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https://issues.apache.org/jira/browse/CASSANDRA-666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12853472#action_12853472
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Seth Fitzsimmons commented on CASSANDRA-666:
--------------------------------------------
Instance metadata is available from
http://169.254.169.254/latest/meta-data/placement/availability-zone/ when on an
EC2 instance.
> Making Cassandra EC2 Aware
> --------------------------
>
> Key: CASSANDRA-666
> URL: https://issues.apache.org/jira/browse/CASSANDRA-666
> Project: Cassandra
> Issue Type: New Feature
> Components: Core
> Affects Versions: 0.6
> Environment: replication strategy, endpoints
> Reporter: Derek Smith
> Assignee: Derek Smith
> Priority: Trivial
> Attachments: contrib-ec2-aware-1.1.tar.gz
>
> Original Estimate: 2h
> Remaining Estimate: 2h
>
> There are no current replication strategies to deal with different data
> centers in an EC2 cluster. The IP address comparisons used in the current
> implementations aren't enough to guarantee that an endpoint is in the same
> datacenter. By supplying the access and secret key to a client's AWS
> account, Cassandra should use the amazon-ec2 java library to access
> information about each endpoint.
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