README.md

grafana-prometheus-cadvisor-Tutorial

https://krishkp.hashnode.dev/monitoring-in-prometheus-and-grafana-docker-dashboard-cadvisor

this is a documentation of how to setup prometheus , grafana via cadvisor in linux.

Install Grafana on Debian or Ubuntu

sudo apt-get install -y apt-transport-https sudo apt-get install -y software-properties-common wget sudo wget -q -O /usr/share/keyrings/grafana.key https://apt.grafana.com/gpg.key

Stable release echo "deb [signed-by=/usr/share/keyrings/grafana.key] https://apt.grafana.com stable main" | sudo tee -a /etc/apt/sources.list.d/grafana.list

Update the list of available packages

sudo apt-get update

Install the latest OSS release:

sudo apt-get install grafana

To start Grafana Server

sudo /bin/systemctl status grafana-server

sudo systemctl start grafana-server

sudo systemctl enable grafana-server

Install Prometheus and cAdvisor

cAdvisor (short for container Advisor) analyzes and exposes resource usage and performance data from running containers. cAdvisor exposes Prometheus metrics out of the box.

Download the prometheus config file

wget https://raw.githubusercontent.com/prometheus/prometheus/main/documentation/examples/prometheus.yml

after this, a prometheus.yml file will be added in the directory. this is prometheus config file where we have to add the other scrap configurations. like # Add cAdvisor target

scrape_configs:
- job_name: cadvisor
  scrape_interval: 5s
  static_configs:
  - targets:
    - cadvisor:8080

Install Prometheus using Docker

docker run -d --name=prometheus -p 9090:9090 -v <PATH_TO_prometheus.yml_FILE>:/etc/prometheus/prometheus.yml prom/prometheus --config.file=/etc/prometheus/prometheus.yml

Using Docker Compose

version: '3.2'
services:
  prometheus:
    image: prom/prometheus:latest
    container_name: prometheus
    ports:
    - 9090:9090
    command:
    - --config.file=/etc/prometheus/prometheus.yml
    volumes:
    - ./prometheus.yml:/etc/prometheus/prometheus.yml:ro
    depends_on:
    - cadvisor
  cadvisor:
    image: gcr.io/cadvisor/cadvisor:latest
    container_name: cadvisor
    ports:
    - 8080:8080
    volumes:
    - /:/rootfs:ro
    - /var/run:/var/run:rw
    - /sys:/sys:ro
    - /var/lib/docker/:/var/lib/docker:ro
    depends_on:
    - redis
  redis:
    image: redis:latest
    container_name: redis
    ports:
    - 6379:6379

#  Verify

docker-compose up -d
docker-compose ps

# Test PromQL
rate(container_cpu_usage_seconds_total{name="redis"}[1m])
container_memory_usage_bytes{name="redis"}