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change-ip-by-eip.sh
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| #!/bin/zsh | |
| InstanceId="$1" | |
| # allocation id of current ip | |
| OldAllocationId=$(aws ec2 describe-addresses | | |
| jq -r '.Addresses[] | select(.InstanceId == "'$InstanceId'") | .AllocationId') | |
| # create address | |
| NewAllocationId=$(aws ec2 allocate-address | jq -r '.AllocationId') | |
| echo new:$NewAllocationId old:$OldAllocationId | |
| aws ec2 associate-address --instance-id $InstanceId --allocation-id $NewAllocationId | |
| aws ec2 release-address --allocation-id $OldAllocationId |
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