megacorp

1. What is ElasticsearchElasticsearch is an open source real-time distributed search and analysis engine based on Apche Lucene.2. InstallationThe only requirement to install Elasticsearch is to install the official version of Java, address: www.java.comDownload the latest version of Elasticsearch in Elasticsearch.org/download.3. Running./bin/elastichsearch-d (-d parameter run for daemon mode)Curl ' Http://localhost:9200/?pretty ' can see the status200 information, stating that Elasticsearch is u

Use Environment elasticsearch5.1.1 kibana5.1.1 Synonyms plugin 5.1.1 Installing plugins download the corresponding elasticsearch-analysis-dynamic-synonym-5.1.1.zip, unzip to the local elasticsearch/plugins directory, restart ES first way local file Description: for local files: mainly through the file modification timestamp (Modify time) to determine whether to reload in the Elasticsearch/config directory, set up the analysis directory, and put Synonym.txt in the profile, add the follow

Simple searchGETThe request is very simple-you can easily get the document you want. Let's try something further, like a simple search!We try one of the simplest search requests for all employees:GET /megacorp/employee/_searchNext, let's search for employees whose last name contains "Jake" . To do this, we'll use a lightweight search method on the command line. This method is often referred to as a query string Search because we pass a query statement

1. Find the most common hobbies for all employees:Get/megacorp/employee/_search {"Aggs": {"all_interests": {"Terms": {"field": "Interes ts "}}}}We can see two employees who are interested in music, one like Lin, the other is sports.2. Find the largest interests of employees whose surname is Smith:get/megacorp/employee/_search{ "Query":{ "Match":{ "last_name": "Smith" }}, "Aggs":{ "All_interests":{ #all_

Only need JDK, download unzip can, best modified under ELASTICSEARCH.YMLCluster.namenode.nameES has a very rich plugin, it is recommended to install the following severalBigdeskresource monitoring and cluster management plug-in bin/plugin-install lukas-vlcek/bigdeskhttp://127.0.0.1:9200/_plugin/ BigdeskElasticsearch-headdata Query Plugin bin/plugin-install mobz/elasticsearch-headhttp://localhost:9200/_plugin/ head/Elasticsearch-inquisitorplugin for debugging query statements bin/plugin-install p

CTRL + C can close node, if not, then useHttp://localhost:9200/_shutdown, shut it down.Relationship with the relational database if compared to the RDB, then relational Db⇒databases⇒tables⇒rows⇒columnselasticsearch⇒indices⇒types⇒documents⇒fi ELDs Data Read/write insert/Update dataYou see? EMPLOYEE/1 to take 1, usually with keyFetching dataGet/megacorp/employee/1*put insert data, get get data, delete deletes data, head queries for data, update data? J

(instead of facet) aggregation, etc. , the official website (https://www.elastic.co/guide/index.html) has a rich sample of queries. Similarly, it supports bulk API bulk queries, reducing network round trips. Full-Text SearchA feature that is difficult to implement in a traditional database. We will search all employees who like rock climbing:get/megacorp/employee/_search{"Query": {"match": {"about": "Rock Climbing"}}You will find that we also used th

= "10.99.35.209:9092"topics = ["Maxwell"]Codec = json {charset = ["Iso-8859-1"]}Consumer_threads = 5Decorate_events = True}}Filter {Mutate {Remove_field = ["Database", "table", "TS", "XID", "commit", "old", "Kafka"]Rename = ["[Data][id]", "id"]Rename = ["[Data][first_name]", "first_name"]Rename = ["[Data][last_name]", "last_name"]Rename = ["[Data][age]", "age"]Rename = ["[Data][about]", "about"]Rename = ["[Data][interests]", "interests"]}Translate {field = "Type"Destination = "Op_type"Dictionar

contains a lot of fields (columns).Elasticsearch's interactions can be either using Java APIs or using HTTP's RESTful API, for example, we're going to insert a record that can simply send an HTTP request:PUT /megacorp/employee/1{ "name" : "John", "sex" : "Male", "age" : 25, "about" : "I love to go rock climbing", "interests": [ "sports", "music" ]}Update, the query is similar to the operation, the specific operating ma

installation and use user name: elastic password: @Dc? $qz 3w6ezf%juwkd+ Login Note: The role of elastic is Superuser superuser, Superuser can use API actions in Dev Tools Es,kibana the role of the user is Kibana_system, through management can manage users, such as creating users, Modify the password (for convenience, the password is changed to 123456), assign permissions, etc.Dev Tools: Curl can be simplified operation es, only to specify the HTTP verb, API path and parameters. For example Pu

Elasticsea Rch. A mapping is also used to configure metadata associated with the type. Mapping defines the data types of many fields in the type and how those fields are elasticsearch processed, such as whether a field can be queried and how to participle. Custom Mapping The following is a simple mapping definition: curl-xput ' Http://localhost:9200/megacorp '-d ' {"Settings": {"Number_of_shards": 3, "Number_of_replicas": 1}, "mapping