I recently upgraded from Elasticsearch version 5.6.3 to 7.8.1 using reindex API and could observe that following policies have got created: ilm-history-ilm-policy watch-history-ilm-policy kibana-event-log-policy ml-size-based-ilm-policy slm-history-ilm-policy
We are using eck operator for installing ES v7.8.1 and am unable to find any custom policies created. Are these default policies? Can you help with any supporting documents for the same?
Those are default ILM policies created when bootstrapping a new cluster.
ilm-history-ilm-policy: whenever an ILM policy gets executed, the result of each execution (indices.lifecycle.history_index_enabled, default: true) gets logged into indexes called ilm-history-* and there's an ILM policy called ilm-history-ilm-policy governing the lifecycle of those historical indexes.slm-history-ilm-policy: Same thing whenever a snapshot policy runs, the actions are stored in an index called slm-history-* and the ILM policy called slm-history-ilm-policy governs the lifecycle of those indexeskibana-event-log-* indexes