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[DOCS] Show EC2's auto attribute #21474

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pickypg merged 3 commits into from
Nov 21, 2016
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[DOCS] Show EC2's auto attribute #21474

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[DOCS] Show EC2's auto attribute
pickypg Nov 10, 2016
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fix link that goes out of plugin section
pickypg Nov 21, 2016
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pickypg Nov 21, 2016
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17 changes: 14 additions & 3 deletions docs/plugins/discovery-ec2.asciidoc
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Expand Up @@ -250,9 +250,20 @@ name - highly undesirable). Tagging elasticsearch ec2 nodes and then filtering b
[[discovery-ec2-attributes]]
===== Automatic Node Attributes

Though not dependent on actually using `ec2` as discovery (but still requires the cloud aws plugin installed), the
plugin can automatically add node attributes relating to ec2 (for example, availability zone, that can be used with
the awareness allocation feature). In order to enable it, set `cloud.node.auto_attributes` to `true` in the settings.
Though not dependent on actually using `ec2` as discovery (but still requires the `discovery-ec2` plugin installed), the
plugin can automatically add node attributes relating to ec2. In the future this may support other attributes, but this will
currently only add an `aws_availability_zone` node attribute, which is the availability zone of the current node. Attributes
can be used to isolate primary and replica shards across availability zones by using the
{ref}/allocation-awareness.html[Allocation Awareness] feature.

In order to enable it, set `cloud.node.auto_attributes` to `true` in the settings. For example:

[source,yaml]
----
cloud.node.auto_attributes: true

cluster.routing.allocation.awareness.attributes: aws_availability_zone
----

[[discovery-ec2-endpoint]]
===== Using other EC2 endpoint
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