[8.9] [DOC+] ILM min_age interpretation (#98245) #98853
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* [DOC+] ILM min_age interpretation 👋 hiya, team! From the time y'all helped me write this [ILM Troubleshooting blog](https://www.elastic.co/blog/troubleshooting-elasticsearch-ilm-common-issues-and-fixes) in 2021 and we later ported errors to [this doc](https://www.elastic.co/guide/en/elasticsearch/reference/master/index-lifecycle-error-handling.html) via #75849, the remaining top-gotcha user's raise is "Common issue 3" that ILM's `min_age` calculates off rollover time fallback index creation time. This PR cross-pollinates the blog quote into the docs so that Support can link it to users and so it becomes Google-able. > Common issue 3: min_age calculation clarification > When working with customers, I have seen confusion about how min_age works. The min_age must increase between subsequent phases. If rollover is used, min_age is calculated off the rollover date. This is because rollover generates a new index and the new index’s creation date is used in the calculation. Otherwise, min_age is calculated off the original index’s creation date. * Apply suggestions from code review --------- Co-authored-by: Abdon Pijpelink <abdon.pijpelink@elastic.co> (cherry picked from commit 93d36db)
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@elasticsearchmachine test this please |
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