# Azure append Blobs

**URL:** <https://discuss.elastic.co/t/azure-append-blobs/320537>\
**Category:** Beats\
**Tags:** filebeat\
**Created:** [December 6, 2022, 7:50am UTC](https://discuss.elastic.co/t/azure-append-blobs/320537 "2022-12-06T07:50:18Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![lars-s](https://avatars.discourse-cdn.com/v4/letter/l/22d042/32.png) [@lars-s](https://discuss.elastic.co/u/lars-s)\
**Post date:** [December 6, 2022, 7:50am UTC](https://discuss.elastic.co/t/azure-append-blobs/320537/1 "2022-12-06T07:50:18Z")

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Hi,  
i'm new here.

I've an problem to read from an azure append blob file with filebeat.

i use this configuration:

```auto
 - type: azure-blob-storage
          id: my-azureblobstorage-id
          enabled: true
          account_name: ""
          auth.shared_credentials.account_key: ""
          containers:
          - name: commerce-logs-separated
            max_workers: 3
            poll: true
            poll_interval: 10s

```

But the message i've got is:

`content-type application/octet-stream not supported`

Thanks in advance for help.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [January 3, 2023, 9:51am UTC](https://discuss.elastic.co/t/azure-append-blobs/320537/2 "2023-01-03T09:51:12Z")

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

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**Author:** ![strawgate](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/strawgate/32/131008_2.png) [@strawgate](https://discuss.elastic.co/u/strawgate)\
**Post date:** [March 1, 2025, 6:19pm UTC](https://discuss.elastic.co/t/azure-append-blobs/320537/3 "2025-03-01T18:19:55Z")

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Two problems:

1. We do not support Append-type blobs with Filebeat, each time an append occurs we will treat it as if it was a new file and process the entire file again. See my recent comment on another person's post [I want to read an append-format Blob file with filebeat - #2 by strawgate](https://discuss.elastic.co/t/i-want-to-read-an-append-format-blob-file-with-filebeat/375140/2)
2. The content-type on the content you've uploaded to Azure blob storage is incorrect and there is no way to override it in the beat. The uploader sets the content-type when they write the blob and when we read the blob we trust the content-type to be correct. We really should have an option for overriding this so ive filed an issue in the Beats repo for this. [[filebeat][azure-blob-storage] Support custom content-type · Issue #42971 · elastic/beats · GitHub](https://github.com/elastic/beats/issues/42971)

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<div class="post-metadata">

**Author:** ![exdghost](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/exdghost/32/100274_2.png) [@exdghost](https://discuss.elastic.co/u/exdghost)\
**Post date:** [April 9, 2025, 6:43am UTC](https://discuss.elastic.co/t/azure-append-blobs/320537/4 "2025-04-09T06:43:26Z")

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@lars-s, the issue with `application/octet-stream not supported` has been solved with later updates, the issue with append blobs is separate as mentioned by @strawgate.