76 lines
3.9 KiB
Markdown
76 lines
3.9 KiB
Markdown
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---
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layout: default
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title: Managed Indices
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nav_order: 3
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parent: Index State Management
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grand_parent: Index management
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redirect_from: /docs/ism/managedindices/
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has_children: false
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---
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# Managed indices
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You can change or update a policy using the managed index operations.
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This table lists the fields of managed index operations.
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Parameter | Description | Type | Required | Read Only
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:--- | :--- |:--- |:--- |
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`name` | The name of the managed index policy. | `string` | Yes | No
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`index` | The name of the managed index that this policy is managing. | `string` | Yes | No
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`index_uuid` | The uuid of the index. | `string` | Yes | No
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`enabled` | When `true`, the managed index is scheduled and run by the scheduler. | `boolean` | Yes | No
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`enabled_time` | The time the managed index was last enabled. If the managed index process is disabled, then this is null. | `timestamp` | Yes | Yes
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`last_updated_time` | The time the managed index was last updated. | `timestamp` | Yes | Yes
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`schedule` | The schedule of the managed index job. | `object` | Yes | No
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`policy_id` | The name of the policy used by this managed index. | `string` | Yes | No
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`policy_seq_no` | The sequence number of the policy used by this managed index. | `number` | Yes | No
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`policy_primary_term` | The primary term of the policy used by this managed index. | `number` | Yes | No
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`policy_version` | The version of the policy used by this managed index. | `number` | Yes | Yes
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`policy` | The cached JSON of the policy for the `policy_version` that's used during runs. If the policy is null, it means that this is the first execution of the job and the latest policy document is read in/saved. | `object` | No | No
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`change_policy` | The information regarding what policy and state to change to. | `object` | No | No
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`policy_name` | The name of the policy to update to. To update to the latest version, set this to be the same as the current `policy_name`. | `string` | No | Yes
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`state` | The state of the managed index after it finishes updating. If no state is specified, it's assumed that the policy structure did not change. | `string` | No | Yes
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The following example shows a managed index policy:
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```json
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{
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"managed_index": {
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"name": "my_index",
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"index": "my_index",
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"index_uuid": "sOKSOfkdsoSKeofjIS",
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"enabled": true,
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"enabled_time": 1553112384,
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"last_updated_time": 1553112384,
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"schedule": {
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"interval": {
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"period": 1,
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"unit": "MINUTES",
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"start_time": 1553112384
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}
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},
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"policy_id": "log_rotation",
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"policy_version": 1,
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"policy": {...},
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"change_policy": null
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}
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}
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```
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## Change policy
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You can change any managed index policy, but ISM has a few constraints in place to make sure that policy changes don't break indices.
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If an index is stuck in its current state, never proceeding, and you want to update its policy immediately, make sure that the new policy includes the same state---same name, same actions, same order---as the old policy. In this case, even if the policy is in the middle of executing an action, ISM applies the new policy.
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If you update the policy without including an identical state, ISM updates the policy only after all actions in the current state finish executing. Alternately, you can choose a specific state in your old policy after which you want the new policy to take effect.
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To change a policy using OpenSearch Dashboards, do the following:
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- Under **Managed indices**, choose the indices that you want to attach the new policy to.
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- To attach the new policy to indices in specific states, choose **Choose state filters**, and then choose those states.
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- Under **Choose New Policy**, choose the new policy.
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- To start the new policy for indices in the current state, choose **Keep indices in their current state after the policy takes effect**.
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- To start the new policy in a specific state, choose **Start from a chosen state after changing policies**, and then choose the default start state in your new policy.
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