awscli, jq が利用できることが前提です。
以下のようなシェルスクリプトを組むだけで、特定のインスタンスのインスタンスタイプを変更できます。
(ついでに EIP の付与も)
| #!/bin/sh | |
| AWS_PROFILE='YOUR aws-cli PROFILE HERE' | |
| INSTANCE_ID='YOUR INSTANCE ID HERE' | |
| INSTANCE_TYPE='YOUR INSTANCE TYPE HERE' | |
| PUBLIC_IP='YOUR INSTANCE EIP HERE' | |
| while : | |
| do | |
| EC2_STATE=`aws ec2 describe-instances –profile ${AWS_PROFILE} –instance-ids ${INSTANCE_ID} | jq -r '.Reservations [] .Instances [] .State | .Name'` | |
| if [ $EC2_STATE = 'running' ]; then | |
| aws ec2 stop-instances –profile ${AWS_PROFILE} –instance-ids ${INSTANCE_ID} | |
| fi | |
| if [ $EC2_STATE = 'stopped' ]; then | |
| break | |
| fi | |
| echo "${INSTANCE_ID} : ${EC2_STATE}" | |
| sleep 10 | |
| done | |
| aws ec2 modify-instance-attribute –profile ${AWS_PROFILE} –instance-id ${INSTANCE_ID} –instance-type ${INSTANCE_TYPE} | |
| aws ec2 start-instances –profile ${AWS_PROFILE} –instance-ids ${INSTANCE_ID} | |
| while : | |
| do | |
| EC2_STATE=`aws ec2 describe-instances –profile ${AWS_PROFILE} –instance-ids ${INSTANCE_ID} | jq -r '.Reservations [] .Instances [] .State | .Name'` | |
| if [ $EC2_STATE = 'running' ]; then | |
| break | |
| fi | |
| echo "${INSTANCE_ID} : ${EC2_STATE}" | |
| sleep 10 | |
| done | |
| EC2_EIP=`aws ec2 describe-instances –profile ${AWS_PROFILE} –instance-ids ${INSTANCE_ID} | jq -r '.Reservations [] .Instances [] .PublicIpAddress'` | |
| if [ $EC2_EIP != $PUBLIC_IP ]; then | |
| aws ec2 associate-address –profile ${AWS_PROFILE} –instance-id ${INSTANCE_ID} –public-ip ${PUBLIC_IP} | |
| fi |
