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minio/docs/sts/keycloak.md

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Keycloak Quickstart Guide Slack

Keycloak is an open source Identity and Access Management solution aimed at modern applications and services, this document covers configuring Keycloak to be used as an identity provider for MinIO server STS API.

1. Prerequisites

  • JAVA 1.8 and above installed
  • Download and start Keycloak server by following the installation guide (finish upto section 3.4)

2. Configure Keycloak

  • Go to Users -> Click on the user -> Attribute, add a new attribute Key is policy, Value is name of the policy in minio (ex: readwrite). Click Add and then Save.
  • Go to Clients -> Click on account -> Settings, set Valid Redirect URIs to *, expand Advanced Settings and set Access Token Lifespan to 1 Hours, then Save.
  • Go to Clients -> Client on account -> Mappers -> Create, Name can be any text, Mapper Type is User Attribute, User Attribute is policy, Token Claim Name is policy, Claim JSON Type is string, then Save.
  • Open http://localhost:8080/auth/realms/demo/.well-known/openid-configuration and see if it has authorization_endpoint and jwks_uri

3. Configure MinIO

$ export MINIO_ACCESS_KEY=minio
$ export MINIO_SECRET_KEY=minio123
$ minio server /mnt/export

Set identity_openid config and restart MinIO

~ mc admin config set myminio identity_openid config_url="http://localhost:8080/auth/realms/demo/.well-known/openid-configuration" state="on"

Once successfully set restart the MinIO instance.

mc admin service restart myminio

4. Using WebIdentiy API

Client ID and Client Secret can be found by clicking any of the clients listed here. If you have followed the above steps docs, the default Client ID will be account and Client Secret can be found under Credentials tab.

$ go run web-identity.go -cid account -csec e61cb282-745b-4113-bece-29b921c735f0 -auth-ep http://localhost:8080/auth/realms/demo/protocol/openid-connect/auth -token-ep http://localhost:8080/auth/realms/demo/protocol/openid-connect/token -port 8888
2018/12/26 17:49:36 listening on http://localhost:8888/

This will open the login page of keycloak, upon successful login, STS credentials will be printed on the screen, for example

##### Credentials
{
	"accessKey": "6N2BALX7ELO827DXS3GK",
	"secretKey": "23JKqAD+um8ObHqzfIh+bfqwG9V8qs9tFY6MqeFR",
	"expiration": "2019-10-01T07:22:34Z",
	"sessionToken": "eyJhbGciOiJIUzUxMiIsInR5cCI6IkpXVCJ9.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._UG_-ZHgwdRnsp0gFdwChb7VlbPs-Gr_RNUz9EV7TggCD59qjCFAKjNrVHfOSVkKvYEMe0PvwfRKjnJl3A_mBA"
}

These credentials can now be used to perform MinIO API operations.

5. Using MinIO Browser

  • Open MinIO url on the browser, for example http://localhost:9000
  • Click on Log in with OpenID
  • Provide Client ID and press ENTER
  • Now the user will be redirected to the Keycloak login page, upon successful login the user will be redirected to MinIO page and logged in automatically

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