Explained Kubernetes DaemonSet with Example
Creating a Kubernetes DaemonSet Let’s use a simple DaemonSet for Apache HTTP server to illustrate this Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have…
Kubernetes Yaml file faster for Deployment and DaemonSet using kubectl
The fastest hack is to create a deployment file using Now replace the line kind: Deployment with kind: DaemonSet in nginx-ds.yaml and remove the line replicas: 1…
Explained Kubernetes ReclaimPolicy for PersistentVolumeClaim & PersistentVolume
Example 1 Example 2 Example 3 Example 4 Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech…
AWS Lab & Exercise: VPC – Virtual Private Cloud Assignment
Problem Statement: Create a VPC. put 4 subnets into it with 2 private and 2 public in 2 different availability zones add 2 routing tables, 1 public…
Free SSL Certificates using Letsencrypt.org and acme.sh on XMAPP in Linux
Referencehttps://github.com/acmesh-official/acme.sh Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at…
“Key is already in use” of How to use 2 public key in github
Error 1: Solution 1 – https://stackoverflow.com/questions/17846529/could-not-open-a-connection-to-your-authentication-agent Error – 2 Solution – 2 eval ssh-agent -sssh-add ~/.ssh/id_rsa_rajesh.cotocus Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences….
Top Sites for Corporate Training, Online Tutoring and Digital Education
Online Training Also known as computer based training (CBT), distance online learning, or e-learning, online training is a form of instruction that takes place completely on the…
DevOps Interview Questions and Answer – Part 5
DevOps Interview Questions: Programming What is your favorite scripting/programming language(s)? Why ? General CS, algorithms Q&A: 5 minutes Data structures – discuss possible implementations and applications: Binary…
Front End Developer Interview Questions
CSS Interview Questions What is CSS selector specificity and how does it work? What’s the difference between “resetting” and “normalizing” CSS? Which would you choose, and why?…
How to cope with a 7-page essay faster
Being a student is not as easy as you might wish it to be. You have many responsibilities that make your life complicated from time to time….
4 Recommendations on Starting that Terrifying Research Project
How to Start a Research Paper that You Dread the Thought of? If you’re a college or university student, academic writing assignments are an indispensable part of…
Deep Dive into Git Internal with SHA1 and Hash
Questions What is SHA1? What if 2 hash collision while using git? Process of sign a commit or tag in git? Why sing a commit or tag…
What is Jira Advanced Roadmaps (formerly Portfolio)?
Advanced Roadmaps aka Portfolio is a tool that enables teams to build plans and track progress in Jira Software. Being an add-on for Jira, it provides seamless…
What is Large Scale Scrum (LeSS)?
Large-Scale Scrum ( LeSS ) is a way of scaling agile and scaling scrum to large and big product development groups. It has been used since 2005…
Site Reliability Engineering – SRE – Free Ebooks and Handbook Collection
https://s905060.gitbooks.io/site-reliability-engineer-handbook/content/ https://github.com/s905060/site-reliability-engineer-handbook https://github.com/captn3m0/google-sre-ebook https://github.com/euclid1990/google-sre-book https://github.com/dastergon/awesome-sre https://github.com/sysbooks/site-reliability-engineering https://github.com/captn3m0/google-sre-ebook/releases https://github.com/vorozhko/site-reliability-engineer-guide https://github.com/andrealmar/sre-university https://github.com/mxssl/sre-interview-prep-guide https://github.com/chiaen/sre-book-in-audio https://free-for.dev/ Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at…
List of IP Address of Microsoft Bingbot and Googlebot
GooglebotGooglebot is the generic name for Google’s web crawler. Googlebot is the general name for two different types of crawlers: a desktop crawler that simulates a user…
Jenkins Pipeline Complete Reference Tutorials
What is a Jenkins Pipeline? Jenkins Pipeline (or simply “Pipeline”) is a suite of plugins which supports implementing and integrating continuous delivery pipelines into Jenkins. Jenkins Pipeline…
How to save HTTP requests headers, methods and body to a file?
Method 1 – Using mod_log_forensic apache Module Step 1 – Check if mod_log_forensic module is enabled or not Step 2 – Enable mod_log_forensic module using following lines…
DDOS attack and HTTP flood attack on AWS from AWS EC2 instance using New Relic Synthetics & infalted aws bill to $3000
How I prevented DDOS attack and HTTP flood attack from New Relic Synthetics Monitoring of AWS EC2 Instance? 5 Dec 2020 – DDOS attack and HTTP flood…
Why Every University Library Should Be Well-Equipped with ICT
When it comes to picking a college or a university, people don’t go there just to get by. They seek a higher-level education that would help them…
Weight Loss and Body Building Web Page Collections & Reference
Top 10 most effective home made drinks for faster fat reduction and weight loss Top 10 Supplements & Capsules for Body Building to gain Muscle Mass and…
What is Prometheus and How it works?
Meaning of Prometheus In Greek mythology, Prometheus, possibly meaning “forethought”), is a Titan god of fire. Prometheus is known for his intelligence and for being a champion…
AWS Best Practices for DDoS Resiliency
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Protected: Rajesh Kumar Supported Tools & Cost Table – 2021
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How to setup Datadog APM for Java application running with Tomcat
SOURCE FOR APM – https://docs.datadoghq.com/tracing/trace_collection/?tab=containers This note is applicable for only Host Based APM. Step 1 – Install Datadog Agent in Centos or Ubuntu or Windows Step…
How to install datadog agent in centos rhel linux?
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Datadog Agent Setup in Windows Step by Step Guide
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday…
Self-hosted Alternative for gist, apple notes, onenote, Google keep & evernote
Self Hosted Gist alternatives like markdown software https://simplemde.com/ https://github.com/cebe/markdown https://packagist.org/packages/michelf/php-markdown https://parsedown.org/demo https://github.com/FoxUSA/OpenNote https://paperwork.cloud/ https://github.com/paperwork/paperwork https://github.com/erusev/parsedown Best alternative for onenote including Free, Open source and self hosted onenote…
List of Free and Open Source Maps and Global Positioning System (GPS)
Geo2tz – Get the timezone from geo coordinates (lat, lon). MIT Go/Docker GraphHopper – Fast routing library and server using OpenStreetMap. (Source Code) Apache-2.0 Java Hauk – Easy to setup location sharing platform that…
List of Open Source CMS which is Developed in Laravel
Craft CMS What is Craft CMS?Craft is a flexible, user-friendly CMS for creating custom digital experiences on the web and beyond. It features: An intuitive, user-friendly control…