DevOps - DevOps Blog (Page 3)

DevOps

A collection of 160 posts

How to Write Bash Scripts to Loop Through Array Values

How to Write Bash Scripts to Loop Through Array Values

Looping through array values is a common task in Bash scripting. For instance, you might want to loop through an array of filenames and execute specific commands on each one. In this blog post, you’ll learn how to write bash scripts that utilize for loops to iterate through array

How to Build a Docker Image With Dockerfile From Scratch

How to Build a Docker Image With Dockerfile From Scratch

Containers have become the preferred method for packaging and deploying applications in modern software development. Among container platforms, Docker has emerged as the most popular choice for building and managing these containers. Before we can run an application as a container using Docker, we must first build a Docker image.

SRE vs Devops: Understanding The Key Differences

SRE vs. DevOps: Understanding The Key Differences

If you are interested in software development and IT operations, you may have heard of two popular terms: SRE and DevOps. But what do they mean, and how do they differ? Key Takeaway * SRE and DevOps are two approaches that aim to improve the reliability and speed of software development

How to Pass Environment Variables to Docker Containers?

How to Pass Environment Variables to Docker Containers?

Containerized applications can run seamlessly across a variety of environments, including development, testing, and production. As these applications move from one environment to another, they often require some configurations to be adjusted to meet each environment's unique needs. For example, in a development environment, enabling verbose debugging can

How to Restart a Pod in Kubernetes

How to Restart a Pod in Kubernetes

Restarting a Pod is a common operation in Kubernetes. There are several reasons why you might want to restart a Pod. For example, you might want to update the container image to a newer version or modify the environment variables to adjust how your application works. In this blog post,

Docker-Compose Logs: How to View Log Output?

Docker-Compose Logs: How to View Log Output?

As you deploy containerized applications using Docker, you may occasionally encounter issues that prevent your applications from running as expected. This is where effective troubleshooting becomes essential, and logs serve as your best tool for this purpose. Logs are detailed records of the events that occur within an application. They

Kubectl Rollout Restart: What Is It and How to Use It?

Kubectl Rollout Restart: What Is It and How to Use It?

In Kubernetes, kubectl rollout restart is a command used to start a new rollout process for three specific Kubernetes objects: Deployment, DaemonSet, and StatefulSet. A rollout process essentially means a gradual, step-by-step recreation of Pods — The old Pods are not removed entirely until the new Pods are running successfully. This

How to Debug CrashLoopBackOff in a Container or Pod

How to Debug CrashLoopBackOff in a Container or Pod

When trying to get your containerized application up and running in a Kubernetes cluster, you may run into errors that prevent the application from running. One such error is CrashLoopBackOff. In this blog post, we’ll learn how to debug the CrashLoopBackOff status of a Pod. Our approach? We’ll

kubectl logs: How to Get Pod Logs in Kubernetes (With Examples)?

Kubernetes Logs

kubectl logs: How to Get Pod Logs in Kubernetes (With Examples)

Kubernetes is a container orchestration tool used to deploy and manage containerized applications. Like any software, these applications can sometimes fail or not perform as expected due to various reasons. When such failures occur, it’s important to identify and rectify the issue quickly. One key aspect of troubleshooting involves

How to Use Docker CP Command With Examples?

How to Use Docker CP Command With Examples

In Docker, the docker cp command is a powerful tool that provides a way to copy data in and out of a container. This makes it useful for performing tasks such as debugging and data backup. In this blog post, we'll explore how to use the docker cp

GitHub Copilot: Revolutionizing Code Generation with AI-Powered Assistance

GitHub Copilot is a groundbreaking coding assistant that has been making waves in the development community. Powered by advanced artificial intelligence (AI) models and developed by GitHub, Copilot aims to transform the way we write code. In this comprehensive blog, we will explore the inner workings of GitHub Copilot, its

Why and How to Tag a Docker Image?

Docker Image Tag

Why and How to Tag a Docker Image?

Learning to properly tag Docker images in a production environment is crucial. Meaningful and consistent image tags not only help users easily identify and select the appropriate image versions for their needs but also enhance clarity and streamline workflows within the team. In this blog post, we’ll learn why

Docker Entrypoint vs CMD: What Is the Difference and How to Choose?

