EC2 overview
Pricing Options
DORS
- Dedicated (most expensive)
- On-Demand (pay by the hour or second)
- Reserved (reserve for 1-3 years. up to 72% discount)
- Spot (purchase unused capacity. up to 90 % discount)
Instance Types
- R: RAM
- C: CPU
- M: "medium", balanced
- I: I/O
- G: GPU
- T2/T3: burstable
Related Services
- ASG
- ELB
- EBS
- EFS
Relevant Knowledge
- SSH (e.g.
ssh ec2-user@<IP> -i <rsa-key.pem>) - User Data / bootstrapping
Metadata
Data about the EC2 instance. Inspect:
curl http://<IP>/latest/meta-data/
e.g. getting the IP:
curl http://<IP>/latest/meta-data/public-ipv4
Similarly, user-data can also be queried:
curl http://<IP>/latest/user-data