面向图的数据库Neo4J部署与使用

2017-12-30 11:42:08来源:oschina作者:xiaomin0322人点击

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面向图的数据库Neo4J部署与使用 博客分类: neo4j
Neo4J介绍
图数据库的需求能以明显直观的方式存放图数据,而不是扭曲变化为别的替代方式能简单地进行图操作,例如寻路,遍历等
图数据库的基本思想图(Graph)由节点(node,顶点)和关系(relationship,边)组成图在节点上记录数据(节点的属性,property)节点由关系组织成图,关系也具有属性寻路(Traversal,另一意思是遍历)在图上定位由节点组成的路径索引(index)将属性映射到节点或关系图数据库管理系统 管理 图 及其上的 索引Neo4J是当前主流的图数据库产品
Neo4J由Neo Technology开发的开源图数据库,该公司从2000年起就开始研发图数据库,目前neo4j已经成为领先的图数据库产品,思科,惠普,德意志电信等跨国企业均成为客户特点:直观的图模型存储完全支持ACID事务基于磁盘的持久存储支持海量数据,比如数十亿节点/关系/属性级别的数据高可用的分布式集群高度优化,迅速的图查询(Cypher图查询语言)可以嵌入(只需几个小jar文件),支持REST API
Neo4J的安装 官网:
http://www.neo4j.org/Neo4j的部署模式独立模式:独立的服务器,可以通过REST API、或基于语言的驱动等访问嵌入模式:提供若干库,嵌入到Java程序运行
##安装linux版本http://dist.neo4j.org/neo4j-community-1.9.4-unix.tar.gz下载后解包 (这里下载的是社区版)切换root,运行./bin/neo4j install##安装neo4j需要首先安装JDK# tar zxf neo4j-community-1.9.4-unix.tar.gz# mv neo4j-community-1.9.4 neo4j# cd neo4j/bin[root
@linux bin]# ./neo4j installGraph-like power should be handled carefully. What user should run Neo4j? [oracle] root
##修改配置文件./conf/neo4j-server.propertiesorg.neo4j.server.webserver.address=0.0.0.0
##启动[root
@linux bin]# ./neo4j statusNeo4j Server is not running[root
@linux bin]# ./neo4j startWARNING: Max 1024 open files allowed, minimum of 40 000 recommended. See the Neo4j manual.Using additional JVM arguments: -server -XX:+DisableExplicitGC -Dorg.neo4j.server.properties=conf/neo4j-server.properties -Djava.util.logging.config.file=conf/logging.properties -Dlog4j.configuration=file:conf/log4j.properties -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabledStarting Neo4j Server...process [1128]... waiting for server to be ready....... OK.Go to http://localhost:7474/webadmin/ for administration interface.[root
@linux bin]# ./neo4j statusNeo4j Server is running at pid 1128
##远程web UIhttp://10.10.10.8:7474/webadmin/###Web UI: Consolehttp://10.10.10.8:7474/webadmin/#/console/##用简单的语句测试

neo4j-sh(0)$CREATE(ee{name:"Emil",from:"Sweden"})RETURNee.name;
==>+---------+
==>|ee.name|
==>+---------+
==>|"Emil"|
==>+---------+
==>1row
==>Nodescreated:1
==>Propertiesset:2
==>
==>1100ms
neo4j-sh(0)$STARTee=node(*)WHEREee.name!="Emil"RETURNee;
==>+------------------------------------+
==>|ee|
==>+------------------------------------+
==>|Node[1]{name:"Emil",from:"Sweden"}|
==>+------------------------------------+
==>1row
==>
==>502ms
neo4j-sh (0)$

