Monitoring ES mappings

Elastic Stack Elasticsearch
1

I just found out nice article on watcher, how it can send notifications.
I want to use a watcher that can trigger an action whenever a mapping has been changed in one of the doc type.

Please suggest if this is the right way or there exists any other way to perform same notification process.

2

Mapping updates are reported in the logs of the cluster master, so you could process and check those.

Not sure if there is a direct way within Watcher to do this.