If, after working your way through each of the preceding sections, you continue to have trouble with Glance, here are a few more elements you should check. The Glance log files will often contain clues that can assist with troubleshooting. You can determine the location of the Glance log files by checking the value of the log_file or log_dir setting in the Glance configuration file. Typically, the log files for Glance will be located in the /var/log/glance/ directory. In this directory, you should find several log files including these:
api.logregistry.log
The api.log file will likely contain a bulk of clues that you need to troubleshoot Glance. It's also worth reminding you that Glance leverages Keystone for authentication. Therefore, in addition to the Glance logs, you will want to keep an eye on the Keystone logs. Similar to the Glance logs, the Keystone logs are typically located at /var/log/keystone. Refer to Chapter 2, Troubleshooting OpenStack Identity...
