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GET _cat/health?v

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epoch      timestamp cluster        status node.total node.data shards pri relo init unassign pending_tasks max_task_wait_time active_shards_percent
1536485402 17:30:02  my-application yellow          1         1      6   6    0    0        5             0                  -                 54.5%

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GET _cat/indices?v

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health status index     uuid                   pri rep docs.count docs.deleted store.size pri.store.size
green  open   .kibana   UHQ4CLYzQECf_nxCqmsNMw   1   0          1            0        4kb            4kb
yellow open   testindex cLKhtHKbScWNqjZPRmUAqw   5   1          3            0     11.5kb         11.5kb

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新增index
PUT /test_index?pretty
删除index
DELETE /test_index?pretty