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Basic Linux Commands

BASIC LINUX COMMANDS Now to understand about the basic linux commands, first you need to know what Linux is all About!! WHAT IS LINUX? When using Windows — its high degree of compatibility is fine for every day use for many people. Since Windows is a proprietary operating system, developers and user more or less …

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Security Features In Red Hat Enterprise Linux 9

  Redhat Enterprise Linux 9 New capabilities added to RHEL 9 help simplify how organizations manage security and compliance when deploying new systems or managing existing infrastructure. SSH root password login disabled by default – OpenSSL 3.0.1 – Improved system-wide crypto-policies  

Redhat Openshift 4.10

WHAT’S NEW IN OPENSHIFT 4.10 New Updates Openshift Sandboxed Containers New Compliance Profiles Additional Infrastructure Providers and ARM Streamlined Disconnected Clusters More Powerful Tools for Seamless Upgrades OpenShift on Bare Metal MetalLB with BGP mode OpenShift Virtualization Brings Together Virtual Machines and Containers Test the Latest in OpenShift Serverless A Smarter OpenShift Console https://youtu.be/X5BwzjTIPe0   …

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Devops Engineer Roles & Responsibilities : ViewPoint II

Devops Engineer works with different stake holders/teams to create and implement software systems Devops Engineer needs to be ready to work on multiple tools including any new tools emerging in the market Build Pipelines from fetching code to deploy applications on different environment Documentation : Document all the tasks being performed System analysis — Understand …

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JIRA Smart Commit

Introduction The smart commit is basically an Integration between GITHUB and JIRA instance. This will help us to reduce duplicating the work of updating the JIRA comments and helps to track the corresponding changes from the particular JIRA ticket. With the help of Smart Commit, You can: • comment on issues • record time tracking …

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DevOps Tools Compared To Avengers Characters

Here are some comparisons of popular DevOps tools with movie characters, along with simple explanations: Jenkins as Tony Stark (Iron Man): Jenkins is like Iron Man, the genius inventor who creates powerful technologies to help him fight battles. With Jenkins, DevOps engineers can automate their build, test, and deployment processes, just as Iron Man creates his …

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DevOps Vs. SRE: Understanding The Differences

In recent years, DevOps and Site Reliability Engineering (SRE) have emerged as two popular approaches for managing software development and operations. While both methodologies aim to improve the quality, speed, and reliability of software systems, they differ in their focus and approach. In this blog post, we will explore the differences between DevOps and SRE …

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The Importance Of Learning DevOps With Red Hat Linux

INTRODUCTION: In today’s fast-paced and highly competitive technology landscape, DevOps has emerged as a crucial methodology for streamlining software development and operations. At the heart of DevOps lies the need for efficient and reliable infrastructure, and Red Hat Linux has become synonymous with stability, security, and scalability. In this blog, we will explore the significance …

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Ponniyin Selvan Characters And AWS Tools Comparision

Ponniyin Selvan is a Tamil historical novel written by Kalki Krishnamurthy, while AWS is a cloud computing service provided by Amazon. However, if we were to draw comparisons based on certain characteristics, we could say that some Ponniyan Selvan characters can be compared to AWS tools as follows Aditha Karikalan – Amazon EC2: Aditha Karikalan was …

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Guidelines To Migrate From Self- Managed Kubernetes In AWS To Amazon EKS

Migration Migration — yet another usual term on the crowded streets of Software Architecture. Migration tasks in a Software Industry can be hectic, time-consuming, or painful involving multiple resources to get engaged, collaborate, and achieve the end-goal of Migrating our components to a newer environment. Though it is exhaustive, the journey as part of any …

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K8S – Failed To Verify ID Token

Failed to verify ID token : failed to verify signature: fetching keys : get failed Get “https://xx.xxxxx.com/keys”: context deadline exceed while accessing https://abcxyz.com/ This issue was intermittent due to the new service account and its configuration . Rolled back to previous config and issue got fixed . Further debug required to find the root cause

Auto Scaling Of PODs To Respond To The Real Demand Of Service | TPS- Is A Real Challenge

Streaming movies, Web-series , sports has been the current market trend . Google ‘world cup streaming’ and you can find n number of streaming platforms . Considering the current market trend & customers expectation of flawless streaming, setting up the technology platform has become a challenge. We have multiple tools options to handle the workload …

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Docker Node Image Will Not Be Supported By GKE ( Google Kubernetes Engine ) Starting V1.24

Kubernetes nodes use the container runtime to launch, manage, and stop containers running in Pods. The containerd runtime is an industry-standard container runtime that’s supported by GKE. The containerd runtime provides the layering abstraction that allows for the implementation of a rich set of features like gVisor and Image streaming to extend GKE functionality. The containerd runtime is considered more resource efficient and …

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EKS IPV4 Exhaustion

Problem Statement Elastic Kubernetes Service (EKS) is predominantly used by many of the Organizations because it is an upstream and certified conformant version of Kubernetes with backported security fixes. It also provides a managed Kubernetes experience for performant, reliable and secure Kubernetes clusters. In a rapidly growing Business or Organization, where the Workloads deployed to …

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Karpenter Containerd Runtime Mismatch With Datadog Docker Daemon

Issue: Datadog unable to post the Payload from the nodes provisioned by Karpenter. It prompts with the below error complaining about Multiple Mount points in your Kubernetes Pod. 2023–01–03 18:37:16 UTC | CORE | WARN | (pkg/collector/python/datadog_agent.go:125 in LogMessage) | disk:e5dffb8bef24336f | (disk.py:135) | Unable to get disk metrics for /host/var/run/containerd/io.containerd.runtime.v2.task/k8s.io/84b24aadc886673856bde8c5 ceb172658ec8e4f6d2d30e13b4c7ed2528da00af/rootfs/host/proc/sys/fs/binfmt_misc: [Errno 40] Too …

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Why Linux?

