JMeter offers a possibility to send live metrics from the running test to InfluxDB (see details in the related JMeter documentation). This will help you to monitor current behaviour of your test and the service under the test. InfluxDB installed in your cluster is required to enable this functionality.
Note: InfluxDB is not the part of Kangal, read more about it in InfluxDB official documentation.
You can use InfluxDB as a datasource for Grafana and create a set of useful graphs.
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JMeter also offers a functionality to generate HTML report dashboards after the end of the test. Read more about it in official JMeter documentation.
The hellofresh/kangal-jmeter docker image implements this functionality.
The CSV file containing all requests will be persisted within the reports, you can get this file from the report using the following URL:
https://${KANGAL_PROXY_ADDRESS}/load-test/{loadtest-name}/report/results.csv
To read more about the REST API, check User Flow documentation