Glance is fairly straightforward and shouldn't be the source of too much trouble in your OpenStack cluster. However, if you do run into trouble, the tactics you have learned in this chapter should help you quickly troubleshoot those issues. By systematically checking the Glance services, database, authentication settings, API, and command-line interface, you should be able to quickly isolate problems and resolve them. In the next chapter, we will be looking into Neutron, the OpenStack Networking Service.