Amazon EC2
What is AWS EC2?
● EC2 stands for Elastic Compute Cloud.
● Amazon EC2 is the virtual machine in the Cloud Environment.
● Amazon EC2 provides scalable capacity. Instances can scale up and down automatically based on the traffic.
● You do not have to invest in the hardware.
● You can launch as many servers as you want and you will have complete control over the servers and can manage security, networking, and storage.
Instance Type:
● Instance type is providing a range of instance types for various use cases.
● The instance is the processor and memory of your EC2 instance.
EBS Volume:
● EBS Stands for Elastic Block Storage.
● It is the block-level storage that is assigned to your single EC2 Instance.
● It persists independently from running EC2.
Types of EBS Storage
▪ General Purpose (SSD)
▪ Provisioned IOPS (SSD)
▪ Throughput Optimized Hard Disk Drive
▪ Cold Hard Disk Drive
▪ Magnetic
Instance Store: Instance store is the ephemeral block-level storage for the EC2 instance.
● Instance stores can be used for faster processing and temporary storage of the application.
AMI: AMI Stands for Amazon Machine Image.
● AMI decides the OS, installs dependencies, libraries, data of your EC2 instances.
● Multiple instances with the same configuration can be launched using a single AMI.
Security Group: A Security group acts as a virtual firewall for your EC2 Instances.
● It decides the type of port and kind of traffic to allow.
● Security groups are active at the instance level whereas Network ACLs are active at the subnet level.
● Security Groups can only allow but can’t deny the rules.
● The Security group is considered stateful.
● By default, in the outbound rule all traffic is allowed and needs to define the inbound rules.
Key Pair: A key pair, consisting of a private key and a public key, is a set of security credentials that you can use to prove your identity while connecting to an instance.
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