Align oauth documentation for to the delegated auth mode

src/main/pages/che-7/end-user-guide/assembly_configuring-github-oauth.adoc

@@ -13,34 +13,38 @@ summary:
 [id="configuring-github-oauth_{context}"]
 = Configuring GitHub OAuth
 
-OAuth for GitHub allows users to clone projects using SSH addresses (git@) and push to repositories.
+OAuth for GitHub allows for automatic SSH key upload to GitHub.
 
 .Procedure
 
-To enable automatic SSH key upload to GitHub for users:
+* Set up the link:https://developer.github.com/apps/building-oauth-apps/creating-an-oauth-app[GitHub OAuth client]. The *Authorization callback URL* is filled in the next steps.
 
-. On *github.com*, click your user icon (top right).
-. Go to *Settings* > *Developer settings* > *OAuth Apps*.
-. Click the btn:[Register a new application] button.
-. In the *Application name* field, enter, for example, `{prod}`.
-. In the *Homepage URL* field, enter `{prod-url}`.
-. In the *Authorization callback URL* field, enter `{prod-url}/api/oauth/callback`.
+* For {prod-short} deployed in link:{site-baseurl}/che-7/running-che-locally/#deploying-multi-user-che-in-multi-user-mode[multi-user mode]:
+. Go to the Keycloak administration console and select the *Identity Providers* tab.
+. Select the *GitHub* identity provider in the drop-down list.
+. Paste the *Redirect URI* to the *Authorization callback URL* of the GitHub OAuth application.
+. Fill the *Client ID* and *Client Secret* from the GitHub oauth app.
+. Enable *Store Tokens*.
+. Save the changes of the Github Identity provider and click *Register application* in the GitHub oauth app page.
 +
-image::git/github_oauth.png[]
+image::git/github-keycloak-setup.png[]
 
+* If {prod-short} is deployed in single-user mode
 ifeval::["{project-context}" == "che"]
-. On OpenShift or Kubernetes, update the deployment configuration (see link:{site-baseurl}che-7/openshift-config.html[OpenShift configuration]).
+. On OpenShift or Kubernetes, update the deployment configuration (see link:{site-baseurl}che-7/advanced-configuration-options/#che-configmaps-and-their-behavior_advanced-configuration-options[{prod-short} configMaps and their behavior],
+link:{site-baseurl}che-7/advanced-configuration-options/#che-installed-using-a-helm-chart[{prod-short} installed using a Helm Chart]).
 +
 [subs=+quotes]
 ----
 CHE_OAUTH_GITHUB_CLIENTID=__<your-github-client-id>__
 CHE_OAUTH_GITHUB_CLIENTSECRET=__<your-github-secret>__
 ----
 endif::[]
-
+. In the *Authorization callback URL* field of the GitHub OAuth application, enter `__<prod-url__/api/oauth/callback`.
++
 [NOTE]
 ====
-* Substitute `{prod-url}` with the URL and port of your {prod-short} installation.
+* Substitute `_<prod-url>_` with the URL and port of the {prod-short} installation.
 
 * Substitute `_<your-github-client-id>_` and `_<your-github-secret>_` with your GitHub client ID and secret.
 

src/main/pages/che-7/end-user-guide/assembly_configuring-openshift-oauth.adoc

@@ -13,10 +13,13 @@ summary:
 [id="configuring-openshift-oauth_{context}"]
 = Configuring OpenShift OAuth
 
-OAuth for OpenShift allows to obtain OpenShift token.
+OAuth for OpenShift allows to authenticate the link:{site-baseurl}/che-7/openshift-connector-overview/[OpenShift connector plugin] in {prod-short}.
 
 .Procedure
-
+* For {prod-short} deployed in link:{site-baseurl}/che-7/running-che-locally/#deploying-multi-user-che-in-multi-user-mode[multi-user mode]:
++
+To enable OpenShift OAuth automatically, {prod-short} should be deployed with the `--os-oauth` option (see link:https://github.com/che-incubator/chectl#chectl-serverstart[chectl server:start specification]).
+* For {prod-short} deployed in single-user mode:
 . Register {prod-short} OAuth client in OpenShift (see link:https://docs.openshift.com/container-platform/4.3/authentication/configuring-internal-oauth.html#oauth-register-additional-client_configuring-internal-oauth[Register an OAuth client in OpenShift]).
 +
 [subs="+quotes,+attributes"]

src/main/pages/che-7/extensions/proc_authenticating-with-openshift-connector-in-eclipse-che.adoc

@@ -19,6 +19,7 @@ Before the user can develop and push Components from {prod-short}, they need to
 
 OpenShift Connector offers the following methods for logging in to the OpenShift Cluster from the {prod-short} instance:
 
+* Using the notification that asks to log in to the OpenShift cluster where {prod-short} is deployed to.
 * Using the btn:[Log in to the cluster] button.
 * Using the Command Palette.
 
@@ -28,6 +29,7 @@ When using a local instance of OpenShift (such as CodeReady Containers or Minish
 * A running instance of {prod-short}. To install an instance of {prod-short}, see link:{site-baseurl}che-7/che-quick-starts/[{prod-short} quick-starts].
 * A {prod-short} workspace has been created.
 * The OpenShift Connector plug-in is installed.
+* The OpenShift OAuth provider is configured (only for the auto-login to the OpenShift cluster where {prod-short} is deployed. See link:{site-baseurl}/che-7/configuring-openshift-oauth/[Configuring OpenShift OAuth]).
 
 .Procedure