The former sys admin set a Logstash - Elasticsearch - Kibana service.
The setting is:
I face many issues with this configuration.
I would like upgrade everything to 5.4.2 version and keep conf files of course .
Can I easily upgrade it ?
Thanks for your support,
Here is a guide to upgrading Elasticsearch: https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-upgrade.html
Here is an article explicitly outlining the migration from 1.x to 2.x: https://www.elastic.co/blog/key-point-to-be-aware-of-when-upgrading-from-elasticsearch-1-to-2
You might choose to upgrade one major version at a time. Elasticsearch and Logstash will upgrade from 1.4 to 2.4, then from 2.4 to 5.5.
Keep in mind that as of 5.0, all products on the Elastic stack have aligned versions so each product isn't individually versioned.
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