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OSMC 2021 | Introduction into OpenSearch

von | Dez 7, 2021 | NETWAYS

This entry is part 1 of 23 in the series OSMC 2021

OSMC 2021 has been over for about a month now, and it was a pretty good conference, and also my first conference at NETWAYS. The two-day conference with Workshop and Hackathon was all about open source monitoring software like Icinga2, CheckMK and Prometheus. Now I want to give you some insights about one of the talks:


About the author

Jochen Kressin, CEO of floragunn, the Company behind SearchGuard, which provides Security and Alerting for OpenSearch and ElasticSearch, introduced the audience into OpenSearch at the Open Source Monitoring Conference 2021 in Nuremberg. In his talk, he gave us an overview about the history of ElasticSearch and the reasons for the license change of ElasticStack in early 2021, which was the main reason for the emergence of OpenSearch and OpenSearch Dashboards.



OpenSearch is an open source search and analytics software suite, initiated by Amazon Web Services (AWS) and supported by other big IT companies like Red Hat and SAP. It is derived from Elasticsearch 7.10.2 and Kibana 7.10.2, which were licensed under the Apache Software License 2.0 (ASLv2). OpenSearch consists of two parts:

  • a search engine daemon called OpenSearch
  • a visualization and user interface, OpenSearch Dashboards

OpenSearch combines the features of Elasticsearch 7.10.2 with the features from Open Distro for ElasticSearch by AWS. OpenSearch was first announced in April 2021 and released in July 2021. The current Version 1.2 has been released just two weeks ago, on November 23.

But why was OpenSearch forked from ElasticSearch 7.10.2? Until January 2021, ElasticSearch had a free version with basic features using the ASLv2 and some commercial add-ons. In January 2021, ElasticSearch switched to a dual license model using the SSPL (Server-side public license) and the Elastic License v1. One month later, in February 2021, Elastic License v1 got replaced with the Elastic License v2, which is a more permissive license, but still not approved by the Open Source Initiative as an Open Source software license. The license change also means that ElasticSearch and Kibana cannot be offered as a managed service anymore. Elastic made this license change in order to prevent companies like AWS from making money with their products while not collaborating with Elastic. In other words: It is meant as a response to the continued non-collaborative engagement AWS pursued with ElasticSearch. Afterwards, AWS said that they will create and maintain a ASLv2-licensed fork of ElasticSearch and Kibana in order to ensure the availability of open source versions.


Free and Open Source Software

This raises the question of what are the benefits of FOSS (free and open source software). The goals of making open source software are getting developers on the board to contribute in order to improve the software, making the project known in the FOSS space and to increase its popularity in general. But there are also several disadvantages – many open source projects are fighting with a lack of funding, developers and time. Really successful projects are often backed by big companies or organizations, like the Apache2 Web Server (Apache Software Foundation) or Fedora Linux (Red Hat). Jochen Kressin also shared some of his thoughts about all this.

  1. Choose your weapons and license wisely
    You should fully understand what the license allows and disallows, and evaluate the advantages and disadvantages for your project
  2. Stick to your guns and license
    If you have chosen your license, stick with it.
  3. Wide adoption is often only possible with permissive license
  4. FOSS is not a business model
    it is not a means to generate revenue and can’t be the only foundation of a company

The future of OpenSearch and ElasticSearch will be very interesting. Elastic has more parts than only Kibana and ElasticSearch, it’s a whole ecosystem (with Logstash, Beats…). Building a community for the FOSS OpenSearch Project requires effort and steadiness. And enterprises require production readiness, professional services and good support (with SLAs).


Full talk and more from and about OSMC 2021

Watch the whole talk by Jochen Kressin here:

YouTube player


Since OSMC 2021 is unfortunately over we still have something for you: Did you already check out this year’s conference archives? They provide you slides and videos of each talk and also some photographs of the conference itself.

OSMC 2022 will take place from November 14 – 16 and we’re already looking forward  to meeting you all again!

Stay tuned!


Björn Berg
Björn Berg
Junior Consultant

Björn hat nach seinem Abitur 2019 Datenschutz und IT-Sicherheit in Ansbach studiert. Nach einigen Semestern entschied er sich auf eine Ausbildung zum Fachinformatiker für Systemintegration umzusteigen und fing im September 2021 bei NETWAYS Professional Services an. Auch in seiner Freizeit sitzt er viel vor seinem PC und hat Spaß mit diversen Spielen, experimentiert auch mit verschiedenen Linux-Distributionen herum und geht im Sommer gerne mal campen.

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