- Oidc Documentation (#15668)

* - Oidc Documentation

* - Review Comments

openmetadata-docs/content/v1.3.x/deployment/security/oidc/index.md

@@ -0,0 +1,152 @@
+---
+title: OIDC Based Authentication
+slug: /deployment/security/oidc
+---
+
+# Setting up Any Oidc Provider
+{%important%}
+
+Security requirements for your **production** environment:
+- **DELETE** the admin default account shipped by OM in case you had [Basic Authentication](/deployment/security/basic-auth)
+  enabled before configuring the authentication with Auth0 SSO.
+- **UPDATE** the Private / Public keys used for the [JWT Tokens](/deployment/security/enable-jwt-tokens). The keys we provide
+  by default are aimed only for quickstart and testing purposes. They should NEVER be used in a production installation.
+
+{%important%}
+
+This guide provides instructions on setting up OpenID Connect (OIDC) configuration for your application. OpenID Connect is a simple identity layer built on top of the OAuth 2.0 protocol that allows clients to verify the identity of the end-user.
+Below configurations are universally applicable to all SSO provider like Google, Auth0, Okta, Keycloak, etc.
+
+Below are the configuration types to set up the OIDC Authentication with a Confidential Client type:
+
+```yaml
+  authenticationConfiguration:
+    clientType: ${AUTHENTICATION_CLIENT_TYPE:-confidential}
+    publicKeyUrls: ${AUTHENTICATION_PUBLIC_KEYS:-[http://localhost:8585/api/v1/system/config/jwks]}
+    oidcConfiguration:
+      id: ${OIDC_CLIENT_ID:-""}
+      type: ${OIDC_TYPE:-""} # google, azure etc.
+      secret: ${OIDC_CLIENT_SECRET:-""}
+      scope: ${OIDC_SCOPE:-"openid email profile"}
+      discoveryUri: ${OIDC_DISCOVERY_URI:-""}
+      useNonce: ${OIDC_USE_NONCE:-true}
+      preferredJwsAlgorithm: ${OIDC_PREFERRED_JWS:-"RS256"}
+      responseType: ${OIDC_RESPONSE_TYPE:-"code"}
+      disablePkce: ${OIDC_DISABLE_PKCE:-true}
+      callbackUrl: ${OIDC_CALLBACK:-"http://localhost:8585/callback"}
+      serverUrl: ${OIDC_SERVER_URL:-"http://localhost:8585"}
+      clientAuthenticationMethod: ${OIDC_CLIENT_AUTH_METHOD:-"client_secret_post"}
+      tenant: ${OIDC_TENANT:-""}
+      maxClockSkew: ${OIDC_MAX_CLOCK_SKEW:-""}
+      customParams: ${OIDC_CUSTOM_PARAMS:-}
+```
+# Configuration Parameters
+
+## Public Key Url (publicKeyUrls): 
+This needs to be updated as per different SSO providers. The default value is `http://localhost:8585/api/v1/system/config/jwks`. This is the URL where the public keys are stored. The public keys are used to verify the signature of the JWT token.
+
+{%important%}
+
+**Google**: https://www.googleapis.com/oauth2/v3/certs
+
+**Okta**: https://dev-19259000.okta.com/oauth2/aus5836ihy7o8ivuJ5d7/v1/keys
+
+**Auth0**: https://dev-3e0nwcqx.us.auth0.com/.well-known/jwks.json
+
+**Azure**: https://login.microsoftonline.com/{tenant}/discovery/v2.0/keys
+
+Also if you have enabled [JWT Tokens](/deployment/security/enable-jwt-tokens) then http://localhost:8585/api/v1/system/config/jwks also needs to be there in the list with proper server url.
+
+{%important%}
+
+## Client ID (id):
+The client ID provided by your OIDC provider. This is typically obtained when you register your application with the OIDC provider.
+
+## Type (type): 
+Specify the type of OIDC provider you are using (e.g., google, azure). This value is same as `provider` in `authenticationConfiguration`.
+
+## Client Secret (secret): 
+Replace with the client secret provided by your OIDC provider.
+
+## Scope (scope): 
+Define the scopes that your application requests during authentication. Update ${OIDC_SCOPE:-"openid email profile"} with the desired scopes.
+
+{%important%}
+
+It does not need to be changed in most cases. The default scopes are `openid email profile`. The openid scope is required for OIDC authentication. The email and profile scopes are used to retrieve the user's email address and profile information.
+Although, some provider only give Refresh Token if `offline_access` scope is provided. So, if you want to use Refresh Token, you need to add `offline_access` scope, like below:
+`offline_access openid email profile`.
+
+{%important%}
+
+## Discovery URI (discoveryUri): 
+Provide the URL of the OIDC provider's discovery document. This document contains metadata about the provider's configuration.
+
+{%important%}
+
+It is mostly in the format as below: https://accounts.google.com/.well-known/openid-configuration
+
+**Google**: https://accounts.google.com/.well-known/openid-configuration
+
+**Okta**: https://dev-19259000.okta.com/oauth2/aus5836ihy7o8ivuJ5d7/.well-known/openid-configuration
+
+**Auth0**: https://dev-3e0nwcqx.us.auth0.com/.well-known/openid-configuration
+
+**Azure**: https://login.microsoftonline.com/{tenant}/v2.0/.well-known/openid-configuration
+
+Normally it's some initial SSO provider URL followed by `.well-known/openid-configuration`
+
+{%important%}
+
+## Use Nonce (useNonce): 
+Set to true by Default, if you want to use nonce for replay attack protection during authentication. This does not need to be changed.
+
+## Preferred JWS Algorithm (preferredJwsAlgorithm): 
+Specify the preferred JSON Web Signature (JWS) algorithm. Default is RS256 and need not be changed .
+
+## Response Type (responseType): 
+Define the response type for the authentication request. Default is code and need not be changed.
+
+## Disable PKCE (disablePkce): 
+Set ${OIDC_DISABLE_PKCE:-true} to true if you want to disable Proof Key for Code Exchange (PKCE). If you want to send CodeVerifier and CodeChallenge in the request, set it to false.
+
+## Callback URL (callbackUrl): 
+Provide the callback URL where the OIDC provider redirects after authentication. Update ${OIDC_CALLBACK:-"http://localhost:8585/callback"} with your actual callback URL.
+
+{%important%}
+
+The only initial part of the URL should be changed, the rest of the URL should be the same as the default one. The default URL is `http://localhost:8585/callback`.
+Also, this should match what you have configured in your OIDC provider.
+
+{%important%}
+
+## Server URL (serverUrl): 
+Specify the URL of your OM Server. Default is http://localhost:8585.
+
+## Client Authentication Method (clientAuthenticationMethod): 
+Define the method used for client authentication. Default is client_secret_post.
+
+{%important%}
+
+This does not need to be changed in most cases. The default value is `client_secret_post`. 
+This method is used to send the client ID and client secret in the request body.
+Another possible value is `client_secret_basic`, which sends the client ID and client secret in the Authorization header.
+Depending on the OIDC provider, you may need to change this value if only one of them is supported.
+
+{%important%}
+
+## Tenant (tenant): 
+If applicable, specify the tenant ID for multi-tenant applications. Example in case of Azure.
+
+{%important%}
+
+This is only applicable for multi-tenant applications. If you are using a single tenant application, you can leave this field empty.
+For Azure SSO Provider this may be needed.
+
+{%important%}
+
+## Max Clock Skew (maxClockSkew): 
+Define the maximum acceptable clock skew between your application server and the OIDC server.
+
+## Custom Parameters (customParams): 
+If you have any additional custom parameters required for OIDC configuration, specify them here.