Elasticsearch杂记（1）
2024-05-19 10:44:37
一、安装使用Elasticsearch
准备3个centos7节点
1、安装
1.0 各节点时间需要同步
# /usr/sbin/ntpdate s2c.time.edu.cn1.1 由于Elasticsearch是java开发，需要先安装JDK环境
这边使用系统默认的openjdk1.7，但是还需要安装1.7的其他包组：
[root@master1 ~]# yum install java-1.7.0-openjdk-devel设置java环境变量：
[root@master1 ~]# vim /etc/profile.d/java.shexport JAVA_HOME=/usr1.2 下载安装rpm包
官方站点：https://www.elastic.co/downloads/past-releases
[root@master1 ~]# wget https://https://download.elastic.co/elasticsearch/elasticsearch/elasticsearch-1.7.2.noarch.rpm安装
[root@master1 ~]# yum install elasticsearch-1.7.2.noarch.rpm1.3 修改配置文件
[root@master1 ~]# cd /etc/elasticsearch/
[root@master1 elasticsearch]# vim elasticsearch.yml cluster.name: myes #集群中的名字node.name: "master1.com" #本地节点的名字index.number_of_shards: 5 #切片数量index.number_of_replicas: 1 #副本数量transport.tcp.port: 9300 #集群默认端口93001.4 启动
[root@master1 ~]# systemctl daemon-reload[root@master1 ~]# systemctl start elasticsearch.service工作端口9200/tcp，集群检测端口9300/tcp已经监听
1.5 定义启动第二个节点
[root@master2 ~]# yum install java-1.7.0-openjdk-devel设置java环境变量：
[root@master1 ~]# scp /etc/profile.d/java.sh master2:/etc/profile.d/安装：
[root@master1 ~]# scp elasticsearch-1.7.2.noarch.rpm master2:/root/[root@master2 ~]# yum install elasticsearch-1.7.2.noarch.rpm复制master1节点的配置修改：
[root@master1 ~]# scp /etc/elasticsearch/elasticsearch.yml master2:/etc/elasticsearch/修改配置文件：
[root@master2 ~]# vim /etc/elasticsearch/elasticsearch.yml cluster.name: myesnode.name: "master2.com"启动：
[root@master2 ~]# systemctl start elasticsearch.service查看状态：
1.6 定义第三个节点
master3配置同master2，注意集群节点名字要一样，node节点改成master3.com即可1.7 抓包观察集×××互信息
[root@master2 ~]# yum install -y tcpdump
2、 查看集群信息（只能通过curl命令与其API进行交互）
2.1 查看节点状态是否正常
[root@master1 ~]# curl -X GET 'http://10.201.106.131:9200/?preey'
{"status" : 200,"name" : "master1.com","cluster_name" : "myes","version" : {"number" : "1.7.2","build_hash" : "e43676b1385b8125d647f593f7202acbd816e8ec","build_timestamp" : "2015-09-14T09:49:53Z","build_snapshot" : false,"lucene_version" : "4.10.4"},"tagline" : "You Know, for Search" #相当于hello world
}2.2 cat的API显示模式
[root@master1 ~]# curl -X GET 'http://10.201.106.131:9200/_cat/'
2.2.1 显示集群节点：
[root@master1 ~]# curl -X GET 'http://10.201.106.131:9200/_cat/nodes'
master2.com 10.201.106.132 7 59 0.01 d m master2.com
master1.com 10.201.106.131 5 61 0.00 d * master1.com
master3.com 10.201.106.133 5 71 0.08 d m master3.com 2.2.2 显示详细格式
[root@master1 ~]# curl -X GET 'http://10.201.106.131:9200/_cat/nodes?v'
heap.percent：堆内存 ？？？
ram.percent：内存使用量
load：负载
node.role：节点角色
master：*符号为主节点2.2.3 查看选项帮助
[root@master1 ~]# curl -X GET 'http://10.201.106.131:9200/_cat/nodes?help'只显示需要的列：
[root@master1 ~]# curl -X GET 'http://10.201.106.131:9200/_cat/nodes?h=name,ip,port,uptime,heap,current,load'
master2.com 10.201.106.132 9300 8.1h 0.03
master1.com 10.201.106.131 9300 452.3d 0.00
master3.com 10.201.106.133 9300 8h 0.02 2.2.4 查看主节点
[root@master1 ~]# curl -X GET 'http://10.201.106.131:9200/_cat/master'
