aws

Notes

AWS server details

(will act as remote) aws Ubuntu Server 20.04

• hostname: ip-172-31-45-141 (TODO: will be changed later in day 3)
• login/user: ubuntu
• ip: ?

(will act as local) Host Machine Ubuntu Desktop 20.04

• hostname: Pavilion
• login/user: devpogi

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• AWS already asks us to create a public-key pair. So that is the default way to access server now (-i switch with ssh).

The first time you connect to your server, you are asked if you wish to "cache the host key". Getting this warning for future connections means that either: (a) you are being fooled into connecting to a different machine or (b) someone may be trying a "man in the middle" attack.

• I got this warning on aws ec2 (t2.micro) Ubuntu server when I relaunched the instance the next day. The public IP did change. This made me to write this script to keep a track of the IPs I had used in the past. This might help somehow sometime but I am not sure how for now. I think it is good to keep records anyway.