##Shell命令参考
http://docs.neo4j.org/chunked/1.9.4/shell-commands.html
Neo4J集群 模拟测试Neo4j高可用下载Neo4j企业版解压为多个不同目录分别修改配置文件,使监听不同的端口启动多个Neo4j服务器进程Neo4j手册第26.6节类似Mysql的高可用集群,可以实现读写分离,写数据被引导到Master节点,再从多个slave读数据
##下载企业版并解压缩到三个目录
http://dist.neo4j.org/neo4j-enterprise-1.9.4-unix.tar.gz# tar zxf neo4j-enterprise-1.9.4-unix.tar# mv neo4j-enterprise-1.9.4 neo4j01[root
@linux neo4j]# cp -R neo4j01 neo4j02[root@linux neo4j]# cp -R neo4j01 neo4j03
##1号节点的配置文件 neo4j.properties
online_backup_server=127.0.0.1:6362
ha.server_id=1
ha.initial_hosts=127.0.0.1:5001,127.0.0.1:5002,127.0.0.1:5003
ha.server=127.0.0.1:6001
ha.cluster_server=127.0.0.1:5001
##1号节点的配置文件 Neo4j-server.properties
org.neo4j.server.webserver.address=0.0.0.0
org.neo4j.server.manage.console_engines=gremlin, shell
org.neo4j.server.database.mode=HA
org.neo4j.server.webserver.port=7474
org.neo4j.server.webserver.https.port=7473

##2号节点的配置文件 neo4j.properties
online_backup_server=127.0.0.1:6363
ha.server_id=2
ha.initial_hosts=127.0.0.1:5001,127.0.0.1:5002,127.0.0.1:5003
ha.server=127.0.0.1:6002
ha.cluster_server=127.0.0.1:5002
##2号节点的配置文件 Neo4j-server.properties
org.neo4j.server.webserver.address=0.0.0.0
org.neo4j.server.manage.console_engines=gremlin, shell
org.neo4j.server.database.mode=HA
org.neo4j.server.webserver.port=7484
org.neo4j.server.webserver.https.port=7483

##3号节点的配置文件 neo4j.properties
online_backup_server=127.0.0.1:6364
ha.server_id=3
ha.initial_hosts=127.0.0.1:5001,127.0.0.1:5002,127.0.0.1:5003
ha.server=127.0.0.1:6003
ha.cluster_server=127.0.0.1:5003
##3号节点的配置文件 Neo4j-server.properties
org.neo4j.server.webserver.address=0.0.0.0
org.neo4j.server.manage.console_engines=gremlin, shell
org.neo4j.server.database.mode=HA
org.neo4j.server.webserver.port=7494
org.neo4j.server.webserver.https.port=7493

##启动三个neo4j实例[root@linux bin]# ./neo4j startWARNING: Max 1024 open files allowed, minimum of 40 000 recommended. See the Neo4j manual.Using additional JVM arguments: -server -XX:+DisableExplicitGC -Dorg.neo4j.server.properties=conf/neo4j-server.properties -Djava.util.logging.config.file=conf/logging.properties -Dlog4j.configuration=file:conf/log4j.properties -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabledStarting Neo4j Server...HA instance started in process [2244]. Will be operational once connected to peers. See /nosql/neo4j/neo4j01/data/log/console.log for current status.[root@linux bin]#[root@linux bin]# cd /nosql/neo4j/neo4j02/bin/[root@linux bin]# ./neo4j startWARNING: Max 1024 open files allowed, minimum of 40 000 recommended. See the Neo4j manual.Using additional JVM arguments: -server -XX:+DisableExplicitGC -Dorg.neo4j.server.properties=conf/neo4j-server.properties -Djava.util.logging.config.file=conf/logging.properties -Dlog4j.configuration=file:conf/log4j.properties -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabledStarting Neo4j Server...HA instance started in process [2417]. Will be operational once connected to peers. See /nosql/neo4j/neo4j02/data/log/console.log for current status.[root@linux bin]#[root@linux bin]# cd /nosql/neo4j/neo4j03/bin/[root@linux bin]# ./neo4j startWARNING: Max 1024 open files allowed, minimum of 40 000 recommended. See the Neo4j manual.Using additional JVM arguments: -server -XX:+DisableExplicitGC -Dorg.neo4j.server.properties=conf/neo4j-server.properties -Djava.util.logging.config.file=conf/logging.properties -Dlog4j.configuration=file:conf/log4j.properties -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabledStarting Neo4j Server...HA instance started in process [2690]. Will be operational once connected to peers. See /nosql/neo4j/neo4j03/data/log/console.log for current status.[root@linux bin]#[root@linux bin]# jps2417 Bootstrapper2796 Jps2244 Bootstrapper2690 Bootstrapper[root@linux bin]#
##Web UI上观看高可用集群状态http://10.10.10.8:7474/webadmin/#/info/org.neo4j/High%20Availability/
http://blog.csdn.net/zq9017197/article/details/17717815

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