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Showing posts from January, 2018

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C#.NET Equality : Equals() , == operator and ReferenceEquals()

Posted by Rama Subba Reddy Mukkamalla on January 07, 2018

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Rama Subba Reddy Mukkamalla: Expert in System Design, Application Architecture, Event-Driven Solutions | AWS Certified Solution Architect | Tech Blogger

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Kubernetes for Developers #4: Enable kubectl bash autocompletion

Kubectl provides autocomplete support for bash which can save us lot of typing. Bash on Windows using Git bash 1. Install Git bash from https://git-scm.com/downloads if it is not available in your computer 2. Navigate to “C:\Users\<yourname>” from Git bash cli 3. Run following command to get kubectl autocompletion bash commands and save into “kubectl-completion.bash” file > kubectl completion bash > ~/kubectl-completion.bash 4. Create or Update .bashrc file source > echo 'source ~/kubectl-completion.bash' >> .bashrc 5. Restart Git bash and start typing kubectl get po ( press [TAB] key ) Bash on Windows using Conemu/Cmder It is an another handy multi and split tab windows terminal. It supports multiple command terminals like cmd, PowerShell, bash and etc. 1. Install Git bash from https://git-scm.com/downloads if it is not available in your computer 2. Install C...

Kubernetes for Developers #10: Kubernetes Pod YAML manifest in-detail

In General, K8 resources are usually created using YAML or JSON manifest. YAML Structure : YAML is a Indentation based and superset of JSON, which means any valid JSON file is also a valid YAML file. There are two types of structures we mostly use. Map : It is key-value pair like Json Object. Ex : simple key-value structure where key and value are strings #yaml apiVersion : v1 kind : Pod #json { "apiVersion" : "v1" , "kind" : "Pod" } Ex : complex key-value structure where value act as another Map #yaml apiVersion : v1 kind : Pod metadata : name : pod-nginx #json { "apiVersion" : "v1" , "kind" : "Pod" , "metadata" : { "name" : "pod-nginx" } } List: It is sequence of values like Json Array represented using...

Kubernetes for Developers #1: Kubernetes Architecture and Features

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Kubernetes for Developers #14: Kubernetes Deployment YAML manifest in-detail

In previous articles, we have learned how to create or manage Pod manually. However, in real-world use cases, The Pod creation/re-creation should be done automatically and remain healthy without manual intervention, that’s where K8 Deployment comes into the picture. It helps us to manage set of identical pods without creating/updating/deleting pods manually. It makes desired number of identical pods always stay up and running automatically without user intervention. It is a high-level resource, the actual pods are created and managed by the ReplicaSets, not by the Deployment directly. ReplicaSet constantly monitors the list of running pods and makes sure the actual number of pods are always matching the desired number of pods. It there are only few pods are running, it creates new replicas from a pod template. If there are many pods are running than desired number, it removes the excess replicas. Deployment YAML file contains both desired replica count and Pod template in it. Therefor...

ClosedXML – Read/Write Excel File Using C#.NET

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