---
title: migration_suffix
description: If the destination index is set to MIGRATION, Curator will reindex all selected indices one by one until they have all been reindexed.  By configuring...
url: https://www.elastic.co/elastic/docs-builder/docs/3016/reference/elasticsearch/curator/option_migration_suffix
products:
  - Elasticsearch
  - Elasticsearch Curator
---

# migration_suffix
<note>
  This setting is used by the [reindex](https://www.elastic.co/elastic/docs-builder/docs/3016/reference/elasticsearch/curator/reindex) action.
</note>

If the destination index is set to `MIGRATION`, Curator will reindex all selected indices one by one until they have all been reindexed.  By configuring `migration_suffix`, a value can be appended to each of those index names.  For example, if I were reindexing `index1`, `index2`, and `index3`, and `migration_suffix` were set to `-new`, then the reindexed indices would be named `index1-new`, `index2-new`, and `index3-new`:
```yaml
actions:
  1:
    description: >-
      Reindex index1, index2, and index3 with a suffix of -new, resulting in
      indices named index1-new, index2-new, and index3-new
    action: reindex
    options:
      wait_interval: 9
      max_wait: -1
      migration_suffix: -new
      request_body:
        source:
          index: ["index1", "index2", "index3"]
        dest:
          index: MIGRATION
    filters:
    - filtertype: none
```

`migration_suffix` can be used in conjunction with [*migration_prefix*](https://www.elastic.co/elastic/docs-builder/docs/3016/reference/elasticsearch/curator/option_migration_prefix)