如何解决无法使用Neomodel访问Neo4j容器
我有2个不同的容器与docker-compose一起运行。这是我的docker-compose.yml：
version: '3'
services:
#Create backend container
backend:
build: ./backend # path to Dockerfile
ports: # Port binding to host from docker container
- "5000:5000"
container_name: buzzworks-backend
volumes:
- ${PWD}/backend:/app
depends_on:
- db
environment:
FLASK_APP: flaskr
FLASK_ENV: development
NEO_USER: ${NEO_USER}
NEO_PW: ${NEO_PW}
db:
image: neo4j:4.1.1
container_name: buzzworks-neo4j
ports:
- "7474:7474"
- "7687:7687"
volumes:
- ${HOME}/neo4j/data:/data
- ${HOME}/neo4j/logs:/logs
- ${HOME}/neo4j/import:/var/lib/neo4j/import
- ${HOME}/neo4j/plugins:/plugins
environment:
NEO4J_AUTH: ${NEO_USER}/${NEO_PW}
NEO4J_dbms_logs_debug_level: ${NEO_DEBUG_LEVEL}
它生成的相应网络对我来说很合适：
{
"Name": "buzzworksai_default","Id": "db4efc0286a9464cadde13cf1306f241b7a353295904b15b163e761289ba9d3f","Created": "2020-08-27T11:23:15.925483629-04:00","Scope": "local","Driver": "bridge","EnableIPv6": false,"IPAM": {
"Driver": "default","Options": null,"Config": [
{
"Subnet": "172.18.0.0/16","Gateway": "172.18.0.1"
}
]
},"Internal": false,"Attachable": true,"Ingress": false,"ConfigFrom": {
"Network": ""
},"ConfigOnly": false,"Containers": {
"640650c163f746e480bf677abdeaf8edf6483b7dac2a260c2e3b3bc3319dffef": {
"Name": "buzzworks-neo4j","EndpointID": "ddbad1a179cc51655a779b07c91d6d949b0612bf985abc9c45e1794b35f4a565","MacAddress": "02:42:ac:12:00:03","IPv4Address": "172.18.0.3/16","IPv6Address": ""
},"ba47173d1dbc31e4e416eaf30d2314e6d2a20a36b389cb76cd1edcbea489184e": {
"Name": "buzzworks-backend","EndpointID": "17ff278f3db5ad609be682cdf912ca755587e07ef08d6023bf3ecb33a6c4bc31","MacAddress": "02:42:ac:12:00:02","IPv4Address": "172.18.0.2/16","IPv6Address": ""
}
},"Options": {},"Labels": {
"com.docker.compose.network": "default","com.docker.compose.project": "buzzworksai","com.docker.compose.version": "1.26.2"
}
}
]
我可以很好地访问neo4j数据库的Web界面。当我尝试使用neomodel连接到数据库时，会发生问题。我尝试使用python容器外壳中的适当凭据运行neomodel_remove_labels --db bolt://<user>:<password>@db:7687。我收到此错误：
Traceback (most recent call last):
File "/usr/local/bin/neomodel_remove_labels",line 35,in <module>
main()
File "/usr/local/bin/neomodel_remove_labels",line 30,in main
db.set_connection(bolt_url)
File "/usr/local/lib/python3.8/dist-packages/neomodel/util.py",line 93,in set_connection
self.driver = GraphDatabase.driver(u.scheme + '://' + hostname,File "/usr/local/lib/python3.8/dist-packages/neo4j/__init__.py",line 108,in driver
return Driver(uri,**config)
File "/usr/local/lib/python3.8/dist-packages/neo4j/__init__.py",line 147,in __new__
return subclass(uri,line 221,in __new__
pool.release(pool.acquire())
File "/usr/local/lib/python3.8/dist-packages/neobolt/direct.py",line 715,in acquire
return self.acquire_direct(self.address)
File "/usr/local/lib/python3.8/dist-packages/neobolt/direct.py",line 608,in acquire_direct
connection = self.connector(address,error_handler=self.connection_error_handler)
File "/usr/local/lib/python3.8/dist-packages/neo4j/__init__.py",line 218,in connector
return connect(address,**dict(config,**kwargs))
File "/usr/local/lib/python3.8/dist-packages/neobolt/direct.py",line 972,in connect
raise last_error
File "/usr/local/lib/python3.8/dist-packages/neobolt/direct.py",line 963,in connect
s,der_encoded_server_certificate = _secure(s,host,security_plan.ssl_context,**config)
File "/usr/local/lib/python3.8/dist-packages/neobolt/direct.py",line 854,in _secure
s = ssl_context.wrap_socket(s,server_hostname=host if HAS_SNI and host else None)
File "/usr/lib/python3.8/ssl.py",line 500,in wrap_socket
return self.sslsocket_class._create(
File "/usr/lib/python3.8/ssl.py",line 1040,in _create
self.do_handshake()
File "/usr/lib/python3.8/ssl.py",line 1309,in do_handshake
self._sslobj.do_handshake()
OSError: [Errno 0] Error
我尝试使用bolt://<user>:<password>@localhost:7687从主机访问容器，但是仍然出现相同的错误。
解决方法
您需要在docker-compose文件上设置network选项。请阅读此link，然后您将很好地理解它。
您应该执行以下操作：
version: '3'
services:
#Create backend container
backend:
build: ./backend # path to Dockerfile
ports: # Port binding to host from docker container
- "5000:5000"
container_name: buzzworks-backend
volumes:
- ${PWD}/backend:/app
depends_on:
- db
environment:
FLASK_APP: flaskr
FLASK_ENV: development
NEO_USER: ${NEO_USER}
NEO_PW: ${NEO_PW}
networks:
- mynetwork
db:
image: neo4j:4.1.1
container_name: buzzworks-neo4j
ports:
- "7474:7474"
- "7687:7687"
volumes:
- ${HOME}/neo4j/data:/data
- ${HOME}/neo4j/logs:/logs
- ${HOME}/neo4j/import:/var/lib/neo4j/import
- ${HOME}/neo4j/plugins:/plugins
environment:
NEO4J_AUTH: ${NEO_USER}/${NEO_PW}
NEO4J_dbms_logs_debug_level: ${NEO_DEBUG_LEVEL}
networks:
- mynetwork
networks:
mynetwork:
我认为这可能是与neo4j有关的问题：https://github.com/neo4j/neo4j/issues/12392
有建议：
Neo4j 4.0的加密默认情况下处于关闭状态。您需要明确 重新打开服务器配置文件中Bolt服务器的加密功能。然后 您将能够使用默认的1.7 python驱动程序进行连接 设置。
以下是如何重新启用加密的示例 Bolt Server，目录中包含private.key和public.crt $ neo4jHome / certificates / bolt。
dbms.connector.bolt.enabled=true # allows both encrypted and unencrypted driver connections dbms.connector.bolt.tls_level=OPTIONAL dbms.ssl.policy.bolt.enabled=true dbms.ssl.policy.bolt.base_directory=certificates/bolt #dbms.ssl.policy.bolt.private_key=private.key #dbms.ssl.policy.bolt.public_certificate=public.crt您可以选择任何受信任的密钥和证书服务来生成 此处使用的私钥和公共证书。
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