elasticsearch 1.7.6 学习
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搜索引擎
我本来选择的是elasticsearch 5.4 ,但是版本太新了,搭建过程全是坑,所以无奈选择了一个版本很低的1.7
安装Elasticsearch
[root@node1 ~]# java -versionopenjdk version "1.8.0_131"OpenJDK Runtime Environment (build 1.8.0_131-b11)OpenJDK 64-Bit Server VM (build 25.131-b11, mixed mode)[root@node1 ~]# ls -l /usr/bin/javalrwxrwxrwx. 1 root root 22 May 21 16:46 /usr/bin/java -> /etc/alternatives/java[root@node1 ~]# ls -l /etc/alternatives/javalrwxrwxrwx. 1 root root 73 May 21 16:46 /etc/alternatives/java -> /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.131-2.b11.el7_3.x86_64/jre/bin/java
配置java家目录。
[root@node1 ~]# vim /etc/profile.d/java.sh export JAVA_HOME=/usr[root@node1 ~]# . /etc/profile.d/java.sh
安装elasticsearch
/etc/elasticsearch
[root@node1 elasticsearch]# vim elasticsearch.yml
[root@node2 ~]# systemctl start elasticsearch
[root@node1 ~]# tcpdump -i eno16777736 -vvnn tcp port 9300tcpdump: listening on eno16777736, link-type EN10MB (Ethernet), capture size 65535 bytes17:24:19.630572 IP (tos 0x0, ttl 64, id 60804, offset 0, flags [DF], proto TCP (6), length 170) 192.168.30.133.52499 > 192.168.30.131.9300: Flags [P.], cksum 0xda72 (correct), seq 3018421775:3018421893, ack 457870399, win 229, options [nop,nop,TS val 3124034 ecr 3134684], length 11817:24:19.630998 IP (tos 0x0, ttl 64, id 33875, offset 0, flags [DF], proto TCP (6), length 72) 192.168.30.131.9300 > 192.168.30.133.52499: Flags [P.], cksum 0xbe93 (incorrect -> 0xad67), seq 1:21, ack 118, win 227, options [nop,nop,TS val 3135689 ecr 3124034], length 20
9300端口已经开启,并且开始互相通信。
[root@node1 ~]# curl -X GET 'http://node2.example.com:9200/?pretty'{ "status" : 200, "name" : "node2.example.com", "cluster_name" : "elasticsearch", "version" : { "number" : "1.7.6", "build_hash" : "c730b59357f8ebc555286794dcd90b3411f517c9", "build_timestamp" : "2016-11-18T15:21:16Z", "build_snapshot" : false, "lucene_version" : "4.10.4" }, "tagline" : "You Know, for Search"}
[root@node1 ~]# curl -X GET 'http://node2.example.com:9200/_cat'=^.^=/_cat/allocation/_cat/shards/_cat/shards/{index}/_cat/master/_cat/nodes/_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/plugins/_cat/fielddata/_cat/fielddata/{fields}
[root@node1 ~]# curl -X GET 'http://node2.example.com:9200/_cat/nodes?v'host ip heap.percent ram.percent load node.role master name node1.example.com 192.168.30.131 4 40 0.02 d * node1.example.com node2.example.com 192.168.30.132 4 40 0.01 d m node2.example.com node3.example.com 192.168.30.133 4 42 0.01 d m node3.example.com
健康查询
[root@node1 ~]# curl -X GET 'http://node2:9200/_cat/health?v'epoch timestamp cluster status node.total node.data shards pri relo init unassign pending_tasks 1495360000 17:46:40 elasticsearch green 3 3 0 0 0 0 0 0
集群健康查询
[root@node2 ~]# curl -X GET 'http://node2:9200/_cluster/health?pretty'{ "cluster_name" : "elasticsearch", "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}
详细的内容可以去官网去查看。
https://www.elastic.co/guide/en/elasticsearch/reference/current/index.html
ES的使用
引索组件:Lucene
搜索组件:ES
数据获取组件:solr,Nutch,Grub,Apeture
ES:索引是文档的容器
索引(index),类型(type),文件(document),映射(mapping)
Plugins可以扩展ES的功能。
比如添加自定义映射类型,本地脚本,自定义发现方式。
安装:
直接将插件放置于plugins目录就好。或者plugin命令去安装。
[root@node2 ~]# /usr/share/elasticsearch/bin/plugin -l
Installed plugins:
- No plugin detected in /usr/share/elasticsearch/plugins
安装插件
首先介绍一些常见插件:
[head插件]
介绍:
head插件是ES的一个可视化插件,head插件用来浏览,与ES数据进行交互的Web前端展示插件,是一个用来监视ES状态的客户端插件。
安装:
[root@node1 bin]# ./plugin install mobz/elasticsearch-head
测试:
[marvel插件]
介绍:
主要功能是监控,也可以用来当console来使用,它包含一个叫做Sense的交互式控制平台。使用户方便的通过浏览器去交互。
安装:
[root@node1 elasticsearch]# ./bin/plugin -i elasticsearch/marvel/latest
[bigdesk插件]
[root@node1 elasticsearch]# ./bin/plugin -lInstalled plugins: - head - license - bigdesk - kopf - marvel
全部安装完成之后,重启elasticsearch
[root@node1 elasticsearch]# curl -XPUT 'localhost:9200/students/class/1?pretty' -d '> {> "first_name":"Rong",> "last_name":"Huang",> "age":25,> "gender":"Male"> }'{ "_index" : "students", "_type" : "class", "_id" : "1", "_version" : 1, "created" : true}[root@node1 elasticsearch]# curl -XPUT 'localhost:9200/students/class/2?pretty' -d '{ "first_name":"Jing", "last_name":"Guo", "age":26, "gender":"Female"}'{ "_index" : "students", "_type" : "class", "_id" : "2", "_version" : 1, "created" : true}
{
"took" : 10,
"timed_out" : false,
"_shards" : {
"total" : 5,
"successful" : 5,
"failed" : 0
},
"hits" : {
[root@node1 elasticsearch]# curl -XGET 'localhost:9200/_search?q='Guo'&pretty'{ "took" : 10, "timed_out" : false, "_shards" : { "total" : 7, "successful" : 7, "failed" : 0 }, "hits" : { "total" : 1, "max_score" : 0.15342641, "hits" : [ { "_index" : "students", "_type" : "class", "_id" : "2", "_score" : 0.15342641, "_source":{ "first_name":"Jing", "last_name":"Guo", "age":26, "gender":"Female"} } ] }}
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