InfluxDB datasource in Docker network - what URL?

Grafana
1

UPDATE: Stupid, stupid mistake. I had set server (the name in the interface), not proxy as the value of access in datasources.yaml. The good news is: it works perfectly now :slight_smile:

My goal is to connect Grafana to Influx DB in a Docker network kwenv_default. The InfluxDB has container name and port kwenv_influxdb_1:8086. Iā€™ve verified that it is accessible on the network at that name by writing to it from a node-red container.

PROBLEM: In Datasource, I cannot connect Grafana to InfluxDB via kwenv_influxdb_1:8086. ā€œSave & Testā€ reports that the data source is working in Server access mode for that address. But dashboards display no data and a red exclamation mark. The Query Inspector returns ā€˜If youā€™re seeing this Grafana has failed to load its application filesā€™.

I can connect by exposing InfluxDBā€™s ports to the host and hardcoding the host machine IP in Grafanaā€™s datasource URL. But I donā€™t want InfluxDB accessible from the host, and I donā€™t want to have to configure the URL manually every install.

Can you advise why Grafana is unable to load its application files using a Docker container name and network, and how to configure it to do so?

docker-compose

version: '3.7'

services:
    influxdb:
        image: influxdb:1.7-alpine
        ports:
            - 8086:8086
        environment:
            - INFLUXDB_HTTP_AUTH_ENABLED=${INFLUXDB_HTTP_AUTH_ENABLED}
            - INFLUXDB_ADMIN_USER=${INFLUXDB_ADMIN_USER}
            - INFLUXDB_ADMIN_PASSWORD=${INFLUXDB_ADMIN_PASSWORD}
            - INFLUXDB_DB=${INFLUXDB_DB}
            - INFLUXDB_USER=${INFLUXDB_USER}
            - INFLUXDB_PASSWORD=${INFLUXDB_PASSWORD}
        volumes:
            - ./influxdb/:/var/lib/influxdb
            - ./influxdb/influxdb.config:/etc/influxdb/influxdb.conf:ro

    grafana:
        image: grafana/grafana:latest
        depends_on:
            - influxdb
        ports:
            - 3000:3000
        environment:
            - GF_SECURITY_ADMIN_USER=${GF_SECURITY_ADMIN_USER}
            - GF_SECURITY_ADMIN_PASSWORD=${GF_SECURITY_ADMIN_PASSWORD}

        volumes:
            - ./grafana:/var/lib/grafana
            - ./grafana/provisioning:/etc/grafana/provisioning

datasources.yaml

apiVersion: 1

datasources:
-   name: InfluxDB
    type: influxdb
    access: server
    url: kwenv_influxdb_1:8086
    isDefault: true
    basicAuth: true
    basicAuthPassword: true
    basicAuthUser: admin
    secureJsonData:
        basicAuthPassword: [REDACTED]
    database: nodered_db
    editable: true

Thank you.