Immutable Cloud Infrastructure one container at a time
Kubernetes is a container orchestration platform that was originally developed in-house by Google. In 2014 they open-sourced it and made it available to the public. If you take a look at the official documentation, you’ll find the following definition of Kubernetes: Kubernetes is a portable, extensible open-source platform for managing containerized workloads and services, that […]
This course has 3 sets of requirements: User Requirements Software Requirements Hardware Requirements User requirements Kubernetes is a really powerful software and it’s also quite complex. That’s why you need to some of the basics before you start learning Kubernetes: Linux (e.g. CentOS or Ubuntu), Bash, Vim Hands-on Docker experience – that’s so that you […]
This course comes with it’s very own study guide which you need to download from Github: https://github.com/Sher-Chowdhury/Kubernetes-Study-Guide You can download this guide by doing a git clone: git clone git@github.com:Sher-Chowdhury/Kubernetes-Study-Guide.git This guide is made up number of sections and Each of these sections have a collection fo topic folders. These sections and topic folders corresponds […]
The course takes a learn-by-doing approach so that you get acquainted with as many of the kubernetes features as quickly as possible. At it’s core, Kubernetes is all about using the kubectl command along with yaml files that you feed into it. That’s why this course is primarily focused on how to write these yaml […]
At a fundamental level, Kubernetes is used for running containers. Docker can also do the same so might wonder, why Kubernetes when you have Docker? Theres a lot of reasons why, but let’s take a look at one of those reason using the following example: In this scenario we have a IT Admin who uses […]
Here’s the policy you need to attach to your instance’s IAM: { “Version”: “2012-10-17”, “Statement”: [ { “Effect”: “Allow”, “Action”: “s3:*”, “Resource”: [ “arn:aws:s3:::bucket-name”, “arn:aws:s3:::bucket-name/*” ] } ] } You can replace the ‘*’ above with more restrictive permissions (e.g. read only) where necessary. This approach means you don’t need to set up any kind […]
This is just a quick summary of Ansible and Puppet.
Functions are a block of code that can call in your code. Functions and Packages are the 2 main ways used for organising code in Golang. You can feed parameters to functions and functions can also return values. You can call one function from inside another function.
Before you can start writing Golang code. You first need to set up a Workspace. A workspace is just a folder that will store all your Golang related stuff. In my case I’ll create a workspace called ‘go_project’: $ mkdir /root/go_project A workspace needs to have 3 top level folders called pkg, bin, and src: […]
Installing Golang is really easy, just following the instructions in the official guide. For example, for RHEL/CentOSm we would do something like: golang_archive_filename=go1.10.3.linux-amd64.tar.gz curl -o ${golang_archive_filename} https://dl.google.com/go/${golang_archive_filename} tar -C /usr/local -xzf ${golang_archive_filename} cd /usr/local/go/bin cp -rfp /usr/local/go/bin/* /usr/bin/ However here are a few other ways to install Golang: RHEL/CentOS install tips A quick way to […]