Add SSO instruction (#545)

* add sso instruction

* Update SSO.md

* Update SSO.md

README.md

@@ -108,7 +108,7 @@ To read more please follow to [chart documentation](charts/kafka-ui/README.md)
 
 # Guides
 
-To be done
+- [SSO configuration](guides/SSO.md)
 
 ## Connecting to a Secure Broker
 

guides/SSO.md

@@ -0,0 +1,48 @@
+# How to configure SSO
+SSO require additionaly to configure TLS for application, in that example we will use self-signed certificate, in case of use legal certificates please skip step 1.
+#### Step 1
+At this step we will generate self-signed PKCS12 keypair.
+``` bash
+mkdir cert
+keytool -genkeypair -alias ui-for-apache-kafka -keyalg RSA -keysize 2048 \
+  -storetype PKCS12 -keystore cert/ui-for-apache-kafka.p12 -validity 3650
+```
+#### Step 2
+Create new application in any SSO provider, we will continue with [Auth0](https://auth0.com).
+
+<img src="https://github.com/provectus/kafka-ui/raw/images/images/sso-new-app.png" width="70%"/>
+
+After that need to provide callback URLs, in our case we will use `https://127.0.0.1:8080/login/oauth2/code/auth0`
+
+<img src="https://github.com/provectus/kafka-ui/raw/images/images/sso-configuration.png" width="70%"/>
+
+This is a main parameters required for enabling SSO
+
+<img src="https://github.com/provectus/kafka-ui/raw/images/images/sso-parameters.png" width="70%"/>
+
+#### Step 3
+To launch UI for Apache Kafka with enabled TLS and SSO run following:
+``` bash
+docker run -p 8080:8080 -v `pwd`/cert:/opt/cert -e AUTH_ENABLED=true \
+  -e SECURITY_BASIC_ENABLED=true \
+  -e SERVER_SSL_KEY_STORE_TYPE=PKCS12 \
+  -e SERVER_SSL_KEY_STORE=/opt/cert/ui-for-apache-kafka.p12 \
+  -e SERVER_SSL_KEY_STORE_PASSWORD=123456 \
+  -e SERVER_SSL_KEY_ALIAS=ui-for-apache-kafka \
+  -e SERVER_SSL_ENABLED=true \
+  -e SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_AUTH0_CLIENTID=uhvaPKIHU4ZF8Ne4B6PGvF0hWW6OcUSB \
+  -e SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_AUTH0_CLIENTSECRET=YXfRjmodifiedTujnkVr7zuW9ECCAK4TcnCio-i \
+  -e SPRING_SECURITY_OAUTH2_CLIENT_PROVIDER_AUTH0_ISSUER_URI=https://dev-a63ggcut.auth0.com/ \
+  -e TRUST_STORE=/opt/cert/ui-for-apache-kafka.p12 \
+  -e TRUST_STORE_PASSWORD=123456 \
+provectuslabs/kafka-ui:0.1.0
+```
+In the case with trusted CA-signed SSL certificate and SSL termination somewhere outside of application we can pass only SSO related environment variables:
+``` bash
+docker run -p 8080:8080 -v `pwd`/cert:/opt/cert -e AUTH_ENABLED=true \
+  -e SECURITY_BASIC_ENABLED=true \
+  -e SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_AUTH0_CLIENTID=uhvaPKIHU4ZF8Ne4B6PGvF0hWW6OcUSB \
+  -e SPRING_SECURITY_OAUTH2_CLIENT_REGISTRATION_AUTH0_CLIENTSECRET=YXfRjmodifiedTujnkVr7zuW9ECCAK4TcnCio-i \
+  -e SPRING_SECURITY_OAUTH2_CLIENT_PROVIDER_AUTH0_ISSUER_URI=https://dev-a63ggcut.auth0.com/ \
+provectuslabs/kafka-ui:0.1.0
+```