Elasticsearch常用的命令

• 查看es版本信息
  curl IP:9200

[root@pro-3-b ~]# curl 172.31.15.172:9200
{
  "name" : "node-1",
  "cluster_name" : "flow-es6.2",
  "cluster_uuid" : "B-q_10OsSDmUgVZIGxb54Q",
  "version" : {
    "number" : "6.2.1",
    "build_hash" : "7299dc3",
    "build_date" : "2018-02-07T19:34:26.990113Z",
    "build_snapshot" : false,
    "lucene_version" : "7.2.1",
    "minimum_wire_compatibility_version" : "5.6.0",
    "minimum_index_compatibility_version" : "5.0.0"
  },
  "tagline" : "You Know, for Search"
}

• 查看集群是否健康
  htt://IP:9200/_cat/health?v

[root@pro-3-b ~]# curl 172.31.15.172:9200/_cat/health?v
epoch      timestamp cluster    status node.total node.data shards pri relo init unassign pending_tasks max_task_wait_time active_shards_percent
1527324378 16:46:18  flow-es6.2 green           3         3     40  20    0    0        0             0                  -                100.0%

• 查看集群状态

[root@elastic-redis-01 ~]# curl -XGET "http://localhost:9200/_cluster/health?pretty"
{
  "cluster_name" : "flow-es6.2",
  "status" : "green",
  "timed_out" : false,
  "number_of_nodes" : 3,
  "number_of_data_nodes" : 3,
  "active_primary_shards" : 20,
  "active_shards" : 40,
  "relocating_shards" : 0,
  "initializing_shards" : 0,
  "unassigned_shards" : 0,
  "delayed_unassigned_shards" : 0,
  "number_of_pending_tasks" : 0,
  "number_of_in_flight_fetch" : 0,
  "task_max_waiting_in_queue_millis" : 0,
  "active_shards_percent_as_number" : 100.0
}

• 查看节点列表
  http://IP:9200/_cat/nodes?v

[root@pro-3-b ~]# curl 172.31.15.172:9200/_cat/nodes?v
ip            heap.percent ram.percent cpu load_1m load_5m load_15m node.role master name
172.31.15.173            7          45   0    0.00    0.01     0.05 mdi       *      node-2
172.31.15.172            7          48   0    0.00    0.01     0.05 mdi       -      node-1
172.31.15.174            4          45   0    0.00    0.01     0.05 mdi       -      node-3

• 列出所有索引及存储大小
  http://IP:9200/_cat/indices?v

[root@pro-3-b ~]# curl 172.31.15.172:9200/_cat/indices?v
health status index      uuid                   pri rep docs.count docs.deleted store.size pri.store.size
green  open   test       I-3VQjA7RtmO-4xT_OtoTg   5   1          0            0      2.2kb          1.1kb
green  open   custome    CF2DRI7uSqWxKGGl9tvynA   5   1          0            0      2.2kb          1.1kb
green  open   test_index 47WS4HLeSkysS5McrqmY1A   5   1          1            0     10.7kb          5.3kb
green  open   customer   VfkQgXiIQpyWM72RoRK2Zg   5   1          5            0     36.7kb         18.3kb

• 创建索引
  创建索引名为xx，默认会有5个分片，1个索引

[root@pro-3-b ~]# curl -XPUT 172.31.15.172:9200/hello_index?pretty
{
  "acknowledged" : true,
  "shards_acknowledged" : true,
  "index" : "hello_index"
}

• 添加一个类型
  curl -XPUT 'IP:9200/XX/external/2?pretty' -d '
  {
  "gwyy": "John"
  }'

[root@pro-3-b ~]# curl -XPUT  -H "Content-Type: application/json" '172.31.15.172:9200/hello_index/external/2?pretty' -d '
{
    "gwyy": "John"
}'
{
  "_index" : "hello_index",
  "_type" : "external",
  "_id" : "2",
  "_version" : 1,
  "result" : "created",
  "_shards" : {
    "total" : 2,
    "successful" : 2,
    "failed" : 0
  },
  "_seq_no" : 0,
  "_primary_term" : 1
}

• 更新一个类型
  curl -XPOST 'IP:9200/XX/external/1/_update?pretty' -d '
  {
  "doc": {"name": "Jaf"}
  }'

[root@pro-3-b ~]# curl -XPOST  -H "Content-Type: application/json" '172.31.15.172:9200/hello_index/external/5/_update?pretty' -d '
{
    "doc": {"name": "Jaf"}
}'
{
  "error" : {
    "root_cause" : [
      {
        "type" : "document_missing_exception",
        "reason" : "[external][5]: document missing",
        "index_uuid" : "4IRpFzGITlifIBhHR2N1yw",
        "shard" : "1",
        "index" : "hello_index"
      }
    ],
    "type" : "document_missing_exception",
    "reason" : "[external][5]: document missing",
    "index_uuid" : "4IRpFzGITlifIBhHR2N1yw",
    "shard" : "1",
    "index" : "hello_index"
  },
  "status" : 404
}

报错了，404,实际应该修改已经存在的ID。如下所示

[root@pro-3-b ~]# curl -XPOST  -H "Content-Type: application/json" '172.31.15.172:9200/hello_index/external/2/_update?pretty' -d '
{
    "doc": {"name": "Jaf"}
}'
{
  "_index" : "hello_index",
  "_type" : "external",
  "_id" : "2",
  "_version" : 2,
  "result" : "updated",
  "_shards" : {
    "total" : 2,
    "successful" : 2,
    "failed" : 0
  },
  "_seq_no" : 1,
  "_primary_term" : 1
}

• 删除指定索引
  curl -XDELETE 'IP:9200/_ index?pretty'

#删除hello_index索引
[root@pro-3-b ~]# curl -XDELETE  -H "Content-Type: application/json" '172.31.15.172:9200/hello_index?pretty'
{
  "acknowledged" : true
}

#查看所有的索引
[root@pro-3-b ~]# curl 172.31.15.172:9200/_cat/indices?v
health status index      uuid                   pri rep docs.count docs.deleted store.size pri.store.size
green  open   test       I-3VQjA7RtmO-4xT_OtoTg   5   1          0            0      2.2kb          1.1kb
green  open   custome    CF2DRI7uSqWxKGGl9tvynA   5   1          0            0      2.2kb          1.1kb
green  open   test_index 47WS4HLeSkysS5McrqmY1A   5   1          1            0     10.7kb          5.3kb
green  open   customer   VfkQgXiIQpyWM72RoRK2Zg   5   1          5            0     36.7kb         18.3kb
#删除test索引
[root@pro-3-b ~]# curl -XDELETE  -H "Content-Type: application/json" '172.31.15.172:9200/test?pretty'
{
  "acknowledged" : true
}
#查看所有的索引
[root@pro-3-b ~]# curl 172.31.15.172:9200/_cat/indices?v
health status index      uuid                   pri rep docs.count docs.deleted store.size pri.store.size
green  open   custome    CF2DRI7uSqWxKGGl9tvynA   5   1          0            0      2.2kb          1.1kb
green  open   customer   VfkQgXiIQpyWM72RoRK2Zg   5   1          5            0     36.7kb         18.3kb
green  open   test_index 47WS4HLeSkysS5McrqmY1A   5   1          1            0     10.7kb          5.3kb

参考：
https://blog.csdn.net/E_Eric12138/article/details/79333606
https://blog.csdn.net/zhangbin666/article/details/73332538