100 Days of DevOps and Cloud (AWS), Day 10: Automating Backups Over SSH, and What an Elastic IP Really Costs Now

Short summary

Day 10 of a DevOps series covers automating directory backups over SSH using Bash scripts with key-based authentication, plus associating an AWS Elastic IP to an EC2 instance for a stable public address. The author corrects outdated advice: since February 2024, AWS charges ~$3.60/month for every public IPv4 address whether attached or not, ending the old free-while-attached model. Both tasks illustrate setting up infrastructure that runs itself without babysitting.

• •Bash script automates zipped backups over SSH with key-based auth
• •Elastic IP gives EC2 a stable public address across reboots
• •AWS now charges ~$3.60/month per public IPv4 address regardless of attachment state

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