Mac下安裝ElasticSearch和Kibana
安裝Elasticsearch
1.下載地址
https://www.elastic.co/downloads/elasticsearch
2.下載zip包解壓得到
elasticsearch-5.6.2
3.修改配置檔案(elasticsearch-5.6.2/config/elasticsearch.yml):
配置資料目錄和日誌目錄
path.data: /es/data
path.logs: /es/logs
network.host: 127.0.0.1
http.port: 9200
http.cors.enabled: true #這個引數設定head外掛連線es叢集
http.cors.allow-origin: ”*”#同上(如果不設定最後這兩個引數head外掛連線不到es叢集)
4.啟動elasticsearch
nohup bin/elasticsearch > logs/es.log 2>&1 &
5,訪問頁面http://localhost:9200/
{
"name" : "zqUUXVm",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "qO20K0uEQoyESn--nospAA",
"version" : {
"number" : "5.6.2",
"build_hash" : "57e20f3",
"build_date" : "2017-09-23T13:16:45.703Z",
"build_snapshot" : false,
"lucene_version" : "6.6.1"
},
"tagline" : "You Know, for Search"
}
安裝kibana
1.下載kibana安裝包:
https://www.elastic.co/cn/downloads/kibana
2.解壓kibana
開啟config/kibana.yml , 配置elasticsearch.url: "http://localhost:9200”;
3.執行
bin/kibana
Elasticsearch基礎練習
ELasticsearch使用Javascript物件符號(JavaScript Object Notation),也就是JSON,作為文件序列化格式 以下使用JSON文件來表示一個使用者物件:
{
"email": "john@smith.com",
"first_name": "John",
"last_name": "Smith",
"info": {
"bio": "Eco-warrior and defender of the weak",
"age": 25,
"interests": [ "dolphins", "whales" ]
},
"join_date": "2014/05/01"
}
向Elasticsearch發出的請求的組成部分與其它普通的HTTP請求是一樣的:
curl -X<VERB> '<PROTOCOL>://<HOST>:<PORT>/<PATH>?<QUERY_STRING>' -d '<BODY>'
- VERB HTTP方法:GET, POST, PUT, HEAD, DELETE
- PROTOCOL http或者https協議(只有在Elasticsearch前面有https代理的時候可用)
- HOST Elasticsearch叢集中的任何一個節點的主機名,如果是在本地的節點,那麼就叫localhost
- PORT Elasticsearch HTTP服務所在的埠,預設為9200
- PATH API路徑(例如_count將返回叢集中文件的數量),PATH可以包含多個元件,例如_cluster/stats或者_nodes/stats/jvm
- QUERY_STRING 一些可選的查詢請求引數,例如?pretty引數將使請求返回更加美觀易讀的JSON資料
- BODY 一個JSON格式的請求主體(如果請求需要的話)
舉例:
curl 'localhost: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
1506845232 16:07:12 elasticsearch yellow 1 1 1 1 0 0 1 0
- 50.0%
curl 'localhost:9200/_cat/nodes?v'
ip heap.percent ram.percent cpu load_1m load_5m load_15m node.role master name
127.0.0.1 10 100 15 2.30 mdi * zqUUXVm
curl 'localhost:9200/_cat/indices?v'
health status index uuid pri rep docs.count docs.deleted store.size pri.store.size
yellow open .kibana Ay5LH_fLQyacGBnGaRrCIA 1 1 1 0 3.2kb 3.2kb
curl -XPUT 'localhost:9200/employee?pretty'
{
"acknowledged" : true,
"shards_acknowledged" : true,
"index" : "employee"
}
curl 'localhost:9200/_cat/indices?v'
health status index uuid pri rep docs.count docs.deleted store.size pri.store.size
yellow open .kibana Ay5LH_fLQyacGBnGaRrCIA 1 1 1 0 3.2kb 3.2kb
yellow open employee CghUPYq6RoC_oR8YAngYgg 5 1 0 0 810b
810b
curl -i -XGET 'localhost:9200/'
HTTP/1.1 200 OK
content-type: application/json; charset=UTF-8
content-length: 327
{
"name" : "zqUUXVm",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "qO20K0uEQoyESn--nospAA",
"version" : {
"number" : "5.6.2",
"build_hash" : "57e20f3",
"build_date" : "2017-09-23T13:16:45.703Z",
"build_snapshot" : false,
"lucene_version" : "6.6.1"
},
"tagline" : "You Know, for Search"
}
例如_count將返回叢集中文件的數量,QUERY_STRING 引數: ?pretty引數將使請求返回更加美觀易讀的JSON資料
curl -XGET 'http://localhost:9200/_count?pretty'; -d '
quote> {
quote> "query": {
quote> "match_all": {}
quote> }
quote> }
quote>
quote> '
{
"count" : 1,
"_shards" : {
"total" : 6,
"successful" : 6,
"skipped" : 0,
"failed" : 0
}
}
我們看不到HTTP頭是因為我們沒有讓curl顯示它們,如果要顯示,使用curl命令後跟-i引數:
curl -i -XGET 'http://localhost:9200';
HTTP/1.1 200 OK
content-type: application/json; charset=UTF-8
content-length: 327
{
"name" : "zqUUXVm",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "qO20K0uEQoyESn--nospAA",
"version" : {
"number" : "5.6.2",
"build_hash" : "57e20f3",
"build_date" : "2017-09-23T13:16:45.703Z",
"build_snapshot" : false,
"lucene_version" : "6.6.1"
},
"tagline" : "You Know, for Search"
}
為了方便,使用kibana的DevTools進行執行
GET _search
{
"query": {
"match_all": {}
}
}
GET _count
{
"query": {
"match_all": {
}
}
}
PUT /megacorp/employee/1
{
"first_name" : "John",
"last_name" : "Smith",
"age" : 25,
"about" : "I love to go rock climbing",
"interests": [ "sports", "music" ]
}
PUT /megacorp/employee/2
{
"first_name" : "Jane",
"last_name" : "Smith",
"age" : 32,
"about" : "I like to collect rock albums",
"interests": [ "music" ]
}
PUT /megacorp/employee/3
{
"first_name" : "Douglas",
"last_name" : "Fir",
"age" : 35,
"about": "I like to build cabinets",
"interests": [ "forestry" ]
}
GET /megacorp/employee/1
GET /megacorp/employee/_search
GET /megacorp/employee/_search?q=last_name:Smith
GET /megacorp/employee/_search
{
"query" : {
"match" : {
"last_name" : "Smith"
}
}
}
GET /megacorp/employee/_search
{
"query" : {
"match" : {
"about" : "rock climbing"
}
}
}
GET /megacorp/employee/_search
{
"query" : {
"match_phrase" : {
"about" : "rock climbing"
}
}
}
GET /megacorp/employee/_search
{
"query" : {
"match_phrase" : {
"about" : "rock climbing"
}
},
"highlight": {
"fields" : {
"about" : {}
}
}
}
聚合,找出有共同興趣的人
# es進行聚合操作時提示Fielddata is disabled on text fields by default
PUT megacorp/_mapping/employee/
{
"properties": {
"interests": {
"type": "text",
"fielddata": true
}
}
}
GET /megacorp/employee/_search
{
"aggs": {
"all_interests": {
"terms": { "field": "interests" }
}
}
}
GET /megacorp/employee/_search
{
"query": {
"match": {
"last_name": "smith"
}
},
"aggs": {
"all_interests": {
"terms": { "field": "interests" }
}
}
}
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