DevOps Hunter Security Automation

Greetings of the day, dear Cloud Native enthusiasts! Imagine you are managing a Kubernetes cluster with 50 worker nodes and hundreds of microservices. Your applications are running successfully, but your operations team has several questions: Who collects CPU, memory, disk, and network metrics from every worker node? How do you collect container logs from all nodes? How do you deploy a security monitoring agent consistently across the cluster? When a new worker node joins the cluster, how do you ensure that the monitoring agent is installed automatically? What happens when a worker node is replaced during an infrastructure upgrade? You could manually deploy an agent on every node, but that approach quickly becomes difficult to maintain. This is exactly where Kubernetes DaemonSet becomes important. A DaemonSet automates the deployment of node-level services by ensuring that a copy of a specified Pod runs on every eligible node or a selected subset of nodes. ...

Hello DevOps Engineers, DevSecOps Professionals, SREs, Platform Engineers, and Kubernetes Enthusiasts! As Kubernetes adoption grows, managing large numbers of YAML manifests becomes increasingly difficult. A typical application deployment may require multiple Kubernetes objects such as: Deployments Services ConfigMaps Secrets Ingress Resources Horizontal Pod Autoscalers (HPA) Service Accounts Managing all these resources individually can quickly become complex and error-prone. This is where Helm comes into the picture. Helm is the most widely used package manager for Kubernetes and is often referred to as the "apt" or "yum" of Kubernetes." In this blog post, we'll learn & explore: What Helm is Why Helm is important How Helm Charts work Installing Helm on Linux Creating and validating Helm Charts Deploying applications using Helm Customizing deployments with values files Best practices for production environments What is a helm chart?  Helm is a package...

We have seen the word 'replicas' in the Docker Swarm services definition time. How to work with ReplicaSet?   What does ReplicaSet do? ReplicaSet will define the group of pods. You can tell how many replicas of pods for your application. The template section will define how many pods and their specification will be defined. Defining ReplicaSet allows you to deploy podand keep it alive as per configuration. How to create ReplicaSet? ReplicaSet relationship with Pod apiVersion: apps/v1 kind: ReplicaSet metadata: name: my-tcat-rs labels: version: "3.0" spec: replicas: 2 selector: matchLabels: project: MyWeb role: frontend template: metadata: labels: project: MyWeb role: frontend env: dev spec: conta...