GFN2hX0aQpySOSYqwXD8mw master1.com 10.201.106.131 master1.com
[root@master1 ~]# curl -X GET 'http://10.201.106.131:9200/_cat/master?v'
id host ip node
GFN2hX0aQpySOSYqwXD8mw master1.com 10.201.106.131 master1.com 查看集群健康状态：
[root@master1 ~]# curl -X GET 'http://10.201.106.131:9200/_cat/health?v'
epoch timestamp cluster status node.total node.data shards pri relo init unassign pending_tasks
1523578507 08:15:07 myes green 3 3 0 0 0 0 0 0 2.3.5 _cluster 专用于查看集群的子项
[root@master1 ~]# curl -XGET 'http://10.201.106.131:9200/_cluster/health?v'
{"cluster_name":"myes","status":"green","timed_out":false,"number_of_nodes":3,"number_of_data_nodes":3,"active_primary_shards":0,"active_shards":0,"relocating_shards":0,"initializing_shards":0,"unassigned_shards":0,"delayed_unassigned_shards":0,"number_of_pending_tasks":0,"number_of_in_flight_fetch":0}pretty美观方式显示[root@master1 ~]# curl -XGET 'http://10.201.106.131:9200/_cluster/health?pretty'
{"cluster_name" : "myes","status" : "green","timed_out" : false,"number_of_nodes" : 3,"number_of_data_nodes" : 3,"active_primary_shards" : 0,"active_shards" : 0,"relocating_shards" : 0,"initializing_shards" : 0,"unassigned_shards" : 0,"delayed_unassigned_shards" : 0,"number_of_pending_tasks" : 0,"number_of_in_flight_fetch" : 0
}[root@master1 ~]# curl -XGET 'http://10.201.106.131:9200/_cluster/health?level=cluster&pretty'
3、cluster API
3.1 查看集群版本
[root@master1 ~]# curl -XGET 'http://10.201.106.131:9200/_cluster/state/version?pretty'
{"cluster_name" : "myes","version" : 7
}3.2 查看谁是主节点
[root@master1 ~]# curl -XGET 'http://10.201.106.131:9200/_cluster/state/master_node?pretty'
{"cluster_name" : "myes","master_node" : "GFN2hX0aQpySOSYqwXD8mw"
}查看所有节点：
[root@master1 ~]# curl -XGET 'http://10.201.106.131:9200/_cluster/state/nodes?pretty'
{"cluster_name" : "myes","nodes" : {"Mv0nNWAaTz6v9OD_iTinIA" : {"name" : "master2.com","transport_address" : "inet[/10.201.106.132:9300]","attributes" : { }},"GFN2hX0aQpySOSYqwXD8mw" : {"name" : "master1.com","transport_address" : "inet[/10.201.106.131:9300]","attributes" : { }},"YAY5iFmJQAGHa6OuvLaMuA" : {"name" : "master3.com","transport_address" : "inet[/10.201.106.133:9300]","attributes" : { }}}
}3.3 查看集群统计数据
[root@master1 ~]# curl -XGET 'http://10.201.106.131:9200/_cluster/stats/?pretty'4、节点状态信息
4.1 查看节点信息
[root@master1 ~]# curl -XGET 'http://10.201.106.131:9200/_nodes/stats/?pretty'5、Plusins（插件）
5.1 查看ES（Elasticsearch）插件目录
[root@master1 ~]# rpm -ql elasticsearch | grep plugin
/usr/share/elasticsearch/bin/plugin
/usr/share/elasticsearch/plugins #插件目录5.2 列出所有插件
查看使用帮助：
[root@master1 ~]# /usr/share/elasticsearch/bin/plugin -h[root@master1 ~]# /usr/share/elasticsearch/bin/plugin -l
Installed plugins:- No plugin detected in /usr/share/elasticsearch/plugins5.3 安装插件
直接通过URL安装插件：
[root@master1 ~]# /usr/share/elasticsearch/bin/plugin -i marvel -u http://10.201.106.1:8080/plugins/marvel-latest.zip
-> Installing marvel...
Trying http://10.201.106.1:8080/plugins/marvel-latest.zip...
