create-instance-by-eip

create-instance-by-eip.sh

#!/bin/zsh

AMI="ami-xxxxxxx" # Official CentOS 7.0 AMI in ap-northeast-1 region
ALOCID="eipalloc-xxxxxxx" # Allocating ip address
SIZE="m3.large"
KEYNAME="jobfind"
SEC_GROUP="default"

InstanceId=$(aws ec2 run-instances \
                 --count 1 \
                 --image-id $AMI \
                 --instance-type $SIZE \
                 --key-name $KEYNAME \
                 --security-groups $SEC_GROUP |
                    jq -r '.Instances[].InstanceId')

# We have to wait until instance state changes running
aws ec2 wait instance-running --instance-ids $InstanceId

aws ec2 associate-address \
    --instance-id $InstanceId \
    --allocation-id $ALOCID

IP=$(aws ec2 describe-addresses |
            jq -r '.Addresses[] | select(.AllocationId == "'$ALOCID'") | .PublicIp')

# ssh-keygen -R $IP
# ssh-keygen -R \[$IP\]:7822