I have a python script that I dockerized, inside the script i make a call to ArangoDB. I have another container running an ArangoDB image. When i run both containers, I'm able to access ArangoDB on my localhost and if I run my python script from outside its container it can call ArangoDB successfully. However when i run the script from inside a docker container, it fails to connect to the containerized ArangoDB because it does not identify that there is a server up and running, i get the following error:
File "/usr/local/lib/python3.7/site-packages/arango/client.py", line 167, in db
raise ServerConnectionError('bad connection: {}'.format(err))
arango.exceptions.ServerConnectionError: bad connection: HTTPConnectionPool(host='127.0.0.1', port=8529): Max retries exceeded with url: /_db/dox/_api/collection (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f17a4db3450>: Failed to establish a new connection: [Errno
111] Connection refused'))
Here is my dockerfile for the python script
FROM python:3.7-buster
WORKDIR /usr/src/app
COPY requirements.txt ./
RUN pip install -r requirements.txt
COPY . .
CMD [ "python", "main.py" ]
And this is where i call ArangoDB from my python script:
class ArangoDB():
def __init__(self, db, username, password):
"""
Creates an ArangoDB session and connects to a specified Arango database.
Parameters
----------
db : str
Arango database name
username : str
Arango database username
password : str
Arango database password
Returns
-------
An instance of ArangoDB API Wrapper
"""
logger.info(f'User {username} Connecting to database: {db}')
self._conn = ArangoClient()
self._db = self._conn.db(name=db, username=username, password=password,verify=True)
logger.info(f"Successfully connected to database: {db}")
Finally, this is my docker-compose.yml
version: "3.8"
services:
arangodb:
image: arangodb:latest
container_name: db
environment:
ARANGO_ROOT_PASSWORD: route66
ports:
- "8529:8529"
volumes:
- arangodb_data:/var/lib/arangodb3
- arangodb_apps_data:/var/lib/arangodb3-apps
python:
build: .
depends_on:
- arangodb
ports:
- "5000:5000"
container_name: myapp
networks:
default:
external:
name: back
volumes:
arangodb_data:
arangodb_apps_data:
