How do you set up neo4j to work with Google Compute Engine?

问题

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

回答1:

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.

References

Check pricing of GCE.
py2neo Cookbook
Compute Instances
gcloud compute

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)

回答2:

the easiest and the safest way is to use docker neo4j image

and this is docker docs, to install and deploy on google compute engine

来源：https://stackoverflow.com/questions/26751346/how-do-you-set-up-neo4j-to-work-with-google-compute-engine

标签

python

neo4j

google-compute-engine