Docker Entrypoint vs. CMD: What Is the Difference and How to Choose?

Docker is a platform that lets us run and manage applications inside containers. Before we can run an application inside a container, we must create a Docker image of the application using Dockerfiles. A Dockerfile is a text file containing instructions that Docker executes to create the image. Each instruction

kubectl cp: How to Copy File From Pod to Local (With Examples)?

kubectl cp: How to Copy File From Pod to Local (With Examples)

The kubectl cp command is a powerful tool in Kubernetes that you can use to copy files between the local system and a Pod. There are various use cases of this command, including: * Debugging: You can use kubectl cp to copy log files from a Pod. In case the Pod

Infrastructure-as-Code

What is Infrastructure-as-Code (IaC)?

Infrastructure as Code (IaC) is a concept that has revolutionized the way IT infrastructure is managed and deployed. By using IaC, infrastructure is treated like a software application where its attributes are written through code. In this article, we will discuss IaC, what it is, and how it can help

ChatGPT and DevOps: A Match Made in the Cloud

ChatGPT and DevOps: A Match Made in the Cloud

DevOps has transformed the software development landscape by enabling organizations to deliver software products faster and more efficiently. The integration of artificial intelligence (AI) in DevOps is further enhancing this transformation. One AI tool that is popular with DevOps professionals is ChatGPT, a powerful language model. In this blog, we

How to Remove Unused and Dangling Docker Images?

How to Remove Unused and Dangling Docker Images

A Docker image is a static file that contains everything needed to run an application, including the application code, libraries, dependencies, and the runtime environment. In this blog post, we’ll learn how to remove unused and dangling Docker images. But first, let’s understand what they are. What Is

How to Create Docker Image From a Container?

How to Create Docker Image From a Container

Docker is a platform that helps run applications inside containers. One of its powerful features is that you can create custom Docker images from containers. Now, you might be wondering, why bother creating an image from a container when you can just use Dockerfiles? One important reason is when you

Differences Between Put and Patch in Rest API & When to Use Them?

Differences Between Put and Patch in Rest API & When to Use Them

In this blog post, we’ll learn about the differences between PUT & PATCH and when to use each method. But before we do so, let’s take a step back and understand some important concepts such as HTTP, HTTP methods, and RESTful APIs. What is HTTP? HTTP stands for

KodeKloud's Free Week

Unlock Your Full Potential with KodeKloud's Free Week: A Comprehensive Guide

Exciting news for all the DevOps enthusiasts out there! KodeKloud’s highly popular Free Week is back, offering everything in the standard plan for free - for an entire week. This includes access to all 50+ premium courses and 400+ hands-on labs, allowing you to explore the most in-demand skills

How to Get Docker Container IP Address From the Host?

How to Get Docker Container IP Address From the Host

In this blog post, we’ll explore various methods for finding the IP address of a Docker container that was started with the default container networking. When we say that a container was started with the default container networking, it means that the container is using the built-in Docker networking

How to Use Kubectl Delete Deployment (With Examples)?

How to Use Kubectl Delete Deployment (With Examples)

Kubernetes is a popular container orchestration tool used to deploy and manage containerized applications at scale. In Kubernetes, a Deployment describes a deployed application. It is a higher-level abstraction that manages an application’s desired state, such as the number of replicas (copies), the container image to use for the

Kubectl Create Namespace: How to Create a Custom Namespace?

Kubectl Create Namespace: How to Create a Custom Namespace?

In this blog post, we'll learn how to create a custom Namespace in Kubernetes using the "kubectl create namespace" command. But before we do so, let's take a step back and understand what a Namespace is and why it's useful. What Is

Kubectl Exec: How to Execute Shell Commands Into a Container (With Examples)?

Kubectl Exec: How to Execute Shell Commands Into a Container (With Examples)?

Kubernetes is a powerful container orchestration platform for easily deploying and managing containerized applications. However, managing containerized applications is about more than just getting them up and running. Sometimes, you’ll need to interact with the containers to perform important tasks, such as debugging issues or modifying files or directories.