List of GitOps Tools
What is GitOps? GitOps uses Git repositories as a single source of truth to deliver infrastructure as code. Submitted code checks the CI process, while the CD process checks and…
Read more »What is Platform Ops?
What Is a Platform? A platform encompasses a span of technologies involving different engineering stakeholders, for example, voice analytics software that has a front-end dev team, as well as an…
Read more »Chef Tutorials: Test Kitchen Workflow and Examples
kitchen.yml Used to configure virtual environments for Test Kitchen Gemfile Bundler uses this file to configure the gem repository and the list of gems to down‐load. Bundler will automatically determine…
Read more »How to Install Ruby on Linux
How to Install Ruby on CentOS 7 $ sudo yum install ruby$ ruby –version How to Install Ruby on Ubuntu $ sudo apt-get install ruby-full$ ruby –version How to test…
Read more »Chef Tutorials: What is Test Kitchen?
Use Test Kitchen to automatically test cookbooks across any combination of platforms and test suites: Bento Bento is a Chef Software project that produces base testing VirtualBox, Parallels, and VMware…
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Chef Tutorials: Test Kitchen – Example of kitchen.yml on AWS Ec2
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 Landmark, stock market…
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Chef Tutorials: Test Kitchen – Example of kitchen.yml using vagrant
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 Landmark, stock market…
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Chef Tutorials: Test Kitchen – Example of kitchen.yml using vagrant on ubuntu
Example of .kitchen.yml for driver_plugin vagrant with ubuntu for Chef Test Kitchen Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share…
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Chef Tutorials: Test Kitchen – Example of kitchen.yml with VAGRANT and VirtualBox
How to test Chef recipes/cookbooks on your workstation with VAGRANT and VirtualBox using Test Kitchen Install Test Kitchen, VAGRANT and VirtualBox: Chef Test Kitchen: Test Kitchen is a testing tool…
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Chef Tutorials: Test Kitchen – Example of kitchen.yml with vagrant on Windows
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 Landmark, stock market…
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Chef Tutorials: Test Kitchen – Example of .kitchen.yml with aws ec2 on Windows
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 Landmark, stock market…
Read more »Kubernetes Security Assesment
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 Landmark, stock market…
Read more »Waterfall -> Agile -> Cloud Native -> Next??
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 Landmark, stock market…
Read more »Top 10 Architecture Characteristics
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 Landmark, stock market…
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Chef Tutorials: What is Chef Solo with example programs
What is Chef Solo? chef-solo is a command that executes Chef Infra Client in a way that does not require the Chef Infra Server to converge cookbooks. chef-solo uses Chef…
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Chef Tutorials: Chef roles Tutorials and Example
What is Role? A role is a way to define certain patterns and processes that exist across nodes in an organization as belonging to a single job function. Each role…
Read more »Chef Tutorials: Uninstalling Chef Software, chef-automate and chef-server
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 Landmark, stock market…
Read more »Python Example Code: Find all the pairs of numbers which sum upto `k`
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 Landmark, stock market…
Read more »Python Example Code: Convert the string “123” into 123, without using the built-api int()
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 Landmark, stock market…
Read more »Python Example Code: Find the pair of adjacent elements that has the largest product
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 Landmark, stock market…
Read more »Python Example Code: Program to display the Fibonacci sequence up to n-th termPython Example Code:
What is the Fibonacci sequence? The Fibonacci sequence is a set of integers (the Fibonacci numbers) that starts with a zero, followed by a one, then by another one, and then…
Read more »Python Example Code: Program for printing k largest elements in an array
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 Landmark, stock market…
Read more »Python Tutorials: List of functions of list Datatypes
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 Landmark, stock market…
Read more »Linux Tutorials: Enable SSH Password authentication in linux servers
Step 1 – Enable PasswordAuthentication yes in sshd_config Step 2 – Restart sshd server Step 3 – Set user password Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and…
Read more »Python Tutorials: Modules with example
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 Landmark, stock market…
Read more »Python Tutorials: Namesapce in Python with example
What is Namespace in Python? A namespace is a collection of currently defined symbolic names along with information about the object that each name references. You can think of a…
Read more »Chef Tutorials: knife command line reference
knife bootstrap knife client knife configure knife cookbook knife cookbook site knife download knife delete knife edit knife list knife node knife role knife show knife ssh knife ssl check…
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Chef Tutorials: Configure Workstation with knife
Install Chef Workstation Configure Chef Workstation with Chef Infra Server using Knife Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share…
Read more »Chef Tutorials: chef-automate commands line reference
Usage:chef-automate [command] 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 Landmark,…
Read more »Linux Tutorials: Types of Process in Linux
There are five types of Process in Linux 1. Parent process: The process created by the user on the terminal. All processes have a parent process, If it was created directly…
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