curl简单介绍

简单的认为是可以在命令行下面访问url的一个工具，使用curl可以简单实现常见的get/post请求。

curl 命令：

-X 指定http的请求方法 有HEAD GET POST PUT DELETE -d 指定要传输的数据 -H 指定http请求头信息 -i 获取响应头

cat系列

用于获取Elasticsearch集群状态接口

curl -XGET 'http://localhost:9200/_cat'

接口展示：

=^.^=/_cat/allocation/_cat/shards/_cat/shards/{index}/_cat/master/_cat/nodes/_cat/tasks/_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/thread_pool/{thread_pools}/_cat/plugins/_cat/fielddata/_cat/fielddata/{fields}/_cat/nodeattrs/_cat/repositories/_cat/snapshots/{repository}/_cat/templates

cluster系列

1.集群系统信息，包括CPU JVM等

curl -XGET 'https://localhost:9200/_cluster/stats?pretty=true'

2.集群的详细信息,节点、分片等

curl -XGET 'http://localhost:9200/_cluster/state?pretty=true'

3.集群堆积的任务

curl -XGET 'http://localhost:9200/_cluster/pending_tasks?pretty=true'

集群关闭操作

1.关闭集群节点

curl -XPOST 'http://localhost:9200/_cluster/nodes/127.0.0.1/_shutdown'

2.关闭主节点

curl -XPOST 'http://localhost:9200/_cluster/nodes/_master/_shutdown'

3.关闭整个集群

curl -XPOST 'http://localhost:9200/_cluster/nodes/_all/_shutdown'

Index的建立和删除

查看全部索引

curl -XGET 'http://localhost:9200/_cat/indices?v'

新建Index

1.命令创建：

curl -XPUT 'http://localhost:9200/city'结果：{  "acknowledged": true,  "shards_acknowledged": true,  "index": "city"}

2.elasticsearch-head创建：

3.删除索引

curl -XDELETE 'http://localhost:9200/account'

数据的简单操作

添加数据

curl -H 'Content-Type: application/json' -XPOST 'http://localhost:9200/city/south/1' -d '{"cityName":"guangzhou"}'

结果

{    "_index":"city",    "_type":"south",    "_id":"1",    "_version":1,    "result":"created",    "_shards":{        "total":2,        "successful":2,        "failed":0    },    "_seq_no":0,    "_primary_term":1}

查询数据

curl -i -XGET 'http://localhost:9200/city/south/1'

结果

{    "_index":"city",    "_type":"south",    "_id":"1",    "_version":1,    "found":true,    "_source":{        "cityName":"guangzhou"    }}

删除数据

curl -XDELETE 'http://localhost:9200/city/south/1'

结果

{    "_index":"city",    "_type":"south",    "_id":"1",    "_version":2,    "result":"deleted",    "_shards":{        "total":2,        "successful":2,        "failed":0    },    "_seq_no":1,    "_primary_term":1}

更新数据

curl -i -H 'Content-Type: application/json'  -XPUT 'http://localhost:9200/city/south/1' -d '{"cityName":"HUNAN"}'

结果

HTTP/1.1 200 OKcontent-type: application/json; charset=UTF-8content-length: 153   {    "_index":"city",    "_type":"south",    "_id":"1",    "_version":2,    "result":"updated",    "_shards":{        "total":2,        "successful":2,        "failed":0    },    "_seq_no":3,    "_primary_term":2}