Downloading .............................DONE
Installed marvel into /usr/share/elasticsearch/plugins/marvel列出安装的插件：
[root@master1 ~]# /usr/share/elasticsearch/bin/plugin -l
Installed plugins:- marvel本地安装方法：
下载目录文件（不太好用）：
wget -c -r -np -k -L -p http://10.201.106.1:8080/plugins/ [root@master1 plugins]# pwd
/root/10.201.106.1:8080/plugins
[root@master1 plugins]# ls
bigdesk-latest.zip index.html
elasticsearch-head-latest.zip ~login
elasticsearch-kopf-master.zip marvel-latest.zip
将以上文件mv到root家目录下本地安装bigdesk插件：
[root@master1 ~]# /usr/share/elasticsearch/bin/plugin -i bigdesk -u file:///root/bigdesk-latest.zip查看：
[root@master1 ~]# /usr/share/elasticsearch/bin/plugin -l
Installed plugins:- marvel- bigdesk安装其他插件：
[root@master1 ~]# /usr/share/elasticsearch/bin/plugin -i head -u file:///root/elasticsearch-head-latest.zip[root@master1 ~]# /usr/share/elasticsearch/bin/plugin -i kopf -u file:///root/elasticsearch-kopf-master.zip5.4 访问插件
http://10.201.106.131:9200/_plugin/marvel
http://10.201.106.131:9200/_plugin/bigdesk
http://10.201.106.131:9200/_plugin/head
http://10.201.106.131:9200/_plugin/kopf
6、索引
6.1 查看刚才插件安装自动生成的索引
[root@master1 ~]# curl -XGET 'http://10.201.106.131:9200/_cat/indices?v'
health status index pri rep docs.count docs.deleted store.size pri.store.size
green open .marvel-2018.04.13 1 1 435 0 3.9mb 2.1mb
green open .marvel-kibana 1 1 1 0 6.5kb 3.2kb 6.2 创建索引下的文档
郭靖同学，性别男，年龄25，课程：降龙十八掌
[root@master1 ~]# curl -XPUT '10.201.106.131:9200/students/class1/1?pretty' -d '
> {
> "first_name":"Jing",
> "last_name":"Guo",
> "gender":"Male",
> "age":25,
> "courses":"Xianglong Shiba Zhang"
> }'
{"_index" : "students","_type" : "class1","_id" : "1","_version" : 1,"created" : true
}添加第二个同学：
[root@master1 ~]# curl -XPUT '10.201.106.131:9200/students/class1/2?pretty' -d '
> {
> "first_name":"Rong",
> "last_name":"Huang",
> "gender":"Female",
> "age":23,
> "courses":"Luoying Shenjian"
> }'
{"_index" : "students","_type" : "class1","_id" : "2","_version" : 1,"created" : true
}6.3 显示刚才创建的索引下的文档
[root@master1 ~]# curl -XGET 'localhost:9200/students/class1/1?pretty'
{"_index" : "students","_type" : "class1","_id" : "1","_version" : 1,"found" : true,"_source":
{
"first_name":"Jing",
"last_name":"Guo",
"gender":"Male",
"age":25,
"courses":"Xianglong Shiba Zhang"
}
}查看第二个同学：
[root@master1 ~]# curl -XGET 'localhost:9200/students/class1/2?pretty'put重复ID，会被替换。建议生产环境，使用ID生成器6.4 更新文档
PUT方法会覆盖原有文档：PUT方法会覆盖原有文档：
修改黄蓉的年龄：
[root@master1 ~]# curl -XPOST 'localhost:9200/students/class1/2/_update?pretty' -d '
{
"doc":{"age":22}
}'
{"_index" : "students","_type" : "class1","_id" : "2","_version" : 2
}查看：
[root@master1 ~]# curl -XGET 'localhost:9200/students/class1/2?pretty'
{"_index" : "students","_type" : "class1","_id" : "2","_version" : 2,"found" : true,"_source":{"first_name":"Rong","last_name":"Huang","gender":"Female","age":22,"courses":"Luoying Shenjian"}6.5 删除文档
[root@master1 ~]# curl -XDELETE 'localhost:9200/students/class1/2'
{"found":true,"_index":"students","_type":"class1","_id":"2","_version":3}[root@master1 ~]# 查看已经没找到ID2的文档信息：
[root@master1 ~]# curl -XGET 'localhost:9200/students/class1/2?pretty'
{"_index" : "students","_type" : "class1","_id" : "2","found" : false
}6.6 删除整个索引
查看有哪些索引：
[root@master1 ~]# curl -XGET 'localhost:9200/_cat/indices?v'
health status index pri rep docs.count docs.deleted store.size pri.store.size
green open .marvel-2018.04.13 1 1 4942 0 31.5mb 16mb
