Server Recovery from Failure

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1. Describe your incident:
Graylog server died because elasticsearch was improperly upgraded to an unsupported version. Old graylog server is 4.2.13.

I was able to do a mongodump on the old environment and mongorestore to a new Graylog 5.2, opensearch 2.12 and mongo 6.0 environment. Graylog will not startup though, as it’s looking for the old indexes. Is there a way I can keep the old settings for Graylog only?

Caused by: org.graylog.shaded.opensearch2.org.opensearch.client.ResponseException: method [GET], host [http://grldca7lprdbs02.uhn.ca:9200], URI [/cluster/state/metadata/cisco*], status line [HTTP/1.1 503 Service Unavailable]

2. Describe your environment:

  • OS Information: Rocky 8.9

  • Package Version: Graylog 5.2

  • Service logs, configurations, and environment variables:

3. What steps have you already taken to try and solve the problem?

4. How can the community help?

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