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[ILM] Create API to view the steps of a policy #35404

talevy opened this Issue Nov 9, 2018 · 2 comments


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talevy commented Nov 9, 2018

Problem Statement

We have a Move-To-Step API that allows an advanced administrator to manually override the policy execution plan. It allows overriding which step in the policy is to be executed.

Without reading the code, it is almost impossible to know all the available steps one can move to.

Proposed Solution
Introduce a new API, maybe called Get Steps API.

GET _ilm/steps/<policy-id>

This will return something that shows the compiled view of the policy

  "policy": {
    "phases": {
      "hot": {
        "steps": [ "attempt_rollover", "complete" ]
      "warm": {
        "steps": [ "readonly", "forcemerge", "segment-count", "readonly", "set-single-node-allocation", "check-shrink-allocation", "shrink", "shrunk-shards-allocated", "copy_execution_state", "aliases", "is-shrunken-index", "allocate", "check-allocation"  ]

other issues: Knowing step keys is useful for working with the API, but it isn't useful in understanding why one would want to move to that step. What does that step do?

@talevy talevy added the :Core/ILM label Nov 9, 2018


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elasticmachine commented Nov 9, 2018


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talevy commented Nov 16, 2018

Closing because this type of visibility into the underlying code may do more harm than good

@talevy talevy closed this Nov 16, 2018

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