green open students 5 1 1 0 7.8kb 3.9kb
green open .marvel-kibana 1 1 1 0 6.5kb 3.2kb 删除students索引：
[root@master1 ~]# curl -XDELETE 'localhost:9200/students'
{"acknowledged":true}再查看索引，students已经没了：
[root@master1 ~]# curl -XGET 'localhost:9200/_cat/indices?v'6.7 重新创建文档
[root@master1 ~]# curl -XPUT '10.201.106.131:9200/students/class1/1?pretty' -d '
> {
> "first_name":"Jing",
> "last_name":"Guo",
> "gender":"Male",
> "age":25,
> "courses":"Xianglong Shiba Zhang"
> }'[root@master1 ~]# curl -XPUT '10.201.106.131:9200/students/class/2?pretty' -d '
> {
> "first_name":"Rong",
> "last_name":"Huang",
> "gender":"Female",
> "age":23,
> "courses":"Luoying shenjian"
> }'7、数据查询
7.1 列出索引下的所有文档
全量查询,较少使用
[root@master1 ~]# curl -XGET 'localhost:9200/students/_search?pretty'qeury body查询方式，能编写更为复杂的查询：
[root@master1 ~]# curl -XGET 'localhost:9200/students/_search?pretty' -d '
> {
> "query": { "match_all": {} }
> }'7.2 查询所有索引
数据特别多
[root@master1 ~]# curl -XGET 'localhost:9200/_search?pretty'/_search：所有索引；
/INDEX_NAME/_search：单索引；
/INDEX1，INDEX2/_search：多索引；
/s*,t*/_search：通配符查找索引
/students/class1/_search：单类型搜索
/students/class1,class2/_search：多类型搜索7.3 几种查询方式
1、GET /_search?q='Xianglong'
2、GET /_search?q='Xianglong Shiba Zhang'
3、GET /_search?q=courses:'Xianglong Shibao Zhang'
4、GET /_search?q=courses:'Xianglong'前两个：表示在_all域搜索；
后两个：在指定的域上搜索；7.4 几种查询方式测试
删除
[root@master1 ~]# curl -XDELETE 'localhost:9200/students/class/1'[root@master1 ~]# curl -XDELETE 'localhost:9200/students/class/2'
{"found":true,"_index":"students","_type":"class","_id":"2","_version":2}[root@master1 ~]# 添加：
[root@master1 ~]# curl -XPUT 'localhost:9200/students/class1/1?pretty' -d '
{
"name": "Guo Jing",
"gender": "Male",
"age": 25,
"class": "Gai Bang"
}'[root@master1 ~]# curl -XPUT 'localhost:9200/students/class1/2?pretty' -d '
{
"name": "Yang Guo",
"gender": "Male",
"age": 17,
"class": "Gumu Pai"
}'
{"_index" : "students","_type" : "class1","_id" : "2","_version" : 1,"created" : true
}查询：
[root@master1 ~]# curl -XGET 'localhost:9200/students/_search?q="Guo"'
{"took":36,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":2,"max_score":0.11506981,"hits":[{"_index":"students","_type":"class1","_id":"1","_score":0.11506981,"_source":
{
"name": "Guo Jing",
"gender": "Male",
"age": 25,
"class": "Gai Bang"
}},{"_index":"students","_type":"class1","_id":"2","_score":0.11506981,"_source":
{
"name": "Yang Guo",
"gender": "Male",
"age": 17,
"class": "Gumu Pai"添加
[root@master1 ~]# curl -XPUT 'localhost:9200/students/class1/3?pretty' -d '
{
"name": "Huang Rong",
"gender": "Female",
"age": 22,
"parent": "Guo Xiaotian"
}'
{"_index" : "students","_type" : "class1","_id" : "3","_version" : 1,"created" : true
}只要域中带guo，都能搜出来：
[root@master1 ~]# curl -XGET 'localhost:9200/students/_search?q="Guo"'
{"took":12,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":3,"max_score":0.11506981,"hits":[{"_index":"students","_type":"class1","_id":"1","_score":0.11506981,"_source":
{
"name": "Guo Jing",
"gender": "Male",
"age": 25,
"class": "Gai Bang"
}},{"_index":"students","_type":"class1","_id":"2","_score":0.11506981,"_source":
{
"name": "Yang Guo",
"gender": "Male",
"age": 17,
"class": "Gumu Pai"
}},{"_index":"students","_type":"class1","_id":"3","_score":0.11506981,"_source":
{
"name": "Huang Rong",
"gender": "Female",
"age": 22,
"parent": "Guo Xiaotian"
}}]}}[只搜索Guo Jing
