kawanerio@UbuntuStudio10:~$ ssh ec2-user@ec2-12-144-24-48.ap-northeast-1.compute.amazonaws.com -i /home/kawanerio/.ssh/key.pem
The authenticity of host 'ec2-12-144-24-48.ap-northeast-1.compute.amazonaws.com (2007:7700:0:1a:0:1:10a9:15b6)' can't be established.
ECDSA key fingerprint is SHA256:8Ru4BcxxtSuTn+j5BYbixW2tYxGh/EwLOXj/XaNEEzU.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added 'ec2-12-144-24-48.ap-northeast-1.compute.amazonaws.com,2007:7700:0:1a:0:1:10a9:15b6' (ECDSA) to the list of known hosts.
Load key "/home/kawanerio/.ssh/key.pem": Permission denied
ec2-user@ec2-12-144-24-48.ap-northeast-1.compute.amazonaws.com: Permission denied (publickey).
うーんうーん・・・