an existing Service Account.
|
|
|
|
Patch the Service Account to add an annotation for location of the Redirect URI
|
|
|
|
```
|
|
oc patch serviceaccount <name> --type='json' -p='[{"op": "add", "path": "/metadata/annotations/serviceaccounts.openshift.io/oauth-redirecturi.dex", "value":"https:///<dex_url>/callback"}]'
|
|
```
|
|
|
|
The Client ID for a Service Account representing an OAuth Client takes the form `system:serviceaccount:<namespace>:<service_account_name>`
|
|
|
|
The Client Secret for a Service Account representing an OAuth Client is the long lived OAuth Token that is configued for the Service Account. Execute the following command to retrieve the OAuth Token.
|
|
|
|
```
|
|
oc serviceaccounts get-token <name>
|
|
```
|
|
|
|
#### Registering An Additional OAuth Client
|
|
|
|
Instead of using a constrained form of Service Account to represent an OAuth Client, an additional OAuthClient resource can be created.
|
|
|
|
Create a new OAuthClient resource similar to the following:
|
|
|
|
```yaml
|
|
kind: OAuthClient
|
|
apiVersion: oauth.openshift.io/v1
|
|
metadata:
|
|
name: dex
|
|
# The value that should be utilized as the `client_secret`
|
|
secret: "<clientSecret>"
|
|
# List of valid addresses for the callback. Ensure one of the values that are provided is `(dex issuer)/callback`
|
|
redirectURIs:
|
|
- "https:///<dex_url>/callback"
|
|
grantMethod: prompt
|
|
```
|
|
|
|
### Dex Configuration
|
|
|
|
The following is an example of a configuration for `examples/config-dev.yaml`:
|
|
|
|
```yaml
|
|
connectors:
|
|
- type: openshift
|
|
# Required field for connector id.
|
|
id: openshift
|
|
# Required field for connector name.
|
|
name: OpenShift
|
|
config:
|
|
# OpenShift API
|
|
issuer: https://api.mycluster.example.com:6443
|
|
# Credentials can be string literals or pulled from the environment.
|
|
clientID: $OPENSHIFT_OAUTH_CLIENT_ID
|
|
clientSecret: $OPENSHIFT_OAUTH_CLIENT_SECRET
|
|
redirectURI: http://127.0.0.1:5556/dex/
|
|
# Optional: Specify whether to communicate to OpenShift without validating SSL ceertificates
|
|
insecureCA: false
|
|
# Optional: The location of file containing SSL certificates to commmunicate to OpenShift
|
|
rootCA: /etc/ssl/openshift.pem
|
|
# Optional list of required groups a user mmust be a member of
|
|
groups:
|
|
- users
|
|
```
|