What is Annotations in Kubernetes?

What is Annotations in Kubernetes? There are two way using you can attach metadata to Kubernetes objects. labels annotations Kubernetes annotations is used to attach arbitrary non-identifying metadata to objects….

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What is EKS and How EKS can help you?

In simple line, Amazon EKS is generally available, bringing fully-managed Kubernetes to AWS. Amazon launched Amazon EKS in November at its re:Invent 2017 conference. Till the time this article is…

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Understanding the tools sets in Docker ecosystem

Docker Engine Docker Engine is our lightweight and powerful open source containerization technology combined with a work flow for building and containerizing your applications. Docker Engine is a client-server application…

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Introduction of containers services at Amazon AWS

Here are the following Services which is offered by AWS at present which will help you to onboarding Containers on AWS platforms. Amazon Elasitc Container Services (ECS) Amazon Elasitc Container…

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Understanding Chef Node Objects json content!

Chef Node Objects Defined! For the chef-client, two important aspects of nodes are groups of attributes and run-lists. An attribute is a specific piece of data about the node, such…

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Understanding the chef cookbook’s chefignore file

The chefignore file is used to tell knife which cookbook files in the chef-repo should be ignored when uploading data to the Chef server. The type of data that should…

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Lets Understand the Ruby programming world in 5 mins!!!

Lets Understand the Ruby programming world in 5 mins? Ruby Ruby is a dynamic, interpreted, reflective, object-oriented, general-purpose programming language. It was designed and developed in the mid-1990s by Yukihiro…

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How to execute grovvy script remotely on Jenkins server?

A Jenkins Admin can execute groovy scripts remotely by sending an HTTP POST request to /script/ url or /scriptText/. curl example via bash [code] curl -d “script=<your_script_here>” https://jenkins/script # or…

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How to run/execute groovy script in Jenkins?

Here are the List of way using you can apply grovy code in Jenkins Method -1: Groovy plugin This plugin adds the ability to directly execute Groovy code. More info…

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Database of Groovy Script for Jenkins Automation

Here are the list of Groovy Script which can be used in Jenkins to automate the JOBs and CI process. Please add your list in the comment sections as well….

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How Jenkins works? Jenkins Architecture Explained!!!

Jenkins is continuous integration tools which help to integrate other tools to automate the software development activity and repetitive tasks. Jenkins has 2 releases. One, Community version which open source…

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Secure Tunnels to localhost using ngrok

Secure Tunnels to localhost using ngrok ngrok is a free tool that allows you to expose a web server running on your local machine to the internet. It includes additional…

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run_list and env_run_list explanined in chef role

run-list A run-list defines all of the information necessary for Chef to configure a node into the desired state. A run-list may include roles and/or recipes. A run-list must be…

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How to run chef-client in why-run mode aka “no-operation”

why-run mode is a way to see what the chef-client would have configured, had an actual chef-client run occurred. This approach is similar to the concept of “no-operation” (or “no-op”):…

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List of Default ports used in OpenStack components

List of Default ports used in OpenStack components  OpenStack service Default ports Port type Block Storage (cinder) 8776 publicurl and adminurl Compute (nova) endpoints 8774 publicurl and adminurl Compute API…

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Logstash explained in 5 mins

What is Logstash? Logstash is an open source, server-side data processing pipeline that ingests data from a multitude of sources simultaneously, transforms it, and then sends it to your favorite…

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Understanding the chef cookbook’s Berkshelf file

Configuration Management using chef is being implemented with the help of desire files, which is often called a “cookbooks” in chef. Usuallay separate cookbooks is written in practice for each…

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AWS diagram icon sample and reference

Aws diagram and icon explained 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…

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List of AWS regions and availability zones

List of  AWS Regions This is complete list of  AWS regions available currently. S.No Code Name 1 us-east-1 US East (N. Virginia) 2 us-west-2 US West (Oregon) 3 us-west-1 US West…

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How to run UI testing in Docker container using Selenium

Docker is one of the revolutions technologies which has created lots of buzz in the Software development practices. Docker has not only helped to setup Continuous Integration and Delivery but…

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Docker Errors and Solutions Guide

Error: Failed to get D-Bus connection: Operation not permitted I am having issue running or checking status on any services in Docker in Centos 7. I get: “Failed to get…

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“Run in Preflight” and “Run in Preflight Only” explained in IBM UBuild!

The Preflight plugin provides steps that can be used for developer Preflight builds Explanation The preflight client first starts a simple file server. First, The server is used to transfer…

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Difference between jenkins and Urbancode build

What is the difference between jenkins and Urbancode build? jenkins Urbancode build Jenkins is open framework for automating the repeative tasks and has great plugins which can be used to…

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How to Install plug-ins in IBM UrbanCode Deploy

Procedure Download the installation files for one or more plug-ins from the following site: https://developer.ibm.com/urbancode/plugins/ibm-urbancode-deploy/ Load the plug-ins: For automation plug-ins, click Settings > Automation Plugins, then click Load Plugin. For source plug-ins,…

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How to Install plug-ins in IBM UrbanCode Release

  Procedure Download the installation files for one or more plug-ins from the following site: https://developer.ibm.com/urbancode/plugins/ibm-urbancode-build/. Do not extract the compressed files. Load the plug-ins: From the IBM UrbanCode Build user…

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How to Install plug-ins in IBM UrbanCode Build

Procedure Download the installation files for one or more plug-ins from the following site: https://developer.ibm.com/urbancode/plugins/ibm-urbancode-build/. Do not extract the compressed files. Load the plug-ins: From the IBM UrbanCode Build user interface,…

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Upgrading from IBM uBuild 5.0.1.3 or earlier

SSLv3 is no longer supported by IBM uBuild or IBM UrbanCode Build due to the POODLE vulnerability. In fixing the vulnerability, there are a few steps that should be taken…

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Upgrade Artifactory from Open-Source (OSS) to PRO?

The upgrade process from OSS to PRO is the same one that is used for upgrading from any Artifactory version to the latest version; The procedure to upgrade Artifactory depends…

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amazon-simple-queue-service

Getting Started with Amazon Simple Queue Service (SQS)

We’ve put together a list of resources that we think will be useful to you, as you familiarize yourself with Amazon SQS and get started working with it. Introductory Topics…

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languages-for-syntaxhighlighter

List of Supported Languages for SyntaxHighlighter

Brush name Brush aliases File name ActionScript3 as3, actionscript3 shBrushAS3.js Bash/shell bash, shell shBrushBash.js ColdFusion cf, coldfusion shBrushColdFusion.js C# c-sharp, csharp shBrushCSharp.js C++ cpp, c shBrushCpp.js CSS css shBrushCss.js Delphi…

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