Changing config at runtime¶

In practice¶

A common use case is to enable debug logging after a failure. Use the mutable config option called ‘debug’ to do this (providing log_config_append has not been set). An admin user may perform the following steps:

1. Log onto the compute node.
2. Edit the config file (EG nova.conf) and change ‘debug’ to True.
3. Send a SIGHUP signal to the nova process (For example, pkill -HUP nova).

A log message will be written out confirming that the option has been changed. If you use a CMS like Ansible, Chef, or Puppet, we recommend scripting these steps through your CMS.