Hi,
You can export data in CSV format if you go to Kibana -> Discover and click on Save. In the default visualization, the field _source is already there, so you won't have to select it again. Once you click on Save, you will have to select a name for the search:
Once you have this search saved, go to the Reporting module on the top right side and click on Generate CSV:
Once the file is generated, it will be automatically downloaded and you will see this message displayed:
Also, you can go directly to the Open Distro menu, and look for the Reporting module and check all of the generated reports from here:
You can also generate other CSV files from here.
Lastly, in order to make use of the Reporting module, you will need Open Distro v1.13.0.
Hope I was helpful. Let me know if you have any questions.
Regards,
Yana.