How to resolve Python Bolt Driver when executed gives an error "("Failed to establish connection to {!r}".format(address))"
Take the example of Python with the latest Bolt driver 1.2.
Here is the sample code
from neo4j.v1 import GraphDatabase
uri = "bolt://localhost:7687"
driver = GraphDatabase.driver(uri, auth=("neo4j", "Password"))
and when run it gives the following error:
Traceback (most recent call last): File "/Users/rk/Documents/Work/Python-Bolt/boltTest.py", line 3, in <module> driver = GraphDatabase.driver(uri, auth=("neo4j", "Password")) File "/Library/Python/2.7/site-packages/neo4j/v1/api.py", line 112, in driver return driver_class(uri, **config) File "/Library/Python/2.7/site-packages/neo4j/v1/direct.py", line 56, in __init__ pool.acquire() File "/Library/Python/2.7/site-packages/neo4j/v1/direct.py", line 37, in acquire return self.acquire_direct(resolved_addresses[0]) File "/Library/Python/2.7/site-packages/neo4j/bolt/connection.py", line 386, in acquire_direct connection = self.connector(address) File "/Library/Python/2.7/site-packages/neo4j/v1/direct.py", line 55, in <lambda> pool = DirectConnectionPool(lambda a: connect(a, security_plan.ssl_context, **config), self.address) File "/Library/Python/2.7/site-packages/neo4j/bolt/connection.py", line 457, in connect raise ServiceUnavailable("Failed to establish connection to {!r}".format(address)) neo4j.exceptions.ServiceUnavailable: Failed to establish connection to ('::1', 7687, 0, 0)
There are two options to resolve this:
-
Either change the
localhost
to127.0.0.1
and then run it with the current settings. As shown below:from neo4j.v1 import GraphDatabase uri = "bolt://127.0.0.1:7687" driver = GraphDatabase.driver(uri, auth=("neo4j", "Password"))
-
Second option is to set the following parameter in
conf/neo4j.conf
file as shown below:dbms.connector.bolt.listen_address=0.0.0.0:7687
We are defining it to connect from any address (i.e.
0.0.0.0
). Restart the database and run the code as:from neo4j.v1 import GraphDatabase uri = "bolt://localhost:7687" driver = GraphDatabase.driver(uri, auth=("neo4j", "Password"))
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