您如何设置 neo4j 以与 Google Compute Engine 配合使用?

本文介绍了您如何设置 neo4j 以与 Google Compute Engine 配合使用?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我想知道如何让 neo4j 与 Google Compute Engine 一起工作.有没有人做过这个?您遇到了哪些问题?

解决方案

给你，

基本设置

安装和设置 gcloud
安装py2neo
创建您的 GCE 实例(https://console.developers.google.com/project/PROJECT_APPID/compute/instancesAdd) 使用镜像(debian-7-wheezy-v20141021，Debian GNU/Linux 7.7 (wheezy) amd64 构建于 2014-10-21 或 ANY)
SSH 你的实例 gcloud compute ssh INSTANCE_NAME --zone AVAILABLE_ZONES -->AVAILABLE_ZONES
在 GCE 中下载并安装 neo4j - 您可能需要安装 java(修复)和 lsof(修复:apt-get install lsof).

GCE 配置

配置服务器 neo4j
(可选)，添加 neo4j https 支持
将 neo4j 端口 7474 列入白名单(更多关于网络和防火墙)>
从 github用户名:密码>
gcloud compute firewall-rules create neo4j --network default --allow tcp:7474

玩转

启动neo4j服务器./bin/neo4j start
检查您正在运行的实例@http://IP_ADDRESS:7474/

一旦 `py2neo` 安装和服务器启动，尝试一些 pycode 来测试它

>>从 py2neo.neo4j 导入 GraphDatabaseService，CypherQuery>># 建立到本地图数据库的链接.>># 当 () 留空时默认为 http://localhost:7474/db/data/>>图 = GraphDatabaseService('http://IP_ADDRESS:7474/db/data/')>>CypherQuery(graph, "CREATE (n {name:'Example'}) RETURN n;").execute()

以上python设置/代码，你也可以在GAE中使用.

参考文献

检查 GCE 的定价.
py2neo 食谱
计算实例
gcloud 计算

Appengine + Neo4j

from py2neo import neo4jGRAPH_DB = neo4j.GraphDatabaseService('http://uname:psswd@localhost:7474/db/data/')如果 IS_PROD:GRAPH_DB = neo4j.GraphDatabaseService('http://uname:psswd@host:port/db/data/')def _execute(查询):"执行所有neo4j查询并返回Record对象列表.返回:返回 Record 对象的列表."尝试:结果 = neo4j.CypherQuery(GRAPH_DB, query).execute()# logging.info(result.data)返回结果除了 neo4j.CypherError 作为错误:logging.error(error.exception)除了 DeadlineExceededError 作为死:logging.warn(死)除了 urlfetch_errors.InternalTransientError 作为 tra_error:logging.warn(tra_error)除了 httplib.HTTPException 作为 exp:logging.warn(exp)除了作为 soc 的 neo4j.http.SocketError:logging.warn(soc)

I'm wondering how one would get neo4j to work with Google Compute Engine. Has anybody done this? What problems did you encounter?

解决方案

Here you go,

Basic Setup

Install and setup gcloud
Install py2neo
Create your GCE Instance (https://console.developers.google.com/project/PROJECT_APPID/compute/instancesAdd) using image (debian-7-wheezy-v20141021, Debian GNU/Linux 7.7 (wheezy) amd64 built on 2014-10-21 or ANY)
SSH your instance gcloud compute ssh INSTANCE_NAME --zone AVAILABLE_ZONES --> AVAILABLE_ZONES
Download and Install neo4j in GCE - You may need to install java(Fix) and lsof (Fix: apt-get install lsof).

Configuration for GCE

Configure server neo4j
(Optional), Add neo4j https support
Whitelist neo4j port 7474 (More on Networking and Firewalls)
Add security username:password from github
gcloud compute firewall-rules create neo4j --network default --allow tcp:7474

Play around

Start neo4j server ./bin/neo4j start
Check your running instances @ http://IP_ADDRESS:7474/

Once `py2neo` Installed and server started, try some pycode to test it

>> from py2neo.neo4j import GraphDatabaseService, CypherQuery
>> # Set up a link to the local graph database.
>> # When () left blank defaults to http://localhost:7474/db/data/
>> graph = GraphDatabaseService('http://IP_ADDRESS:7474/db/data/')
>> CypherQuery(graph, "CREATE (n {name:'Example'}) RETURN n;").execute()

Above python setup / code, you can use it in GAE as well.

Edit: Appengine + Neo4j

from py2neo import neo4j
GRAPH_DB = neo4j.GraphDatabaseService(
        'http://uname:psswd@localhost:7474/db/data/')
if IS_PROD:
    GRAPH_DB = neo4j.GraphDatabaseService(
        'http://uname:psswd@host:port/db/data/')

def _execute(query):
    """Execute all neo4j queries and return list of Record objects.

    Returns:
      Returns list of Record objects.
    """
    try:
        result = neo4j.CypherQuery(GRAPH_DB, query).execute()
        # logging.info(result.data)
        return result
    except neo4j.CypherError as error:
        logging.error(error.exception)
    except DeadlineExceededError as dead:
        logging.warn(dead)
    except urlfetch_errors.InternalTransientError as tra_error:
        logging.warn(tra_error)
    except httplib.HTTPException as exp:
        logging.warn(exp)
    except neo4j.http.SocketError as soc:
        logging.warn(soc)

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lsof