Configuration on Docker Host

Install jq (example for debian/Ubuntu)

apt install jq

Configure Script

Paste content from DockerStats4PRTG.sh to your host or clone this repo

nano ./DockerStats4PRTG.sh

Customize CONTAINERS and OUTPUT_File variable fpr example:

CONTAINERS="nginx-docker-prtg container1"
OUTPUT_FILE="/PATH/TO/DOCKERDATA/DockerStats4PRTG.json"

Run the script (on the first run, an error message is displayed because the file size cannot be measured)

./DockerStats4PRTG.sh

Add script to crontab

crontab -e

Add following line for check every 5minutes

*/5 * * * * $HOME/DockerStats4PRTG.sh > /dev/null

Simple Nginx Server

Paste content from default.conf to your host or clone this repo

nano /PATH/TO/DOCKERDATA/default.conf

Create and start Docker

docker run -d \
    --name nginx-docker-prtg \
    --restart=unless-stopped \
    -p 80:80 \
    -e USER_UID=1000 \
    -e USER_GID=1000 \
    -e TZ="Europe/Berlin" \
    -v /PATH/TO/DOCKERDATA/default.conf:/config/nginx/site-confs/default.conf:ro \
    -v /PATH/TO/DOCKERDATA/DockerStats4PRTG.json:/config/www/DockerStats4PRTG.json:ro \
    linuxserver/nginx:latest

Configuration on PRTG WebUI

• Add sensor
• HTTP Data Advanced
• Name = Docker Stats
• URL = http://YOURNGINXSERVER/DockerStats4PRTG.json

Useful links

PRTG custom sensors
PRTG HTTP Data Advanced
Linuxserver Docker Nginx