|  | Export journal files from devstack services | 
|  |  | 
|  | This performs a number of logging collection services | 
|  |  | 
|  | * Export the systemd journal in native format | 
|  | * For every devstack service, export logs to text in a file named | 
|  | ``screen-*`` to maintain legacy compatability when devstack services | 
|  | used to run in a screen session and were logged separately. | 
|  | * Export a syslog-style file with kernel and sudo messages for legacy | 
|  | compatability. | 
|  |  | 
|  | Writes the output to the ``logs/`` subdirectory of ``stage_dir``. | 
|  |  | 
|  | **Role Variables** | 
|  |  | 
|  | .. zuul:rolevar:: devstack_base_dir | 
|  | :default: /opt/stack | 
|  |  | 
|  | The devstack base directory. This is used to obtain the | 
|  | ``log-start-timestamp.txt``, used to filter the systemd journal. | 
|  |  | 
|  | .. zuul:rolevar:: stage_dir | 
|  | :default: {{ ansible_user_dir }} | 
|  |  | 
|  | The base stage directory. |