OdenData

Prometheus

by Mark Nielsen
Copyright Dec 2022

The purpose of this doc is just to get Prometheus installed and monitoring mysql and apache and maybe something else.

---

1. Links
2. Install Prometheus
3. Configure

Links

• https://prometheus.io/docs/prometheus/latest/installation/
• https://scalegrid.io/blog/how-to-monitor-mysql-deployments-with-prometheus-and-grafana-at-scalegrid/
• https://geekflare.com/prometheus-grafana-setup-for-linux/

---

Install Prometheus

First of all you need docker running. The easiest is to use a Docker Image.

  curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
    ## NOTE: I am running Linux Mint, so I have to manually put in the equiv ubuntu lsb release
  echo   "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
    focal stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
  apt-get update
  apt-get install docker-ce docker-ce-cli containerd.io

  docker run hello-world

  docker ps -a
  docker rm competent_davinci
  
  docker images
  docker rmi hello-world

Now we install Prometheus

• docker run -p 9090:9090 prom/prometheus
• Goto the web browser at your ip address are port 9090 like : http://192.168.1.100:9090
• Now you want to create your own prometheus configuration file and mount it from your host

        
        mkdir  /etc/prometheus/
        touch /etc/prometheus/prometheus.yml
        docker stop nostalgic_mcnulty
  
          # Your prometheus file might be in a different place. 
        cp /var/lib/docker/overlay2/8a3ad98dedf35668a02389f2fcdb2e56cb1f5098d75d5123eb45147612b3b6b6/diff/etc/prometheus/prometheus.yml /etc/prometheus/prometheus.yml
        docker create -it -p 9090:9090 -v /tmp/root:/tmp/root --name my_prometheus  -v /etc/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml prom/prometheus
        docker start my_prometheus
      

• Go to the host server and port 9090: http://192.168.1.100:9090

On the host computer:

  mkdir /root/p
  cd /root/p
  wget https://github.com/prometheus/node_exporter/releases/download/v*/node_exporter-*.*-amd64.tar.gz

  docker exec -it my_prometheus sh


  /bin/prometheus -h
  

---

Configure

---