When I deployed my JHipster application to Heroku, and connected to a GrapheneDB Neo4J instance (version 3.5.17), the application fails to connect to the Neo4J instance. I tried to reproduce the error locally, thinking it had to do with a version mismatch, as locally the Docker version of Neo4J is 4.0.
However, I localized the error in presence/absence of credentials, with either version of Neo4J.
The working version has this docker-compose.yml file entry:
environment:
- NEO4J_AUTH=none
and this entry in the application.yml:
org:
neo4j:
driver:
uri: bolt://localhost:7687
This version is able to connect. Once I introduce credentials, the entries look like this, docker-compose.yml:
environment:
- NEO4J_AUTH=myapplication/myapplication
and application.yml:
org:
neo4j:
driver:
uri: bolt://localhost:7687
authentication:
username: myapplication
password: myapplication
This version is unable to connect. What is the correct way to set credentials in Spring Boot as well as the neo4j docker image? Is there anything else I am missing?
Connecting to the GrapheneDB instance from my local machine gives the same error, so I suspect that the problem is in the driver configuration. Some search hits mention org.neo4j.driver.username instead of org.neo4j.driver.authentication.username but I tried both and the result is the same.
It turns out I was misled by the Neo4J documentation, which stated that encryption was on by default. All I needed to do was:
org.neo4j.driver.config.encrypted=true
or combined, in YAML:
org:
neo4j:
driver:
uri: bolt://localhost:7687
authentication:
username: myapplication
password: myapplication
config:
encrypted: true
For full configuration, see: https://neo4j.com/developer/driver-spring-boot-starter/