How to run Graylog 6, MongoDB and Opensearch in a Docker Stack

[schneich (Chris)]

for the record: this is how I finally upgraded from 5.2 to 6.0.1:

Update Graylog Docker Stack from 5.2 to 6.0.1, incl. change from Elasticsearch to Opensearch and upgrade mongodb

Dear community, during the last couple of days, I was trying to upgrade my Docker Graylog Stack. I ran into several issues and finally managed to solve them all. I thought it worth while to document, so that others can benefit from my learning curve. Background This was my initial post: Change from Elasticsearch to opensearch: Node ID problem Then I got it running successfully - as a new, empty environment: How to run Graylog 6, MongoDB and Opensearch in a Docker Stack My Do…