Cluster APIs

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Node specification

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Most cluster level APIs allow to specify which nodes to execute on (for example, getting the node stats for a node). Nodes can be identified in the APIs either using their internal node id, the node name, address, custom attributes, or just the _local node receiving the request. For example, here are some sample executions of nodes info:

# Local
curl localhost:9200/_cluster/nodes/_local
# Address
curl localhost:9200/_cluster/nodes/10.0.0.3,10.0.0.4
curl localhost:9200/_cluster/nodes/10.0.0.*
# Names
curl localhost:9200/_cluster/nodes/node_name_goes_here
curl localhost:9200/_cluster/nodes/node_name_goes_*
# Attributes (set something like node.rack: 2 in the config)
curl localhost:9200/_cluster/nodes/rack:2
curl localhost:9200/_cluster/nodes/ra*:2
curl localhost:9200/_cluster/nodes/ra*:2*