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Centralized Monitoring Service

On a Linux system (this demo leverages Fedora 31, Server spin), we will install and setup Docker, and deploy the containers for Prometheus and Grafana.

Install Docker

All of these commands are found in the setup_f31.sh and setup_proxy.sh scripts in this directory. They are broken out here to explain what is being done in case you are using a different Linux distribution.

Add Docker CE Yum repository:

sudo dnf -y install dnf-plugins-core
sudo dnf config-manager --add-repo \
    https://download.docker.com/linux/fedora/docker-ce.repo

Install Docker packages:

sudo dnf install -y docker-ce docker-ce-cli containerd.io

Change cgroup behavior:

sudo grubby --update-kernel=ALL --args="systemd.unified_cgroup_hierarchy=0"
sudo reboot

If proxy setup required, modify the entries in http-proxy.conf to match your environment and then copy the file to the proper location:

sudo mkdir /etc/systemd/system/docker.service.d
sudo cp http-proxy.conf /etc/systemd/system/docker.service.d

sudo systemctl daemon-reload

Enable and start Docker:

sudo systemctl enable docker
sudo systemctl start docker

Setup Docker Networking

Create the new Docker bridge network demo0 - this provides the nifty feature of docker container name resolution working within each container:

    sudo docker network create --driver=bridge --subnet=192.168.254.0/24 \
                          --gateway=192.168.254.254 --attachable demo0

Deploy Prometheus container

Note: the prometheus.yml configuration is for the author's private lab. You will need to change the job_name entries to point to the switches in your environment.

    sudo docker run --name prometheus -d -p 9999:9090 \
            -v ${PWD}/prometheus.yml:/etc/prometheus/prometheus.yml \
            quay.io/prometheus/prometheus

Deploy Grafana container

    docker run --name grafana -d --network demo0 -p 3000:3000 \
            grafana/grafana

Once Grafana has started, log into the web interface - URL is 'http://server_ip:3000' - with the credentials of admin/admin. Import the grafana JSON file provided in this directory to provision the dashboards seen in the presentation.