delete ELK index

Go to tab “Dev Tools”
4. On the left console type:
GET _cat/indices?v&s=store.size:desc
and execute – this will show biggest ELK indices.
5. Decide which one to delete (in most cases the biggest one or couple of them, but it depends on ongoing investigations or if someone needs some data etc.).
6. To delete an index type in the console a command similar to this one (Kibana shows hints on typing):
DELETE filebeat-storm-*