DevOps Project : Monitoring-grafana-blackbox

• Purpose: In this project we will setup the Grafana-blackbox locally using Docker Compose. And we"ll configure some URLs to monitor them on the Grafana dashbpard.
• Prerequisites:

1. OS: Ubuntu
2. Docker
3. GitHub

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Lets understand the basics of Grafana

• In today's world of DevOps and CloudComputing, Grafana has emerged as a go-to tool for monitoring and observability. Whether you're tracking server performance, application logs, or business metrics, Grafana makes it easy to create beautiful, real-time dashboards that provide actionable insights.

Here’s why Grafana should be in your toolkit:

1. 📊 Customizable Dashboards - Tailor your views to what matters most.
2. 🔗 Integrations Galore - From Prometheus to InfluxDB, it integrates with numerous data sources.
3. 🔍 Powerful Alerts - Stay ahead of issues with Grafana’s alerting system.
4. 🚀 Scalability - Suitable for startups to enterprise-level infrastructures.

Ready to supercharge your monitoring and observability game? Try out Grafana and see the difference it makes!

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Grafans installation:

1. Run the following command.
   • Firstly we cloned the repository frm the GitHub.

   git clone https://github.com/cmjagtap/Website-Monitoring.git
   

   • Then we will see inside the repo and enter in the "Website-Monitoring" directory and from there we"ll go inside "blackbox_exporter-0.18.0.linux-amd64".

• Now run the command inside

./blackbox_exporter --config.file=blackbox.yml &> output.log &

• Now we checked the port status with the following command and got that Port 9115 is open for blackbox.

  ss -tulnp
  

• Check the IP and hit on the browser with port 9115

  ip a
  

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• Now make up all the containers by running the command.

docker-compose up -d

• Open the url of Prometheus with (your system) IP and Port.

• Use "admin" as user and the password for login.

• Configure the data source which is Prometheus.

• Import a new dashboard. Use Dashboard id 13659

• Now let's check the URLs added for monitoring in the "prometheus.yml" file.

vim promethereus.yml

• If we need to add more URL in the list to moniter then we have to add the domain name in the same file under "tragets" section. For example I'm adding a new URL.

• After adding the new URL, save the file and restart the prometheus container.

docker-compose restart prometheus

• Now refresh the Grafana dashboard page and the new URL will reflect in the list as shown in the snapshot.

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System Monitoring

• In this task we will configure our system for montoring using the same tool : Grafana, Prometheus and we will use Node Exportere instead of Blackbox Exportere (as we used in the application onitoring)

• Download Node Exporter

wget https://github.com/prometheus/node_exporter/releases/download/v1.6.1/node_exporter-1.6.1.linux-amd64.tar.gz
tar xvfz node_exporter-1.6.1.linux-amd64.tar.gz
cd node_exporter-1.6.1.linux-amd64
./node_exporter &

• Check the default port of Node explorer which is 9100

ss -tulnp

• These are the other snapshots of different testing machine.

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Error and trouble shooting

• After updating the prometheus.yml file, I got the error of connection refused and showing no data on the Dashboard.