Setup SSL certificate for free. Secure your application with Let’s Encrypt. — What is SSL/TLS: SSL or Secure Sockets Layer is a security protocol used to establish an encrypted connection between your web browser and a web server. This ensures that the data transfer between you and the server can’t be read by an intruder. The padlock icon you see on a URL, that’s what…

Configure Blackbox Exporter to View Site details in Grafana, get alerts for TLS expiration and other details. — In the previous post we discussed sending email alerts with alertmanager, in this post we’ll configure the Prometheus Blackbox Exporter. You can find the repository on Github. BlackBox exporter is a monitoring tool that allows querying of endpoints over HTTP, HTTPS, DNS, etc. Here we are going to monitor http://prometheus.io…

Part IV — Setup terraform to store state file on AWS S3 bucket with DynamoDB lock. — In the previous post we understood what the state file is and its importance. Considering the use of TF in an organisation where multiple members of a project might work on and modify the same resource, its essential that the same .tfstate file is available to everyone. However keeping it…

GitHub Actions is a modern CI/CD alternative to Jenkins. — Intro: GitHub action is a CI/CD platform to create build, test and deployment pipeline for our application. This is a yaml based configuration. In this tutorial, we are going to see the basics of github action and then proceed to integrate SonarQube SAST with it in the next post. Prerequisite: …

Get mail alerts from Prometheus about server resource usage. — This is the 2nd article, to setup Prometheus with Node exporter and Grafana refer below article. You can find the repository on Github. Setup Monitoring — Prometheus and Grafana. The Prometheus Alertmanager is a tool for sending alerts via emails, slack and various other mediums. In this article we’ll configure it to send Server Status alerts…

Monitoring Linux Server with Prometheus Node exporter. Setup using docker. — Introduction: Prometheus is a open-source platform for monitoring hardware and services. It collects metrics from the system of any other services that we configured. It has a querying language called PromQL to analyse the metrics. We can also configure mail alerts for situation like hight resources usage, SSL expiration etc.

Part IV— Deployment using YAML, Strategies and Rollback. — In the previous article, we saw ReplicaSet, Services and touched base on deployment. In this article, we will explore deployments in more detail. As we already created deployments using the cmd line, here we’ll use yaml. We’ll combine replicaset and service config with the deployment config. Note: kctl is an…

Chapter III — The terraform.tfstate file stores the status and is crucial for the management of the resources. — In previous posts we saw how to create config, basic commands and splitting the config to multiple files. In this article, we’ll have a in-depth analysis of the terraform.tfstate file. So first we’ll create a config with one IAM user and a S3 bucket. provider "aws" { region =…

Chapter II —Generating Output, using Variables and Refactoring the Script into different files. — In the previous article, we setup tf and got familiar with it with basic example. Now lets proceed further. All configs can be found on GitHub. Displaying Output in TF: For every action we create we can generate output also to be shown on the terminal. To do so we need to add output…