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78 lines
3.2 KiB
78 lines
3.2 KiB
2 years ago
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#!/bin/bash
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# Gather a list of AWS Instances containing their name, id, private IP address, and Key Pair name
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instances=$(aws ec2 describe-instances --query 'Reservations[].Instances[].[Tags[?Key==`Name`].Value | [0], InstanceId, PrivateIpAddress, KeyName]' --output text)
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# Provides that list to the user in concise, readable format
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echo "Here are the instances on this AWS account:"
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echo "$instances"
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echo ""
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# Prompt the user whether they would like to run updates on that list
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read -p "Would you like to run updates on these instances? (y/n): " answer
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if [[ $answer == "y" ]]; then
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# Loop over the instances and prompt the user whether to perform the updates
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for instance in $instances; do
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name=$(echo $instance | awk '{print $1}')
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id=$(echo $instance | awk '{print $2}')
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private_ip=$(echo $instance | awk '{print $3}')
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key_name=$(echo $instance | awk '{print $4}')
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read -p "Do you want to update $name ($private_ip)? (y/n): " update_answer
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if [[ $update_answer == "y" ]]; then
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# Use the private IP of the instance and Key Pair name to log in via ssh and perform the security update
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ssh -i $key_name.pem ec2-user@$private_ip "sudo yum check-updates --security"
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# Prompt the user to confirm before continuing
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read -p "Review the above list. Are you sure you want to update $name ($private_ip)? (y/n): " review_answer
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if [[ $review_answer == "y" ]]; then
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ssh -i $key_name.pem ec2-user@$private_ip "sudo yum update --security"
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fi
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fi
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done
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fi
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echo "Done."
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# Same script but uses the public DNS record of the instance to access.
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#
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# Gather a list of AWS Instances containing their name, id, public IPv4 DNS, and Key Pair name
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# instances=$(aws ec2 describe-instances --query 'Reservations[].Instances[].[Tags[?Key==`Name`].Value | [0], InstanceId, PublicDnsName, KeyName]' --output text)
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# # Provides that list to the user in concise, readable format
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# echo "Here are the instances on this AWS account:"
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# echo "$instances"
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# echo ""
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# # Prompt the user whether they would like to run updates on that list
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# read -p "Would you like to run updates on these instances? (y/n): " answer
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# if [[ $answer == "y" ]]; then
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# # Loop over the instances and prompt the user whether to perform the updates
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# for instance in $instances; do
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# name=$(echo $instance | awk '{print $1}')
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# id=$(echo $instance | awk '{print $2}')
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# public_dns=$(echo $instance | awk '{print $3}')
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# key_name=$(echo $instance | awk '{print $4}')
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# read -p "Do you want to update $name ($public_dns)? (y/n): " update_answer
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# if [[ $update_answer == "y" ]]; then
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# # Use the public IPv4 DNS of the instance and Key Pair name to log in via ssh and perform the security update
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# ssh -i $key_name.pem ec2-user@$public_dns "sudo yum check-updates --security"
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# # Prompt the user to confirm before continuing
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# read -p "Review the above list. Are you sure you want to update $name ($public_dns)? (y/n): " review_answer
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# if [[ $review_answer == "y" ]]; then
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# ssh -i $key_name.pem ec2-user@$public_dns "sudo yum update --security"
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# fi
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# fi
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# done
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# fi
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# echo "Done."
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