ElasticSearch必知必会-进阶篇

# 步骤1 在集群 1 中添加数据如下
PUT test01/_bulk
{"index":{"_id":1}}
{"title":"this is from cluster01..."}

# 步骤2 在集群 2 中添加数据如下：
PUT test01/_bulk
{"index":{"_id":1}}
{"title":"this is from cluster02..."}

# 步骤 3：执行跨集群检索如下: 语法：POST 集群名称1:索引名称,集群名称2:索引名称/_search
POST cluster_one:test01,cluster_two:test01/_search
{
  "took" : 7,
  "timed_out" : false,
  "num_reduce_phases" : 3,
  "_shards" : {
    "total" : 2,
    "successful" : 2,
    "skipped" : 0,
    "failed" : 0
  },
  "_clusters" : {
    "total" : 2,
    "successful" : 2,
    "skipped" : 0
  },
  "hits" : {
    "total" : {
      "value" : 2,
      "relation" : "eq"
    },
    "max_score" : 1.0,
    "hits" : [
      {
        "_index" : "cluster_two:test01",
        "_id" : "1",
        "_score" : 1.0,
        "_source" : {
          "title" : "this is from cluster02..."
        }
      },
      {
        "_index" : "cluster_one:test01",
        "_id" : "1",
        "_score" : 1.0,
        "_source" : {
          "title" : "this is from cluster01..."
        }
      }
    ]
  }
}

# 组件模板 - 索引setting相关
PUT _component_template/template_sttting_part
{
  "template": {
    "settings": {
      "number_of_shards": 3,
      "number_of_replicas": 0
    }
  }
}

# 组件模板 - 索引mapping相关
PUT _component_template/template_mapping_part
{
  "template": {
    "mappings": {
      "properties": {
        "hosr_name":{
          "type": "keyword"
        },
        "cratet_at":{
          "type": "date",
          "format": "EEE MMM dd HH:mm:ss Z yyyy"
        }
      }
    }
  }
}

// **注意：composed_of 如果多个组件模板中的配置项有重复，后面的会覆盖前面的，和配置的顺序有关**
# 基于组件模板，配置模板和索引之间的关联
# 也就是所有 tem_* 该表达式相关的索引创建时，都会使用到以下规则
PUT _index_template/template_1
{
  "index_patterns": [
    "tem_*"
  ],
  "composed_of": [
    "template_sttting_part",
    "template_mapping_part"
  ]
}

# 创建测试
PUT tem_001

# 结合mapping 动态模板 和 索引模板
# 1.创建组件模板之 - mapping模板
PUT _component_template/template_mapping_part_01
{
  "template": {
    "mappings": {
      "dynamic_templates": [
        {
          "integers": {
            "match_mapping_type": "long",
            "mapping": {
              "type": "integer"
            }
          }
        }
      ]
    }
  }
}

# 2. 创建组件模板与索引关联配置
PUT _index_template/template_2
{
  "index_patterns": ["tem1_*"],
  "composed_of": ["template_mapping_part_01"]
}

# 3.创建测试数据
POST tem1_001/_doc/1
{
  "age":18
}

# 4.查看mapping结构验证
get tem1_001/_mapping

# 结合mapping 动态模板 和 索引模板
# 1.创建组件模板之 - mapping模板
PUT _component_template/template_mapping_part_01
{
  "template": {
    "mappings": {
      "dynamic_templates": [
        {
          "integers": {
            "match_mapping_type": "long",
            "mapping": {
              "type": "integer"
            }
          }
        },
        {
        "date_type_process": {
          "match": "date_*",
          "mapping": {
            "type": "date",
            "format":"yyyy-MM-dd HH:mm:ss"
          }
        }
      }
      ]
    }
  }
}

# 2. 创建组件模板与索引关联配置
PUT _index_template/template_2
{
  "index_patterns": ["tem1_*"],
  "composed_of": ["template_mapping_part_01"]
}


