3.5 KiB
InfluxDB writer
InfluxDB writer provides message repository implementation for InfluxDB.
Configuration
The service is configured using the environment variables presented in the following table. Note that any unset variables will be replaced with their default values.
| Variable | Description | Default |
|---|---|---|
| MF_NATS_URL | NATS instance URL | nats://localhost:4222 |
| MF_INFLUX_WRITER_LOG_LEVEL | Log level for InfluxDB writer (debug, info, warn, error) | error |
| MF_INFLUX_WRITER_PORT | Service HTTP port | 8180 |
| MF_INFLUX_WRITER_DB_HOST | InfluxDB host | localhost |
| MF_INFLUXDB_PORT | Default port of InfluxDB database | 8086 |
| MF_INFLUXDB_ADMIN_USER | Default user of InfluxDB database | mainflux |
| MF_INFLUXDB_ADMIN_PASSWORD | Default password of InfluxDB user | mainflux |
| MF_INFLUXDB_DB | InfluxDB database name | mainflux |
| MF_INFLUX_WRITER_CONFIG_PATH | Config file path with NATS subjects list, payload type and content-type | /configs.toml |
Deployment
The service itself is distributed as Docker container. Check the influxdb-writer service section in docker-compose to see how service is deployed.
To start the service, execute the following shell script:
# download the latest version of the service
git clone https://github.com/mainflux/mainflux
cd mainflux
# compile the influxdb
make influxdb
# copy binary to bin
make install
# Set the environment variables and run the service
MF_NATS_URL=[NATS instance URL] \
MF_INFLUX_WRITER_LOG_LEVEL=[Influx writer log level] \
MF_INFLUX_WRITER_PORT=[Service HTTP port] \
MF_INFLUXDB_DB=[InfluxDB database name] \
MF_INFLUX_WRITER_DB_HOST=[InfluxDB database host] \
MF_INFLUXDB_PORT=[InfluxDB database port] \
MF_INFLUXDB_ADMIN_USER=[InfluxDB admin user] \
MF_INFLUXDB_ADMIN_PASSWORD=[InfluxDB admin password] \
MF_INFLUX_WRITER_CONFIG_PATH=[Config file path with NATS subjects list, payload type and content-type] \
$GOBIN/mainflux-influxdb
Using docker-compose
This service can be deployed using docker containers.
Docker compose file is available in <project_root>/docker/addons/influxdb-writer/docker-compose.yml. Besides database
and writer service, it contains Grafana platform which can be used for database
exploration and data visualization and analytics. In order to run Mainflux InfluxDB writer, execute the following command:
docker-compose -f docker/addons/influxdb-writer/docker-compose.yml up -d
Please note that you need to start core services before the additional ones.
Usage
Starting service will start consuming normalized messages in SenML format.