In this chapter, we looked at how to resolve common issues with the Identity service. We learned how to tell which version of the Keystone API we are using and also looked at how to use the command-line interface clients to troubleshoot. We made calls to the Identity API in order to confirm that Keystone was running as expected and learned to troubleshoot issues with the Keystone database. We also checked the service catalog to make sure endpoints were properly configured and successfully ran Keystone as a WSGI application under Apache.

Keystone plays a central role in the successful operation of an OpenStack cluster. Each of the other OpenStack services depend on Keystone and the functionality it provides. As a result, successful troubleshooters will need to make sure that Keystone is running correctly. In the next chapter, we will look at how to troubleshoot the OpenStack Image service, code named Glance.