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<!DOCTYPE html>
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<title>Cluster Stats | Elasticsearch: The Definitive Guide [2.x] | Elastic</title>
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<p>
<strong>WARNING</strong>: The 2.x versions of Elasticsearch have passed their
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<h2 class="title"><a id="_cluster_stats"></a>Cluster Stats<a class="edit_me edit_me_private" rel="nofollow" title="Editing on GitHub is available to Elastic" href="https://github.com/elastic/elasticsearch-definitive-guide/edit/2.x/500_Cluster_Admin/40_other_stats.asciidoc">edit</a></h2>
</div></div></div>
<p>The <code class="literal">cluster-stats</code> API provides similar output to the <code class="literal">node-stats</code>. There
is one crucial difference: Node Stats shows you statistics per node, while
<code class="literal">cluster-stats</code> shows you the sum total of all nodes in a single metric.</p>
<p>This provides some useful stats to glance at. You can see for example, that your entire cluster
is using 50% of the available heap or that filter cache is not evicting heavily. Its
main use is to provide a quick summary that is more extensive than
the <code class="literal">cluster-health</code>, but less detailed than <code class="literal">node-stats</code>. It is also useful for
clusters that are very large, which makes <code class="literal">node-stats</code> output difficult
to read.</p>
<p>The API may be invoked as follows:</p>
<div class="pre_wrapper lang-js">
<pre class="programlisting prettyprint lang-js">GET _cluster/stats</pre>
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