# 3.创建测试数据
POST tem1_001/_doc/2
{
  "age":19,
  "date_aoe":"2022-01-01 18:18:00"
}

# 4.查看mapping结构验证
get tem1_001/_mapping

# 0.自测前提，lim生命周期rollover频率。默认10分钟
PUT _cluster/settings
{
  "persistent": {
    "indices.lifecycle.poll_interval": "1s"
  }
}

# 1. 创建索引，并指定别名
PUT test_index-0001
{
  "aliases": {
    "my-test-index-alias": {
      "is_write_index": true
    }
  }
}

# 2.批量导入数据
PUT my-test-index-alias/_bulk
{"index":{"_id":1}}
{"title":"testing 01"}
{"index":{"_id":2}}
{"title":"testing 02"}
{"index":{"_id":3}}
{"title":"testing 03"}
{"index":{"_id":4}}
{"title":"testing 04"}
{"index":{"_id":5}}
{"title":"testing 05"}

# 3.rollover 滚动规则配置
POST my-test-index-alias/_rollover
{
  "conditions": {
    "max_age": "7d",
    "max_docs": 5,
    "max_primary_shard_size": "50gb"
  }
}

# 4.在满足条件的前提下创建滚动索引
PUT my-test-index-alias/_bulk
{"index":{"_id":7}}
{"title":"testing 07"}

# 5.查询验证滚动是否成功
POST my-test-index-alias/_search

# 1.准备测试数据
DELETE kibana_sample_data_logs_ext
PUT kibana_sample_data_logs_ext
{
  "settings": {
    "number_of_shards": 5,
    "number_of_replicas": 0
  }
}
POST _reindex
{
  "source": {
    "index": "kibana_sample_data_logs"
  },
  "dest": {
    "index": "kibana_sample_data_logs_ext"
  }
}


# 2.压缩前必要的条件设置
# number_of_replicas :压缩后副本为0
# index.routing.allocation.include._tier_preference 数据分片全部路由到hot节点
# "index.blocks.write 压缩后索引不再允许数据写入
PUT kibana_sample_data_logs_ext/_settings
{
  "settings": {
    "index.number_of_replicas": 0,
    "index.routing.allocation.include._tier_preference": "data_hot",
    "index.blocks.write": true
  }
}

# 3.实施压缩
POST kibana_sample_data_logs_ext/_shrink/kibana_sample_data_logs_ext_shrink
{
  "settings":{
    "index.number_of_replicas": 0,
    "index.number_of_shards": 1,
    "index.codec":"best_compression"
  },
  "aliases":{
    "kibana_sample_data_logs_alias":{}
  }
}

PUT _ilm/policy/kr_20221114_policy
{
  "policy": {
    "phases": {
      "hot": {
        "min_age": "0ms",
        "actions": {
          "set_priority": {
            "priority": 100
          },
          "rollover": {
            "max_size": "50gb",
            "max_primary_shard_size": "50gb",
            "max_age": "3d",
            "max_docs": 5
          }
        }
      },
      "warm": {
        "min_age": "15s",
        "actions": {
          "forcemerge": {
            "max_num_segments": 1
          },
          "set_priority": {
            "priority": 50
          },
          "allocate": {
            "number_of_replicas": 0
          }
        }
      },
      "cold": {
        "min_age": "30s",
        "actions": {
          "set_priority": {
            "priority": 0
          }
        }
      },
      "delete": {
        "min_age": "45s",
        "actions": {
          "delete": {
            "delete_searchable_snapshot": true
          }
        }
      }
    }
  }
}

PUT _index_template/kr_20221114_template
{
  "index_patterns": ["kr_index-**"],
  "template": {
    "settings": {
      "index": {
        "lifecycle": {
          "name": "kr_20221114_policy",
          "rollover_alias": "kr-index-alias"
        },
        "routing": {
          "allocation": {
            "include": {
              "_tier_preference": "data-hot"
            }
          }
        },
        "number_of_shards": "3",
        "number_of_replicas": "1"
      }
    },
    "aliases": {},
    "mappings": {}
  }
}

