[GitHub] [kylin] xiacongling opened a new pull request #931: KYLIN-4240 use kylin SSO without LDAP

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xiacongling opened a new pull request #931: KYLIN-4240 use kylin SSO without LDAP
URL: https://github.com/apache/kylin/pull/931
 
 
   KYLIN-4240 use kylin SSO without LDAP. see: https://issues.apache.org/jira/browse/KYLIN-4240
   
   ## add additional profile
   first we change `kylin.sh` to support multiple profiles (`spring.profiles.active` can accept a list of profiles)
   ```
   additional_security_profiles=`bash ${dir}/get-properties.sh kylin.security.additional-profiles`
   if [[ "x${additional_security_profiles}" != "x" ]]; then
       spring_profile="${spring_profile},${additional_security_profiles}"
   fi
   ```
   We use `custom` security profile and a additional `authn-cas` profile to enable it.
   ```
   kylin.security.profile=custom
   kylin.security.additional-profiles=authn-cas
   ```
   
   ## beans and security settings for CAS
   Then we add the CAS security context to the classpath, here we put it in `server/resources/kylin-security-cas-plugin.xml` as a plugin. define the following beans under `authn-cas` profile:
   ```
   <beans profile="authn-cas">
    ...
    <spring-security:http pattern="/cas/**">
     ...
    </spring-security:http>
   </beans>
   ```
   in security http settings, the CAS filter only applied on `/cas/**`. see the code for details.
   
   ## UI update
   In front-end, a button is added to redirect to the CAS server.
   
   ![](https://issues.apache.org/jira/secure/attachment/12985571/screenshot.png)
   
   User can now login with either username/password or SSO, and their groups can be managed in the `System` tab.
   
   ## Other improvement
   - automatically add an admin user if there is none (controlled by `kylin.security.create-admin-when-absent`)
   - change to `kylinSecurityProfile()` instead of `spring.profiles.active` to avoid mismatch
   - fix ehcache settings for `custom` profile
   - SAML without LDAP plugin (see `server/resources/kylin-security-saml-noldap-plugin.xml`)
   
   ## Appendix: properties for CAS
   ```
   ## Security settings, enable CAS
   kylin.security.profile=custom
   kylin.security.additional-profiles=authn-cas
   
   ## CAS properties
   # kylin server url should be set for CAS callback, values should be set properly
   kylin.server.url=http://localhost:7070/kylin
   
   # change the cas server 
   kylin.security.cas.server.prefix=https://cas.example.com/
   kylin.security.cas.server.login-url=https://cas.example.com/login
   kylin.security.cas.server.logout-url=https://cas.example.com/logout
   
   # optional properties, default values are listed below
   #kylin.security.cas.default-groups=ALL_USERS
   #kylin.security.cas.service-param=service
   #kylin.security.cas.artifact-param=ticket
   ```

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