Every programmer no matter the domain would have a basic knowledge on Linux. So when we talk about Freshers first step into Programming then it would be Linux!! So now the most important question is why Linux knowledge, and if we want to skip that ,then you need to know what you are missing. To …

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Dreamworks With Linux: A New Frontier

DreamWorks Animation, the famous animation studio, used Linux as the operating system for its animation production pipeline. INTRODUCING DREAMWORKS AND LINUX Dreamworks is a leading animation studio that creates content for film, television, and online platforms. With its cutting-edge technology and award-winning productions, Dreamworks has become a leader in the industry. Linux is an open-source …

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Red Hat Certified Specialist in OpenShift Automation and Integration exam – EX380

Exam description The Red Hat Certified Specialist in OpenShift Automation and Integration exam (EX380) tests the knowledge, skills, and ability to plan, implement, and manage large-scale OpenShift Container Platform deployments in the enterprise. By passing this exam, you become a Red Hat Certified Specialist in OpenShift Automation and Integration that also counts towards earning a …

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EX200 Red Hat Certified System Administrator (RHCSA) exam

Overview Exam description The performance-based Red Hat Certified System Administrator (RHCSA) exam (EX200) tests your knowledge in areas of system administration common across a wide range of environments and deployment scenarios. The skills tested in this exam are the foundation for system administration across all Red Hat® products. By passing this exam, you become a …

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EX280 V1.12 Study Point for the exam

Overview The Red Hat Certified OpenShift Administrator exam (EX280) tests the knowledge, skills, and ability to create, configure, and manage a cloud application platform using Red Hat OpenShift Container Platform. By passing this exam, you become a Red Hat Certified OpenShift Administrator that also counts towards earning a Red Hat Certified Architect (RHCA®). Objectives listed …

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Popular Load Balancers in AWS Explained Easily

Problem Statement Amazon Web Services (AWS) offers several types of load balancers to distribute incoming network traffic across multiple resources like Amazon EC2 instances or containers. While we design Application and it’s Infrastructure components, we come across a stage where we need to Decide about the Load balancer to be used.   Here’s an easy …

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Education & Jenkins – Reap the benefits of CI/CD

Challenges : – Single place for seamless validation and deployment of salesforce project – Minimize human interference – Decrease the release time – Scheduled pull was limited – Development team have to locally pull the latest code and do Ant deploy Goals: – Simplifed approach – Reliable approach – Innovative – Faster deployments Solution : …

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How to install ContainerD

Containerd versions can be found in this location : https://github.com/containerd/containerd/releases Step 1 : Download the containerd package wget https://github.com/containerd/containerd/releases/download/v1.6.14/containerd-1.6.14-linux-amd64.tar.gz Unpack : sudo tar Cxzvf /usr/local containerd-1.6.14-linux-amd64.tar.gz Install runc : Runc is a standardized runtime for spawning and running containers on Linux according to the OCI specification wget https://github.com/opencontainers/runc/releases/download/v1.1.3/runc.amd64 $ install -m 755 runc.amd64 /usr/local/sbin/runc Download …

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DevOps & AWS Revolution: Sony Pictures’ Journey

The Digital Media Group (DMG) is a unit of Sony Pictures Technologies, which is part of Sony Pictures Entertainment, Inc. (SPE). SPE’s global operations encompass motion picture production, acquisition, and distribution; television production, acquisition, and distribution; television networks; digital content creation and distribution; operation of studio facilities and development of new entertainment products, services, and …

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Openshift Tools used by Volkswagen

Volkswagen has used a variety of tools available in OpenShift to build and deploy its digital services, including: Source-to-Image (S2I): Volkswagen has used S2I to create container images from source code automatically. S2I eliminates the need to create Dockerfiles manually and allows developers to focus on writing code rather than managing containers. Operators: Volkswagen has …

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CIS Benchmarks for Linux Systems

Objective: Below are the standard Guidelines as per the CIS Benchmarking standard to adopt a secure Configuration posture for Linux Systems running on x86 and x64 platforms. This benchmark is intended for system and application administrators, security specialists, auditors, helpdesk, and platform deployment personnel who plan to develop, deploy, assess, or secure solutions that incorporate …

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From Non-IT to DevOps: A Guide to Shifting Your Career

Introduction: In today’s rapidly evolving technological landscape, career transitions have become more common than ever before. If you’re currently working in a non-IT field but aspire to venture into the world of DevOps, you’re not alone. DevOps, which combines software development and operations, offers exciting opportunities for individuals looking to leverage their skills and embark …

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Chef Infra Automation Commands

Chef Infra Automation Commands Quick Command Guide reference:   knife bootstrap IPADDRESS(hostname) –sudo -x username -P password -N target1 (This installs chef-client and validates) knife bootstrap WIN-I2R3V7Q9AFV –sudo -x username -P passwd -N nodename   Bootstrap Virtual box ********************** knife bootstrap 192.168.1.101 –ssh-user vasanth –ssh-password ‘vasanth123’ –sudo –use-sudo-password –node-name virtuenode knife bootstrap x.x.x.x –ssh-user ubuntu …

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