We are using fluentd to send logs to ElasticSearch:
<store> @type elasticsearch host elasticsearch port 9200 logstash_format true index_name logstash type_name logstash </store>
For some reasons, sometimes index is not being created, and Kibana has nothing to display in Last 7 days.
I would like to monitor this situation to send me an alert whenever it happens. In Kibana, we have a graph that displays the number of messages per 30 seconds (for logstash-* index). What is the corresponding metric in ElasticSearch: https://github.com/influxdata/telegraf/tree/master/plugins/inputs/elasticsearch
so I can add metrics and setup an alert for it in Grafana?