influx-telegraf-compose

compose_init.sh

#!/bin/bash
# extract buckets from conf file
parent_path=$( cd "$(dirname "${BASH_SOURCE[0]}")" || exit ; pwd -P )
conf_path="$parent_path"/outputs.conf

BUCKETS=$(grep -o -P '(?<=bucket \= ").*(?=")' "$conf_path")
export BUCKETS

docker-compose.yml

services:
  influxdb:
    image: influxdb:latest
    ports:
      - "8086:8086"
    networks:
      - influx-network      
    volumes:
      - db-data:/var/lib/influxdb2
      - ./scripts/influx:/docker-entrypoint-initdb.d
    environment:
      - DOCKER_INFLUXDB_INIT_MODE=setup
      - DOCKER_INFLUXDB_INIT_USERNAME=admin
      - DOCKER_INFLUXDB_INIT_PASSWORD=$PASSWORD
      - DOCKER_INFLUXDB_INIT_ORG=demo
      - DOCKER_INFLUXDB_INIT_BUCKET=demo
      - DOCKER_INFLUXDB_INIT_ADMIN_TOKEN=$TOKEN
      - BUCKETS
  telegraf:
    image: "telegraf"
    volumes:
      - "./outputs.conf:/config/telegraf.d/outputs.conf"
    networks:
      - influx-network
    depends_on:
      - influxdb
    environment:
      - INFLUX_TOKEN=$TOKEN
      - INFLUX_PORT=8086
      - INFLUX_HOST=influxdb
    command: telegraf --config-directory /config/telegraf.d
networks:
  influx-network:

volumes:
  db-data:

init.sh

# /scripts/influx/init.sh
#!/bin/bash
set -e

mapfile -t buckets < <(echo "$BUCKETS")

for i in "${!buckets[@]}"
do
    echo "$i" Creating bucket: "${buckets[$i]}"
    influx bucket create -n "${buckets[$i]}"
done

outputs.conf

[[outputs.influxdb_v2]]
    urls = ["http://$INFLUX_HOST:8086"]
    token = "$INFLUX_TOKEN"
    organization = "demo"
    namepass = ["applog"]
    bucket = "applog"

[[outputs.influxdb_v2]]
    urls = ["http://$INFLUX_HOST:8086"]
    token = "$INFLUX_TOKEN"    
    organization = "demo"
    namepass = ["cpu", "disk", "mem", "system"]
    bucket = "metrics"