# ILM - Alias inheritance

**URL:** <https://discuss.elastic.co/t/ilm-alias-inheritance/285058>\
**Category:** Elasticsearch\
**Tags:** ilm-index-lifecycle-management\
**Created:** [September 24, 2021, 8:30am UTC](https://discuss.elastic.co/t/ilm-alias-inheritance/285058 "2021-09-24T08:30:36Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![ORich](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/orich/32/21675_2.png) [@ORich](https://discuss.elastic.co/u/ORich)\
**Post date:** [September 24, 2021, 8:30am UTC](https://discuss.elastic.co/t/ilm-alias-inheritance/285058/1 "2021-09-24T08:30:36Z")

</div>

Dear experts,  
here is my ILM managed mongodb index in hot lifecycle phase

```auto
{
  "fbeat-7.10.2-mongodb-2021.08.23-000009" : {
    "aliases" : {
      "fbeat-7.10.2-mongodb" : {
        "is_write_index" : true
      },
      "filebeat-7.10.2-mongodb" : { }
    }
  }
}

```

When this index moves from hot to warm the shrinked index inherits alias filebeat-7.10.2-mongodb as you can check:

```auto
  "shrink-fbeat-7.10.2-mongodb-2021.08.23-000009" : {
    "aliases" : {
      "filebeat-7.10.2-mongodb" : { }
    }

```

However, the alias filebeat-7.10.2-mongodb is not propagated to the new ILM managed mongodb index in hot lifecycle phase:

```auto
{
  "fbeat-7.10.2-mongodb-2021.09.22-000010" : {
    "aliases" : {
      "fbeat-7.10.2-mongodb" : {
        "is_write_index" : true
      }
    }
  }
}

```

Is it the expected behavior i.e. working as designed ? If yes, any advice to ensure alias inheritance ? Many thanks in advance.

Have a good day.

---

<div class="post-metadata">

**Author:** ![ORich](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/orich/32/21675_2.png) [@ORich](https://discuss.elastic.co/u/ORich)\
**Post date:** [September 27, 2021, 9:09am UTC](https://discuss.elastic.co/t/ilm-alias-inheritance/285058/2 "2021-09-27T09:09:24Z")

</div>

Here is a similar post 2 years ago : [ILM multiple aliases](https://discuss.elastic.co/t/ilm-multiple-aliases/202035) which did not get any answer ... 🤔

---

<div class="post-metadata">

**Author:** ![ORich](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/orich/32/21675_2.png) [@ORich](https://discuss.elastic.co/u/ORich)\
**Post date:** [September 28, 2021, 2:19pm UTC](https://discuss.elastic.co/t/ilm-alias-inheritance/285058/3 "2021-09-28T14:19:21Z")

</div>

As a workaround, I sent periodically this request:

```auto
    - name: Setup alias to fbeat-* indices as inputs for dashboards and Kibana index patterns
      uri:
        url: http://localhost:9200/_aliases
        body_format: json
        method: POST
        body:
          actions:
            - add:
                index: fbeat-{{elasticsearch_version}}-{{item}}-*
                alias: filebeat-{{elasticsearch_version}}-{{item}}

```

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [October 26, 2021, 2:20pm UTC](https://discuss.elastic.co/t/ilm-alias-inheritance/285058/4 "2021-10-26T14:20:18Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.