AWS

What is the difference between AWS IAM user and role

Below are the difference between IAM user and role. IAM User: An IAM user has permanent long-term credentials and is used to directly interact with AWS services . Users can make requests to AWS services using security credentials. A user is a unique identity recognized by AWS services and applications. Similar to a login user in an operating system like…

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Ansible basics

Ansible Architecture

The above diagram illustrate Ansible architecture . The beauty of ansible is agentless . By default it manages remote connections over SSH (Linux & Unix) or WinRM (windows). The “Ansible Automation Engine” consists of below core components. Core component: *Host Inventory *Modules *Playbook *Plugins Now lets see each component functionality. Host Inventory: Inventory is a collection of hosts or nodes…

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AWS

How to connect aws ec2 instance Linux server console

In traditional Data center environment , VM ware and other cloud providers like Azure having options to connect Linux virtual server serial console . Through IMM console or through web browser or through some application call . Normally why we want to connect with Linux server console? If you are unable to reach your instance via ssh , problem diagnostics…

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AWS

How to practice AWS using without paying

In AWS account setup is simple concept . AWS Account is normally common for single user or Enterprise account for organisation,you will not find any difference in service features , view etc . There is no concept of trial account or separate free tier account. It is really possible to practice AWS without paying using AWS free tier? The answer…

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AWS

AWS ENI – Error deleting network interface

In AWS sometimes you could see the error message when try to detach ENI “Error deleting network interface” .  It’s normal , we just need to understand the concept . ENI’s are not only created by manually . When you create some resources , AWS will automatically create the backend must required resource. Example when you create EFS it will…

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AWS

How to login with AWS CLI from Windows

Step1: To login into AWS CLI , first need to install AWS CLI package . The CLI package available for different OS . you can download from amazon website http://docs.aws.amazon.com/cli/latest/userguide/installing.html Step2: Create IAM User account with access key and Secret Key . Dont forget to save , you can not view or download it again. You can create multiple access…

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AWS

How to attach role to AWS EC2 instance after launching

Few years back this feature was not available in AWS .Once instance launched with particular role you can not replace . Need to launch the instance with required role .This is really challenge task in real time scenario Now Amazon enabled this beautiful features . So you can attache or replace the role to instance anytime even in EC2 instance…

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Ansible basics

What is Ansible?

Ansible is an open-source IT automation tool. Ansible was written by Michael DeHaan and acquired by Red Hat in 2015 . Ansible supports cross platform , supports all major OS,Physical ,virtual,cloud and network. Ansible bundled with 1000+ modules in built , which will make task easier to run client nodes. Ansible major features are : 1.Configuration Management 2.Software provisioning 3. Application deployment4.Multi-tier…

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AWS

How to redirect http URL to https in AWS ELB

In AWS ELB we can pass the traffic as HTTP (80) or HTTPS (443) . If you are using HTTPS you have to terminate SSL certificate either in ELB or backend EC2 instance. Normally users will type the URL directly in browser  not with HTTP or HTTPS . When user type the URL with HTTPS the request will responded directly…

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AWS

How to create S3 Bucket in AWS and set permission

Creating S3 bucket very simple . In-fact you can create without any guidance also , like creating folder in google drive ,super easy. But if you are new , you may need some assistance on setting up permissions. The below steps will help you. 1.Login to S3 console page You can find information about any existing bucket . 2.Click “Create…

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Azure

How to Connect Azure Linux Virtual Machine Serial Console

The Linux Administrators will love this features . When we started moving to cloud applications we started modernized to adapt for cloud . We got so many features ,easy access , fast ,salable etc when compare with on-premises. But what will happen really when some issue with OS and due to some error server got hang etc. Ultimately the fundamental…

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AWS

How to configure ELB in AWS

Elastic Load Balancing – ELB Elastic Load Balancing automatically distributes traffic across multiple targets – Amazon EC2 instances, containers and IP addresses – in a single Availability Zone or multiple Availability Zones. Amazon offers 3 types of Load Balancer: 1.Classic Load Balancer2.Application Load Balancer3.Network Load Balancer Now lets see how to configure classic load balancer and how to configure Classic…

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AWS

Amazon Glacier in 5 min

What is Amazon Glacier? Amazon Glacier is an extremely low-cost storage service that provides secure, durable, and flexible storage for data backup and archival.Remember its not a direct backup tool , its a storage service for Backup & Archive.It is managed service from Amazon,so need to worry about capacity planning . You can store unlimited data with low price $0.004 per…

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AWS

ssh_exchange_identification: read: Connection reset by peer aws

There is lot of possibilities for this type of error . You can try below steps one by one. As a first step check what is really going on while establishing ssh connection. Ex: 1.ssh -v -i /home/cent/keys/my-key.ppk user@192.168.1.2 2. Check the public and private keys are proper ,correct pair , also check the permission of the keys.3.IP of the…

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