Logstash_Prefix. When Logstash_Format is enabled, the Index name is composed using a prefix and the date, e.g: If Logstash_Prefix is equals to 'mydata' your index will become 'mydata-YYYY.MM.DD'. The last string appended belongs to the date when the data is being generated. logstash. Logstash_DateFormat Creating Index: First, go to your browser and give your IP address followed by the port number to open Kibana. Your Kibana application gets opened. Go to the Dev Tools in the left panel and in that console, you need to add the following to create a new index. Aug 03, 2020 · For example, Filebeat records the last successful line indexed in the registry, so in case of network issues or interruptions in transmissions, Filebeat will remember where it left off when re-establishing a connection. If there is an ingestion issue with the output, Logstash or Elasticsearch, Filebeat will slow down the reading of files.