K8s on Sagar Panda | DevOps & Cloud Infra Engineer

Kubernetes Health Checks with Probes

Mon, 11 Nov 2024 19:26:10 +0530

What are probes

The word “probe” in a general sense means a detailed investigation or inspection to gather information or check the condition of something. It’s often used in contexts where you’re trying to assess the status or health of something.

Kubernetes Security — Role Based Access Control (RBAC)

Mon, 20 May 2024 19:26:10 +0530

Introduction

Role-Based Access Control (RBAC) is a method used in computer security to manage access to resources within a system.

RBAC in k8s is based on the principle. There are various terminologies such as users, service account, role, role binding and etc.

Helm — Your Compass in the Kubernetes Universe

Wed, 01 May 2024 19:26:10 +0530

What is Helm:

Helm, the package manager for k8s similar to package manager for linux such as apt (Debian/Ubuntu based) yum/dnf (Red Hat or Fedora family of linux) , which helps us with packaging and deploying application.

Calico and Kubernetes: A Perfect Pair for Robust Network Policy

Mon, 22 Jan 2024 19:26:10 +0530

Before we begin:

Make sure to have calico as the network provider for the k8s cluster.

Introduction:

By default k8s allows all pods to communicate with each other in a cluster across namespaces.

Delving into the World of Deployments in Kubernetes

Sat, 24 Jun 2023 19:26:10 +0530

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 shell alias for kubectl

 
 

 

 YAML
 

 
 
 
apiVersion: apps/v1
kind: Deployment
metadata:
 name: mywebapp
 annotations:
 kubernetes.io/change-cause: "initial deployment"
spec:
 replicas: 3
 selector:
 matchLabels:
 app: data
 template:
 metadata:
 labels:
 app: data
 spec:
 containers:
 - name: prodapp
 image: quay.io/gauravkumar9130/production:v1
apiVersion: apps/v1
kind: Deployment
metadata:
 name: mywebapp
 annotations:
 kubernetes.io/change-cause: "initial deployment"
spec:
 replicas: 3
 selector:
 matchLabels:
 app: data
 template:
 metadata:
 labels:
 app: data
 spec:
 containers:
 - name: prodapp
 image: quay.io/gauravkumar9130/production:v1

 
 

Apply the deployment and expose the service with the load balancer type. (using the cmd line, for now, will merge later).

Container Orchestration: Kubernetes 101

Thu, 22 Jun 2023 19:26:10 +0530

Introduction:

Kubernetes , also known as K8s, is an open-source platform to automate deployment, scaling, and management of containerized applications or containers.