PUT _cluster/settings
{
  "persistent": {
    "indices.lifecycle.poll_interval": "1s"
  }
}

# 创建索引，并制定可写别名
PUT kr_index-0001
{
  "aliases": {
    "kr-index-alias": {
      "is_write_index": true
    }
  }
}
# 通过别名新增数据
PUT kr-index-alias/_bulk
{"index":{"_id":1}}
{"title":"testing 01"}
{"index":{"_id":2}}
{"title":"testing 02"}
{"index":{"_id":3}}
{"title":"testing 03"}
{"index":{"_id":4}}
{"title":"testing 04"}
{"index":{"_id":5}}
{"title":"testing 05"}
# 通过别名新增数据，触发rollover
PUT kr-index-alias/_bulk
{"index":{"_id":6}}
{"title":"testing 06"}
# 查看索引情况
GET kr_index-0001

get _cat/indices?v

# 步骤1 。创建 lim policy
PUT _ilm/policy/my-lifecycle-policy
{
  "policy": {
    "phases": {
      "hot": {
        "actions": {
          "rollover": {
            "max_size": "50gb",
            "max_age": "3m",
            "max_docs": 5
          },
          "set_priority": {
            "priority": 100
          }
        }
      },
      "warm": {
        "min_age": "5m",
        "actions": {
          "allocate": {
            "number_of_replicas": 0
          }, 
          "forcemerge": {
            "max_num_segments": 1
          },
          "set_priority": {
            "priority": 50
          }
        }
      },
      "cold": {
        "min_age": "6m",
        "actions": {
          "freeze":{}
        }
      },
      "delete": {
        "min_age": "45s",
        "actions": {
          "delete": {}
        }
      }
    }
  }
}

# 步骤2 创建组件模板 - mapping
PUT _component_template/my-mappings
{
  "template": {
    "mappings": {
      "properties": {
        "@timestamp": {
          "type": "date",
          "format": "date_optional_time||epoch_millis"
        },
        "message": {
          "type": "wildcard"
        }
      }
    }
  },
  "_meta": {
    "description": "Mappings for @timestamp and message fields",
    "my-custom-meta-field": "More arbitrary metadata"
  }
}

# 步骤3 创建组件模板 - setting
PUT _component_template/my-settings
{
  "template": {
    "settings": {
      "index.lifecycle.name": "my-lifecycle-policy",
      "index.routing.allocation.include._tier_preference":"data_hot"
    }
  },
  "_meta": {
    "description": "Settings for ILM",
    "my-custom-meta-field": "More arbitrary metadata"
  }
}

# 步骤4 创建索引模板
PUT _index_template/my-index-template
{
  "index_patterns": ["my-data-stream*"],
  "data_stream": { },
  "composed_of": [ "my-mappings", "my-settings" ],
  "priority": 500,
  "_meta": {
    "description": "Template for my time series data",
    "my-custom-meta-field": "More arbitrary metadata"
  }
}

# 步骤5 创建 data stream  并 写入数据测试
PUT my-data-stream/_bulk
{ "create":{ } }
{ "@timestamp": "2099-05-06T16:21:15.000Z", "message": "192.0.2.42 - - [06/May/2099:16:21:15 +0000] \"GET /images/bg.jpg HTTP/1.0\" 200 24736" }
{ "create":{ } }
{ "@timestamp": "2099-05-06T16:25:42.000Z", "message": "192.0.2.255 - - [06/May/2099:16:25:42 +0000] \"GET /favicon.ico HTTP/1.0\" 200 3638" }

POST my-data-stream/_doc
{
  "@timestamp": "2099-05-06T16:21:15.000Z",
  "message": "192.0.2.42 - - [06/May/2099:16:21:15 +0000] \"GET /images/bg.jpg HTTP/1.0\" 200 24736"
}


# 步骤6 查看data stream 后台索引信息
GET /_resolve/index/my-data-stream*