Nodes usage
The cluster nodes usage API allows to retrieve information on the usage of features for each node.
GET _nodes/usage GET _nodes/nodeId1,nodeId2/usage
The first command retrieves usage of all the nodes in the cluster. The
second command selectively retrieves nodes usage of only nodeId1 and
nodeId2. All the nodes selective options are explained
here.
REST actions usage information
The rest_actions field in the response contains a map of the REST
actions classname with a count of the number of times that action has
been called on the node:
{
"_nodes": {
"total": 1,
"successful": 1,
"failed": 0
},
"cluster_name": "my_cluster",
"nodes": {
"pQHNt5rXTTWNvUgOrdynKg": {
"timestamp": 1492553961812, 
"since": 1492553906606, 
"rest_actions": {
"org.elasticsearch.rest.action.admin.cluster.RestNodesUsageAction": 1,
"org.elasticsearch.rest.action.admin.indices.RestCreateIndexAction": 1,
"org.elasticsearch.rest.action.document.RestGetAction": 1,
"org.elasticsearch.rest.action.search.RestSearchAction": 19, 
"org.elasticsearch.rest.action.admin.cluster.RestNodesInfoAction": 36
}
}
}
}
| Timestamp for when this nodes usage request was performed. |
| Timestamp for when the usage information recording was started. This is equivalent to the time that the node was started. |
| Search action has been called 19 times for this node. |