[[cluster-nodes-reload-secure-settings]]
== Nodes Reload Secure Settings

The cluster nodes reload secure settings API is used to re-read the
local node's encrypted keystore. Specifically, it will prompt the keystore
decryption and reading across the cluster. The keystore's plain content is
used to reinitialize all compatible plugins. A compatible plugin can be
reinitialized without restarting the node. The operation is
complete when all compatible plugins have finished reinitializing. Subsequently,
the keystore is closed and any changes to it will not be reflected on the node.

[source,js]
--------------------------------------------------
POST _nodes/reload_secure_settings
POST _nodes/nodeId1,nodeId2/reload_secure_settings
--------------------------------------------------
// CONSOLE
// TEST[setup:node]
// TEST[s/nodeId1,nodeId2/*/]

The first command reloads the keystore on each node. The seconds allows
to selectively target `nodeId1` and `nodeId2`. The node selection options are
detailed <<cluster-nodes,here>>.

Note: It is an error if secure settings are inconsistent across the cluster
nodes, yet this consistency is not enforced whatsoever. Hence, reloading specific
nodes is not standard. It is only justifiable when retrying failed reload operations.

[float]
[[rest-reload-secure-settings]]
==== REST Reload Secure Settings Response

The response contains the `nodes` object, which is a map, keyed by the
node id. Each value has the node `name` and an optional `reload_exception`
field. The `reload_exception` field is a serialization of the exception
that was thrown during the reload process, if any.

[source,console-result]
--------------------------------------------------
{
  "_nodes": {
    "total": 1,
    "successful": 1,
    "failed": 0
  },
  "cluster_name": "my_cluster",
  "nodes": {
    "pQHNt5rXTTWNvUgOrdynKg": {
      "name": "node-0"
    }
  }
}
--------------------------------------------------
// TESTRESPONSE[s/"my_cluster"/$body.cluster_name/]
// TESTRESPONSE[s/"pQHNt5rXTTWNvUgOrdynKg"/\$node_name/]