Deploying Grafana & Prometheus in K8s

PREFACE: -

Grafana is an open-source, general-purpose dashboard and graph composer, which runs as a web application. Grafana allows you to query, visualize, alert on and understand your metrics no matter where they are stored. Create, explore, and share dashboards with your team and foster a data-driven culture.

Prometheus is an open-source system monitoring and alerting toolkit originally built at SoundCloud. Since its inception in 2012, many companies and organizations have adopted Prometheus, and the project has a very active developer and user community. It is now a standalone open source project and maintained independently of any company.

In this article, we will deploy Grafana & Prometheus to Kubernetes cluster and collected node metrics and connect them. I will use Minikube for deploying Grafana and Prometheus.

Prometheus: -

> Create a Prometheus Deployment.

kubectl create deployment myprom --image=vimal13/prometheus

Here, i used this image which is downloaded from Docker Hub.

> Exposing Prometheus as a Service

kubectl expose deployment myprom --type=NodePort --port=9090

To access the Prometheus dashboard over an IP or a DNS name, you need to expose it as Kubernetes service.

> 192.168.99.100 is my Minikube IP. You should discover yours:

$minikube ip

• But basically Prometheus is not for monitoring,the main feature is to pull data from exporter w.r.t time and store a database which is also known as TSDB.

Grafana: -

> Now let’s deploy Grafana:

kubectl create deployment mygrafana --image=vimal13/grafana

> Exposing Prometheus as a Service:

kubectl expose deployment mygrafana --type=NodePort --port=3000

Now, we have to check our service ports-

kubectl get service

Now we can type our ip:30518 in our browser and access Grafana (default username and password is admin/admin).

And, finally, let’s add a dashboard to Grafana using metrics from Prometheus.

So, here we have some different Visualizations of certain PromQuery we put.

• Grafana is designed for analyzing and visualizing metrics such as system CPU, memory, disk and I/O utilization. Grafana does not allow full-text data querying.
• Learn about the Grafana , it is great for visualization as human beings understand more using visual.

This helps monitoring more simple.

Prometheus records real-time metrics in a time series database and Grafana helps in analyzing and visualizing metrics in customizable and presentable dashboards.

We deploy 90% of the tools on k8s in today's world, so this great use case.

Thank you for reading!