InfluxDB
https://docs.influxdata.com/influxdb/v1.8/administration/authentication_and_authorization/
Flux
https://docs.influxdata.com/flux/v0.x/get-started/
Queries
SQL
CREATE USER polyU_HK WITH PASSWORD '***'
GRANT READ ON "telegraf" TO "***"
SHOW DATABASES
USE database
SHOW measurements
SELECT * FROM measurements
create retention policy "rp_f26" on "telegraf" duration 3w replication 1 default
drop retention policy "auto_gen"
Query the latest record only.
SELECT LAST("tag_value") FROM "kafka_consumer" WHERE ("host"='f26dht') AND ("tag_code"='v5678')
docker compose influxdb and telegraf
services:
telegraf:
image: telegraf:latest
volumes:
- ./telegraf/etc/telegraf.conf:/etc/telegraf/telegraf.conf:ro
depends_on:
- influxdb
links:
- influxdb
networks:
- dtlab
ports:
- '8125:8125'
influxdb:
image: influxdb:latest
container_name: influxdb
restart: always
environment:
- INFLUXDB_DB=cadslab
- INFLUXDB_ADMIN_USER=cadslab
- INFLUXDB_ADMIN_PASSWORD=cadslab
networks:
- dtlab
ports:
- '8086:8086'
volumes:
- influxdb_data:/var/lib/influxdb
# telegraf:
# image: telegraf:latest
# volumes:
# - ./telegraf/etc/telegraf.conf:/etc/telegraf/telegraf.conf:ro
# depends_on:
# - postgres
# links:
# - postgres
# networks:
# - dtlab
# ports:
# - '8125:8125'
# postgres:
# image: postgres:latest
# restart: always
# ports:
# - '5432:5432'
# environment:
# POSTGRES_PASSWORD: postgres
# POSTGRES_USER: postgres
# POSTGRES_DB: postgres
# networks:
# - dtlab
# volumes:
# - postgres_storage:/var/lib/postgresql/data
networks:
dtlab:
driver: bridge
volumes:
influxdb_data: {}
postgres_storage: {}
Mannual backup and restore
# Let's get into the container
docker exec -it addon_a0d7b954_influxdb bash
# We create a temporary backup directory
mkdir -p /share/backup/influxdb/
# Create the backup to our new share directory
influxd backup -database homeassistant -portable /share/backup/influxdb/
# Exit the container
exit
# (Optional) Set so all users can read the backup data
sudo chmod a+r /usr/share/hassio/share/backup/influxdb/*
# (Optional) Afterwards remove the backup
sudo rm -rf /usr/share/hassio/share/backup/influxdb/*