"Name" field in EC2 Service Discovery?

[Dave Cadwallader]

I'm looking at the blog post for EC2 SD feature - great write-up!

One point of confusion is around the recommendations for labeling hosts discovered thru this method.  The screenshot shows the EC2 "Name" field like so: 

I would think that this "Name" field would be the best candidate for labeling the target in Prometheus, since it could tell you exactly what the host is.  The instance ID and public DNS names however are auto-generated strings of alphanumeric gobbly-gook that would not be very useful in an alert situation to tell me where the problem is.

For instance, my "Name" fields are things like:  mongo-server1.staging.company.com, but my ec2 public instance names are like ec2-123.456.789.aws.com.

I didn't see the "Name" field listed in the list of meta labels.  Is it possible to grab it for relabeling purposes?  Or am I thinking about this wrong?

Thanks!
Dave

[Tom Wilkie]

Name is an ec2 tag, so it will be in the __meta_ec2_tag_Name label.

Thanks

Tom

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[Dave Cadwallader]

Aha! Thank you Tom!  I assumed "Tag" was its own separate field.  Makes sense now!