🌵Getting started with Prometheus

is one of the most trending tools used for monitoring of applications hosted on Kubernetes (k8s) , as its better in maintaining and monitoring of multiple servers / applications . Also extending the functionality for "Alerting Mechanism" when working in integration with cloud native platforms like

💬 Pre-requisites

📜 Minikube Installed

📜 Kubectl Installed

🖱 Port 9090 Open

🔌 Installation on Windows

⚡OS : Windows (64-bit)

⚡Package Manager used : Helm

Step 1

        helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
        helm repo update

Step 2

        helm install <Release-name> prometheus-community/prometheus 

Step 3

        kubectl get po
        kubectl get svc

   kubectl expose service prometheus-server --type=NodePort --target-port=9090 --name=prometheus-server-ext
   minikube service prometheus-server-ext

follow the IP that might appear on the screen / navigate to the

IP Address :Port

mentioned.

Business cases where prometheus transformed applications

🖥️ Considering your application consist of multiple microservices , which are interdepenedent on each other , in some case one of your service fails , followed by which you experience multiple service failure in your cluster , without Monitoring tool you cannot get exact insights , or supposedly you won't be able to trace down what went wrong , casuing this issue

🚥🚨 But surely with a monitoring tool like , you will get notified, when a particular service goes down , so you can quickly trace back and fix it , with constact monitoring of metrics .

🧱 Prometheus Architecture

Main Components of Prometheus

🧊 Data Retrival Worker

🧊 Time series Database

🧊 PromQL Queries

🪄 Web UI

🟢 Data Retrival Worker : Is responsible for pulling all the metrics /data from resources like Server , Application

🟢 Time Storage Database : For storing all data that is gathered by Data Retrival Worker

🟢 Prom-QL queries : All the queries that are fired on database (TSW)

🟢 WebUi : For showcasing the results from all datasources like Grafana / etc