EC2 for Solutions Architects¶

• AWS EC2 instances are billed by the second, t2.micro is free tier
• On [[Linux]] / [[Mac]] we use [[SSH]], on [[Windows]] we use [[Putty]]
• [[SSH]] is on [[port]] 22, lock down the security group to your [[IP]]
• [[Timeout]] issues => Security Group issues
• Permission issues on the [[SSH key]] => run "chmod 0400"
• Security Groups can reference other Security Groups instead of [[IP range]]s (very popular exam question)
• Know the difference between Private IP, Public IP and Elastic IP
• You can customise an AWS EC2 instance at boot time using EC2 User Data
• Know the 4 EC2 Instance Launch Types:
• Know the basic instance types: R, C, M, I, G, T2/T3
• You can create EC2 AMIs to pre-install software on your EC2 => faster boot
• EC2 AMIs can be copied across regions and accounts
• EC2 Placement Groups