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…
Category: 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…
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…
Recovery Time Objective (RTO) and Recovery Point Objective (RPO)
Recovery Time Objective (RTO) The time it takes after a disruption to restore a business process to its service level, as defined by the operational level agreement (OLA) . Simply how much time will take to restore the service. Ex: if a disaster occurs at 12:00 PM (noon) and the RTO is eight hours, the DR process should restore the…
Difference between AWS S3 bucket policies,IAM policies and S3 ACL
It’s some time little bit difficult to set S3 permission properly with so much of options , but in reality each one is available for different purpose . We need to understand which policies or native control mechanism when to use. So before going to the topic for when to use , first we will see what is fundamental concepts…
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…
What’s the difference between an AMI and EBS snapshots?
EBS Snapshot – An EBS snapshot is a backup of a single or individual EBS volume. The EBS snapshot contains all the data stored on the EBS volume at the time the EBS snapshot was created . AMI – Amazon Machine Image . By the abbreviation itself we can identify its for an EC2 instance. An AMI image is a…