Monitoring and logging

Within a cloud environment there is a mixture of hardware, operating systems, virtual machine managers, OpenStack services, cloud-user activity (such as creating instances and attaching storage), networking, and end-users using the applications running on the various instances.

The basics of logging: configuration, setting log level, location of the log files, and how to use and customize logs, as well as how to do centralized collections of logs is well covered in the OpenStack Operations Guide.