An Elastic Network Interface, also known as an ENI, is a virtual network interface that can be attached to an instance that is running inside of a virtual private cloud. An ENI might have a primary private IP address attached to it.
In AWS, resources are identified by their respective Amazon Resource Names (ARNs). IAM policies, Amazon Relational Database Service (Amazon RDS) tags, and API calls all require an ARN to uniquely identify a resource across AWS.
If you have enabled multi-Availability Zones, Amazon RDS will move to a backup replica in a different Availability Zone in the case of a planned or unforeseen outage of your primary DB instance.
You can utilize a TCP protocol to connect from the client to your load balancer if you want to use the SSL protocol but do not want to break the connection on your load balancer. Install certificates on all the instances of your back-end application that handle requests, and use the SSL protocol to establish a connection from the load balancer to your back-end application.
It converts an operating or stopped Amazon EBS-backed instance into an Amazon EBS-backed AMI. The new AMI includes block device mapping data for any instance store volumes or EBS volumes that you added to your instance in addition to the root device volume.
When using an HTTP/HTTPS load balancer, the X-Forwarded-For request header can be used to determine the client's IP address. Your server access logs will only show the IP address of the load balancer because it is what intercepts communication between clients and servers. The client's IP address is recorded in the X-Forwarded-For request header and forwarded to your server using Elastic Load Balancing.
A dimension is a key value pair that is used to uniquely identify a metric; the user cannot obtain CloudWatch metrics information unless he has defined the appropriate combination of dimensions. The dimension combination in this scenario is either Box=UAT, App=Document or Box=UAT, App=Notes.
