[discrete]
=== Cluster is close to reaching the configured maximum number of shards for data nodes.

The <<cluster-max-shards-per-node,`cluster.max_shards_per_node`>> cluster
setting limits the maximum number of open shards for a cluster, only counting data nodes
that do not belong to the frozen tier.

This symptom indicates that action should be taken, otherwise, either the creation of new
indices or upgrading the cluster could be blocked.

If you're confident your changes won't destabilize the cluster, you can
temporarily increase the limit using the <<cluster-update-settings,cluster update settings API>>:

++++
<div class="tabs" data-tab-group="host">
  <div role="tablist" aria-label="Troubleshoot shards capacity for non-frozen nodes">
    <button role="tab"
            aria-selected="true"
            aria-controls="cloud-tab-shards-capacity-non-frozen"
            id="cloud-shards-capacity-non-frozen">
      Elasticsearch Service
    </button>
    <button role="tab"
            aria-selected="false"
            aria-controls="self-managed-tab-shards-capacity-non-frozen"
            id="self-managed-shards-capacity-non-frozen"
            tabindex="-1">
      Self-managed
    </button>
  </div>
  <div tabindex="0"
       role="tabpanel"
       id="cloud-tab-shards-capacity-non-frozen"
       aria-labelledby="cloud-shards-capacity-non-frozen">
++++

include::troubleshooting-shards-capacity.asciidoc[tag=non-frozen-nodes-cloud]

++++
  </div>
  <div tabindex="0"
       role="tabpanel"
       id="self-managed-tab-shards-capacity-non-frozen"
       aria-labelledby="self-managed-shards-capacity-non-frozen"
       hidden="">
++++

include::troubleshooting-shards-capacity.asciidoc[tag=non-frozen-nodes-self-managed]

++++
  </div>
</div>
++++

[discrete]
=== Cluster is close to reaching the configured maximum number of shards for frozen nodes.

The <<cluster-max-shards-per-node-frozen,`cluster.max_shards_per_node.frozen`>> cluster
setting limits the maximum number of open shards for a cluster, only counting data nodes
that belong to the frozen tier.

This symptom indicates that action should be taken, otherwise, either the creation of new
indices or upgrading the cluster could be blocked.

If you're confident your changes won't destabilize the cluster, you can
temporarily increase the limit using the <<cluster-update-settings,cluster update settings API>>:

++++
<div class="tabs" data-tab-group="host">
  <div role="tablist" aria-label="Troubleshoot shards capacity for frozen nodes">
    <button role="tab"
            aria-selected="true"
            aria-controls="cloud-tab-shards-capacity-frozen"
            id="cloud-shards-capacity">
      Elasticsearch Service
    </button>
    <button role="tab"
            aria-selected="false"
            aria-controls="self-managed-tab-shards-capacity-frozen"
            id="self-managed-shards-capacity-frozen"
            tabindex="-1">
      Self-managed
    </button>
  </div>
  <div tabindex="0"
       role="tabpanel"
       id="cloud-tab-shards-capacity-frozen"
       aria-labelledby="cloud-shards-capacity-frozen">
++++

include::troubleshooting-shards-capacity.asciidoc[tag=frozen-nodes-cloud]

++++
  </div>
  <div tabindex="0"
       role="tabpanel"
       id="self-managed-tab-shards-capacity-frozen"
       aria-labelledby="self-managed-shards-capacity-frozen"
       hidden="">
++++

include::troubleshooting-shards-capacity.asciidoc[tag=frozen-nodes-self-managed]

++++
  </div>
</div>
++++