Monthly Archives: January 2018

Auto-scaling and load balancing

Let’s work on configuring a  highly available and fault tolerant web application. Before we can begin the same let’s try to understand the components in achieving the same. Elastic Load Balancer: ELB is the  EC2  service which automatically distributes the incoming traffic to all the instances associated with the ELB. Elastic load balancer shall be […]

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AWS IAM

IAM IAM(Identity access management is the service where you manage uses groups and access policies for your AWS account.You can manage Users Groups Roles IAM Access Policies API keys Specify a password policy as well as manage MFA requirement on per user basis. By default, any IAM user created do not have any access. We […]

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sudo versus su

Usually, Linux system shall be configured in such a way that only certain users shall have access to the su command. To disable command for all make sure there shall be no user in the wheel group on the system. Then go to /etc/pam.d and edit the “su” file uncomment the following line

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Chef Installation and setup

So today we will learn how to set up our battleground or chef environment. After finishing this tutorial you will end up Configuring fully functional Chef server Configuring  Your workstation Adding test nodes to your Chef environment. Basic experience   with chef and knife tools So lets hit the track and spin up the environment. Below is […]

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Chef Architecture

Before you start working with chef, it’s important to understand the chef architecture so that you can have some idea about the workflow that we will be following during chef learning path. At top level view, chef setup can be divided into three main components as shown in below image. Chef workstation: Chef workstation is […]

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Understanding OSI

OSI model is also known as Open Systems Interconnection model is a standard in networking to create other standards of networking domain. You can take it as a framework to create networking standards. When we talk about OSI model, a basic diagram as shown below comes to our mind which tells about various layers that […]

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Continuous deployment,micro-services and containers-three champ

At first continuous integration, microservices and containers seem to be isolated topics. Also with DevOps implementation, it’s also not a hard fast rule that CI is only possible if you use microservices or to run micro-services you need to implement container technology. All things can work independently. But in case if you bring these three […]

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Monolithic vs micro services

Microservices is a way of building a single application which is composed of many small services. These all services are independent of one another and also tested and deployed independently of one another. In order to communicate with each other as a part of the single application, these micro-services communicate with each other using APIs […]

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