# S3 discovery for non EC2 instances

**URL:** <https://discuss.elastic.co/t/s3-discovery-for-non-ec2-instances/9728>\
**Category:** Elasticsearch\
**Created:** [November 15, 2012, 3:03pm UTC](https://discuss.elastic.co/t/s3-discovery-for-non-ec2-instances/9728 "2012-11-15T15:03:46Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Presence](https://avatars.discourse-cdn.com/v4/letter/p/7feea3/32.png) [@Presence](https://discuss.elastic.co/u/Presence)\
**Post date:** [November 15, 2012, 3:03pm UTC](https://discuss.elastic.co/t/s3-discovery-for-non-ec2-instances/9728/1 "2012-11-15T15:03:46Z")

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Hi,

I have ES instances across multiple subnets outside of EC2, between which  
multicast doesn't operate. Can I still use the built in EC2 (S3) discovery  
to allow each node in the cluster to find others?

Thanks in advance for any insight.

Presence

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<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:** [July 6, 2017, 3:04am UTC](https://discuss.elastic.co/t/s3-discovery-for-non-ec2-instances/9728/2 "2017-07-06T03:04:07Z")

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