ELK命令集合

获取所有_cat系列的操作

curl http://localhost:9200/_cat
=^.^=
/_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

可以后面加一个v，让输出内容表格显示表头; pretty则让输出缩进更规范

集群状态

curl -X GET "localhost:9200/_cluster/health?pretty"

节点状态

curl -X GET "localhost:9200/_cat/nodes?pretty&v"

分片状态

curl -X GET "localhost:9200/_cat/shards?v&pretty"
#分片中如果存在未分配的分片， 可以查看未分片的原因：_cat/shards?h=index,shard,prirep,state,unassigned.reason&v

索引管理

curl -X GET "localhost:9200/_cat/indices?v"
#条件过滤：_cat/indices?v&health=yellow
#排序：_cat/indices?v&health=yellow&s=docs.count:desc

索引详细信息

curl -X GET "localhost:9200/chat_index_alias/_stats?pretty"
curl -X GET "localhost:9200/_cat/count/chat_index_alias?v&pretty"

新建索引

curl -X PUT "localhost:9200/my_index_name" -d '
{
    "settings" : {
        "index" : {
            "number_of_shards" : 3, 
            "number_of_replicas" : 2 
        }
    }
}'

删除索引

curl -X DELETE "localhost:9200/index_name"

索引查询

#分词搜索
curl -X POST "localhost:9200/chat_index_alias/_search" -d '
{
  "query": {
    "match": {
      "question": "吃饭了吗"
    }
  }
}'

#完全匹配搜索
curl -X POST "localhost:9200/chat_index_alias/_search" -d '
{
  "query": {
    "match_phrase": {
      "question": "你吃饭了"
    }
  }
}'

别名

#查看别名
curl -X GET "localhost:9200/_alias/chat_index_alias?pretty"
#增加别名
curl -X PUT "localhost:9200/my_index/_alias/my_index_alias?pretty"
#删除别名(一般纯删除别名使用的比较少，一般是别名重新绑定（删除和绑定为一个原子操作)
curl -X POST 'http://localhost:9200/_aliases' -d '
{
    "actions": [
        {"remove": {"index": "my_index", "alias": "my_index_alias"}}
    ]
}'
#别名重新绑定
curl -XPOST 'http://localhost:9200/_aliases' -d '
{
    "actions" : [
        { "remove" : { "index" : "my_index", "alias" : "my_index_alias" } },
        { "add" : { "index" : "my_index_v2", "alias" : "my_index_alias" } }
    ]
}'