This short tutorial on Elasticsearch dynamic templates using match_mapping_type will teach you how to control the mappings of the dynamically added fields in Elasticsearch. If you are reading this then it means that you understand the importance of mappings and how to manage them using templates. Elasticsearch dynamic templates are a natural progression of templates.… Read More »
In this post on Elasticsearch Update by Query API, I will show the real world use of this API, what it can do and what it can’t. And why you should strive to not be in a situation which warrants the use of this API in the first place.
This post will show how to extract filename from filebeat shipped logs, using elasticsearch pipelines and grok. I will also show how to deal with the failures usually seen in real life. With that said lets get started.
This Elasticsearch error: No handler for type [string] declared on field is often seen after an “innocent” upgrade from Elasticsearch 5.x to 6.x. Classic sign is that the new indices do not get created. I faced this error when using Serilog to push data into the Elasticsearch cluster after upgrade. It is frustrating as it… Read More »
This tutorial on using Filebeat to ingest apache logs will show you how to create a working system in a jiffy. I will not go into minute details since I want to keep this post simple and sweet. I will just show the bare minimum which needs to be done to make the system work.
This tutorial on managing Elasticsearch aliases using Curator will help you to manage your Elasticsearch aliases better. There are not many detailed tutorials on this topic and hence this post. I hope that at the end of this tutorial you will appreciate the power curator brings to your hands.
This tutorial on taking Elasticsearch snapshots using curator will be divided into sections. One obvious section is how to take snapshots. Other less obvious part will be on configuring a shared directory using Network file sharing on Linux. I will be using a RHEL 7 based cluster of three machines for this tutorial. Once you… Read More »
Authentication in Elasticsearch without using x-pack or shield. Possible? Yes. In this post I will show you how to do it using excellent readonlyrest plugin written by sscarduzio. The reason I used this plugin was the ease of use as well as the way it works. That it is listed on Elastic website itself as… Read More »
This tutorial demonstrates Structured Logging using Serilog with ElasticSearch serving as the backend log repository. This post is a follow up on the beginner post I wrote on Serilog. If you are a starter on Serilog then I will recommend that you give a quick read to that post. As usual I will start with… Read More »
This ElasticSearch Sample Data is to be used for learning purpose only. It is randomly generated but still care has been taken to make it look like real world data.