JanusGraph 安装

下载地址：https://github.com/JanusGraph/janusgraph/releases/

版本：Version 0.3.2 (June 16, 2019)

安装

解压 janusgraph-0.3.2-hadoop2.zip 文件

janusgraph单机版安装

注：本次安装janusgraph基于es和hbse，所以先安装es和hbase

1.安装jdk

2.安装janusgraph

unzip janusgraph-0.3.2-hadoop2.zip

3.配置启动配置文件conf/gremlin-server/gremlin-server.yaml

# Copyright 2019 JanusGraph Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

host: 192.168.2.116
port: 8182
scriptEvaluationTimeout: 30000
channelizer: org.apache.tinkerpop.gremlin.server.channel.WebSocketChannelizer
graphs: {
  graph: conf/gremlin-server/janusgraph-hbase-solr.properties
}
scriptEngines: {
  gremlin-groovy: {
    plugins: { org.janusgraph.graphdb.tinkerpop.plugin.JanusGraphGremlinPlugin: {},
               org.apache.tinkerpop.gremlin.server.jsr223.GremlinServerGremlinPlugin: {},
               org.apache.tinkerpop.gremlin.tinkergraph.jsr223.TinkerGraphGremlinPlugin: {},
               org.apache.tinkerpop.gremlin.jsr223.ImportGremlinPlugin: {classImports: [java.lang.Math], methodImports: [java.lang.Math#*]},
               org.apache.tinkerpop.gremlin.jsr223.ScriptFileGremlinPlugin: {files: [scripts/empty-sample.groovy]}}}}
serializers:
  - { className: org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV3d0, config: { ioRegistries: [org.janusgraph.graphdb.tinkerpop.JanusGraphIoRegistry] }}
  - { className: org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV3d0, config: { serializeResultToString: true }}
  - { className: org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV3d0, config: { ioRegistries: [org.janusgraph.graphdb.tinkerpop.JanusGraphIoRegistry] }}
  # Older serialization versions for backwards compatibility:
  - { className: org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV1d0, config: { ioRegistries: [org.janusgraph.graphdb.tinkerpop.JanusGraphIoRegistry] }}
  - { className: org.apache.tinkerpop.gremlin.driver.ser.GryoLiteMessageSerializerV1d0, config: {ioRegistries: [org.janusgraph.graphdb.tinkerpop.JanusGraphIoRegistry] }}
  - { className: org.apache.tinkerpop.gremlin.driver.ser.GryoMessageSerializerV1d0, config: { serializeResultToString: true }}
  - { className: org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerGremlinV2d0, config: { ioRegistries: [org.janusgraph.graphdb.tinkerpop.JanusGraphIoRegistry] }}
  - { className: org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerGremlinV1d0, config: { ioRegistries: [org.janusgraph.graphdb.tinkerpop.JanusGraphIoRegistryV1d0] }}
  - { className: org.apache.tinkerpop.gremlin.driver.ser.GraphSONMessageSerializerV1d0, config: { ioRegistries: [org.janusgraph.graphdb.tinkerpop.JanusGraphIoRegistryV1d0] }}
processors:
  - { className: org.apache.tinkerpop.gremlin.server.op.session.SessionOpProcessor, config: { sessionTimeout: 28800000 }}
  - { className: org.apache.tinkerpop.gremlin.server.op.traversal.TraversalOpProcessor, config: { cacheExpirationTime: 600000, cacheMaxSize: 1000 }}
metrics: {
  consoleReporter: {enabled: true, interval: 180000},
  csvReporter: {enabled: true, interval: 180000, fileName: /tmp/gremlin-server-metrics.csv},
  jmxReporter: {enabled: true},
  slf4jReporter: {enabled: true, interval: 180000},
  gangliaReporter: {enabled: false, interval: 180000, addressingMode: MULTICAST},
  graphiteReporter: {enabled: false, interval: 180000}}
maxInitialLineLength: 4096
maxHeaderSize: 8192
maxChunkSize: 8192
maxContentLength: 65536
maxAccumulationBufferComponents: 1024
resultIterationBatchSize: 64
writeBufferLowWaterMark: 32768
writeBufferHighWaterMark: 65536

4.配置启动配置文件conf/gremlin-server/janusgraph-hbase-solr.properties

# functionality. This setting is optional.  JanusGraph can use multiple
# heterogeneous index backends.  Hence, this option can appear more than
# once, so long as the user-defined name between "index" and "backend" is
# unique among appearances.Similar to the storage backend, this should be
# set to one of JanusGraph's built-in shorthand names for its standard
# index backends (shorthands: lucene, elasticsearch, es, solr) or to the
# full package and classname of a custom/third-party IndexProvider
# implementation.
#
# Default:    elasticsearch
# Data Type:  String
# Mutability: GLOBAL_OFFLINE
#
# Settings with mutability GLOBAL_OFFLINE are centrally managed in
# JanusGraph's storage backend.  After starting the database for the first
# time, this file's copy of this setting is ignored.  Use JanusGraph's
# Management System to read or modify this value after bootstrapping.
index.search.backend=solr
gremlin.graph=org.janusgraph.core.JanusGraphFactory
# The operation mode for Solr which is either via HTTP (`http`) or using
# SolrCloud (`cloud`)
#
# Default:    cloud
# Data Type:  String
# Mutability: GLOBAL_OFFLINE
#
# Settings with mutability GLOBAL_OFFLINE are centrally managed in
# JanusGraph's storage backend.  After starting the database for the first
# time, this file's copy of this setting is ignored.  Use JanusGraph's
# Management System to read or modify this value after bootstrapping.
index.search.solr.mode=http

# List of URLs to use to connect to Solr Servers (LBHttpSolrClient is
# used), don't add core or collection name to the URL.
#
# Default:    http://localhost:8983/solr
# Data Type:  class java.lang.String[]
# Mutability: MASKABLE
index.search.solr.http-urls=http://192.168.2.116:8983/solr
index.search.solr.mode=cloud
index.search.solr.zookeeper-ur=192.168.2.116:2181/solr
index.search.solr.configset=janusgraph

 janusgraph-hbase-solr.properties 配置文件说明：

storage.backend=hbase //使用HBase作为存储后端
storage.hostname=zookeeper-host1,zookeeper-host2,zookeeper-host3 //HBase的Zookeeper
storage.hbase.table=janusgraph//HBase存储JanusGraph元数据的表名
storage.hbase.ext.zookeeper.znode.parent=/hbase //HBase使用的Znode
storage.hbase.ext.hbase.zookeeper.property.clientPort=2181 //端口

HBase的查询是基于Rowkey，所以在条件查询这块是弱项，一旦Rowkey确定如果有新的查询就比较难。所以为了解决这个问题，JanusGraph引入了索引后端，下面我们介绍下如何配置Solr作为JanusGraph的索引后端。配置文件conf/janusgraph-hbase-solr.properties配置参数如下：

index.search.backend=solr //使用solr作为索引后端
index.search.solr.mode=cloud //solr使用集群模式
index.search.solr.zookeeper-url=zookeeper-host1:2181/solr,zookeeper-
host2:2181/solr,zookeeper-host3:2181/solr //HBase使用的Zookeeper
index.search.solr.configset=janusgraph //Solr使用HBase的元数据表名

5.启动服务

nohup bin/gremlin-server.sh  >log.log &