Compute Flashcards
How to harness the best practices of Amazon EKS, but not having to host in the cloud?
Run the clusters on-premises using Amazon EKS Distro.
URL to retrieve EC2 bootstrap script on instance
https://169.254.169.254/latest/user-data
Fully managed service for easily automating the exchange of data between SaaS vendors and AWS services like Amazon S3.
AWS AppFlow
MAX amount of GiB that can be transferred with each flow using AWS AppFlow
100 GiB
What service should you use if you need to migrate an on-premise Oracle Database to AWS Aurora?
AWS DMS
What is the Default Termination Policy on an Auto Scaling Group
Instance launched with the oldest launch configuration is deleted first:
Determines which Availability Zones have the most instances, and at least one instance that is not protected from scale in. Determine which instances to terminate so as to align the remaining instances to the allocation strategy for the on-demand or spot instance that is terminating.
Default cooldown period of Autoscaling group
300 sec (5 minutes)
Autoscaling Dynamic Policy the provides a cost-effective solution without affecting the performance of the application
Target Tracking Scaling
Describe Autoscaling Simple Scaling
Scaling with a cooldown period before initiating different scaling activities. Set min, max, and desired # of instances.
Use cloudwatch alarms to scale out and in based on criteria set
Which Autoscaling policy should you use if you have different instance sizes and need to scale your application in response to predictable load change
Scheduled Scaling Policy
Which Autoscaling policy should you use if you have homogoneous instances and want your application scale based on historic load
Predictive Scaling Policy
If you stop and instance, can the instance host change on reboot?
Yes, if there is something wrong on the host of the old instance AWS will start on a new instance.
What instance type should you use if you have a heavy I/O intense application?
Storage Optimized
What instance type should you use if you have a large scale application or need to host a database?
Memory Optimized
What instance type should you use if you want a cost effective high preformance at low cost per compute ratio?
Compute Optimized
