# Using localstack aws s3 in nextflow

**URL:** <https://community.seqera.io/t/using-localstack-aws-s3-in-nextflow/1376>\
**Category:** Ask for help\
**Created:** [November 6, 2024, 4:28pm UTC](https://community.seqera.io/t/using-localstack-aws-s3-in-nextflow/1376 "2024-11-06T16:28:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Stefan\_Babukov](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/stefan_babukov/32/1199_2.png) [@Stefan\_Babukov](https://community.seqera.io/u/Stefan_Babukov)\
**Post date:** [November 6, 2024, 4:28pm UTC](https://community.seqera.io/t/using-localstack-aws-s3-in-nextflow/1376/1 "2024-11-06T16:28:51Z")

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Hello, similarly to the issue reported on [I am trying to use S3 of LocalStack with Nextflow but I got runtime error. · nextflow-io/nextflow · Discussion #5181 · GitHub](https://github.com/nextflow-io/nextflow/discussions/5181)

I’m experiencing issues, accessing aws s3 ran locally on localstack through nextflow.  
It should be reachable through the [http://localhost:4566](http://localhost:4566) endpoint .

Is this a known issue, is there a way to go around it?  
Thank you.

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**Author:** ![mribeirodantas](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/mribeirodantas/32/235_2.png) [@mribeirodantas](https://community.seqera.io/u/mribeirodantas)\
**Post date:** [November 14, 2024, 11:56pm UTC](https://community.seqera.io/t/using-localstack-aws-s3-in-nextflow/1376/2 "2024-11-14T23:56:14Z")

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Hi @Stefan_Babukov. Welcome to the forum!

Can you confirm it works outside Nextflow? I have seen several complaints on the internet of people running into these erros **without Nextflow**.

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<div class="post-metadata">

**Author:** ![Stefan\_Babukov](https://dub1.discourse-cdn.com/flex013/user_avatar/community.seqera.io/stefan_babukov/32/1199_2.png) [@Stefan\_Babukov](https://community.seqera.io/u/Stefan_Babukov)\
**Post date:** [November 22, 2024, 10:05am UTC](https://community.seqera.io/t/using-localstack-aws-s3-in-nextflow/1376/3 "2024-11-22T10:05:48Z")

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Hi, thanks for your reply.  
I can confirm localstack endpoint works outside of nextflow, we have been using it for years.