原文地址: https://blog.csdn.net/pilihaotian/article/details/52460747
Elasticsearch中信息很多,同时ES也有很多信息查看命令,可以帮助开发者快速查询Elasticsearch的相关信息。
_cat
$ curl localhost:9200/_cat /_cat/allocation /_cat/shards /_cat/shards/{index} /_cat/master /_cat/nodes /_cat/indices /_cat/indices/{index} /_cat/segments /_cat/segments/{index} /_cat/count /_cat/count/{index} /_cat/recovery /_cat/recovery/{index} /_cat/health /_cat/pending_tasks /_cat/aliases /_cat/aliases/{alias} /_cat/thread_pool /_cat/plugins /_cat/fielddata /_cat/fielddata/{fields} /_cat/nodeattrs /_cat/repositories /_cat/snapshots/{repository}
verbose
每个命令都支持使用?v参数,来显示详细的信息:
$ curl localhost:9200/_cat/master?v id host ip node yBet3cYzQbC68FRzLZDmFg 127.0.0.1 127.0.0.1 lihao
help
每个命令都支持使用help参数,来输出可以显示的列:
$ curl localhost:9200/_cat/master?help id | | node id host | h | host name ip | | ip address node | n | node name
headers
通过h参数,可以指定输出的字段:
$ curl localhost:9200/_cat/master?v id host ip node yBet3cYzQbC68FRzLZDmFg 127.0.0.1 127.0.0.1 lihao $ curl localhost:9200/_cat/master?h=ip,node 127.0.0.1 lihao
数字类型的格式化
很多的命令都支持返回可读性的大小数字,比如使用mb或者kb来表示。
$ curl localhost:9200/_cat/indices?v health status index pri rep docs.count docs.deleted store.size pri.store.size yellow open aaa 5 1 2 0 7.2kb 7.2kb yellow open logstash-eos-2016.09.01 5 1 297 0 202.3kb 202.3kb yellow open bank 5 1 1001 1 451.6kb 451.6kb yellow open website 5 1 2 0 7.8kb 7.8kb yellow open .kibana 1 1 5 1 26.6kb 26.6kb yellow open logstash-eos-2016.09.02 5 1 11 0 33.9kb 33.9kb yellow open test-2016.09.01 5 1 1 0 3.9kb 3.9kb yellow open testst_index 5 1 0 0 795b 795b