HA & Scaling Flashcards
HA & Scaling
A Launch Template contains what 6 pieces of information
AMI
Instance Type
SG
Networking
Userdata
Version
HA & Scaling
4 steps to define an Autoscaling group
(1) Define a launch template
(2) Define your ELB config
(3) Define your scaling policy
(4) Set any notifications you want to recieve
HA & Scaling
3 scaling approaches
Reactive Scaling
Scheduled Scaling
Predictive Scaling
HA & Scaling
How can you ensure you use dedicated hosts on EC2 instances in your Auto Scaling groups.
launch configurations / launch templates
launch template
launch templates provide more advanced Amazon EC2 configuration options. For example, you must use launch templates to use Amazon EC2 Dedicated Hosts
HA & Scaling
You need multiple versions of a launch configuration. How could you do this?
Use a launch template instead
A launch template is similar to a launch configuration, in that it specifies instance configuration information.