[root@master1 ~]# curl -XGET 'localhost:9200/students/_search?q="Guo%20Jing"'{"took":11,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":1,"max_score":0.23013961,"hits":[{"_index":"students","_type":"class1","_id":"1","_score":0.23013961,"_source":
{
"name": "Guo Jing",
"gender": "Male",
"age": 25,
"class": "Gai Bang"查询name=Guo
[root@master1 ~]# curl -XGET 'localhost:9200/students/_search?q=name:"Guo"'
{"took":30,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":2,"max_score":0.19178301,"hits":[{"_index":"students","_type":"class1","_id":"1","_score":0.19178301,"_source":
{
"name": "Guo Jing",
"gender": "Male",
"age": 25,
"class": "Gai Bang"
}},{"_index":"students","_type":"class1","_id":"2","_score":0.19178301,"_source":
{
"name": "Yang Guo",
"gender": "Male",
"age": 17,
"class": "Gumu Pai"
}}]}}[再添加一个人：
[root@master1 ~]# curl -XPUT 'localhost:9200/students/class1/4?pretty' -d '
> {
> "name": "GuoXiang",
> "gender": "Female",
> "age": 10,
> "class": "Emei Pai"
> }'再次搜索Guo，没有郭襄（切词后的结果）：
[root@master1 ~]# curl -XGET 'localhost:9200/students/_search?q=name:"Guo"'
{"took":18,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":2,"max_score":0.19178301,"hits":[{"_index":"students","_type":"class1","_id":"1","_score":0.19178301,"_source":
{
"name": "Guo Jing",
"gender": "Male",
"age": 25,
"class": "Gai Bang"
}},{"_index":"students","_type":"class1","_id":"2","_score":0.19178301,"_source":
{
"name": "Yang Guo",
"gender": "Male",
"age": 17,
"class": "Gumu Pai"
}}]}}只搜Guo Jing：
[root@master1 ~]# curl -XGET 'localhost:9200/students/_search?q=name:"Guo%20Jing"'
{"took":21,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":1,"max_score":0.38356602,"hits":[{"_index":"students","_type":"class1","_id":"1","_score":0.38356602,"_source":
{
"name": "Guo Jing",
"gender": "Male",
"age": 25,
"class": "Gai Bang"
}}]}}[root@master1 ~]# 7.5 年龄搜索测试
[root@master1 ~]# curl -XGET 'localhost:9200/students/_search?q=25'
{"took":10,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":1,"max_score":0.11506981,"hits":[{"_index":"students","_type":"class1","_id":"1","_score":0.11506981,"_source":
{
"name": "Guo Jing",
"gender": "Male",
"age": 25,
"class": "Gai Bang"
}}]}}再加一个人，声明25人之一
[root@master1 ~]# curl -XPUT 'localhost:9200/students/class1/5' -d '
> {
> "name": "Xiaolong Nv",
> "gender": "Female",
> "age": 18,
> "description": "one of 25"
> }'再搜索25：
[root@master1 ~]# curl -XGET 'localhost:9200/students/_search?q=25'
{"took":12,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":2,"max_score":0.11506981,"hits":[{"_index":"students","_type":"class1","_id":"5","_score":0.11506981,"_source":
{
"name": "Xiaolong Nv",
"gender": "Female",
"age": 18,
"description": "one of 25"
}},{"_index":"students","_type":"class1","_id":"1","_score":0.11506981,"_source":
{
"name": "Guo Jing",
"gender": "Male",
"age": 25,
"class": "Gai Bang"
}}]}}[root@master1 ~]# 7.6 通过marvel插件链接插件
浏览器访问
http://10.201.106.131:9200/_plugin/marvel/sense/8、映射
8.1 查看指定类型的mapping
[root@master1 ~]# curl 'localhost:9200/students/_mapping/class1?pretty'
{"students" : {"mappings" : {"class1" : {"properties" : {"age" : {"type" : "long"},"class" : {"type" : "string"},"courses" : {"type" : "string"},"description" : {"type" : "string"},"first_name" : {"type" : "string"},"gender" : {"type" : "string"},"last_name" : {"type" : "string"},"name" : {"type" : "string"},"parent" : {"type" : "string"}}}}}
}转载于:https://blog.51cto.com/zhongle21/2103449
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