apache:x:??:??:Apache:/usr/share/httpd:/sbin/nologin

# sudo -u apache  ssh {USER}@127.0.0.1

Could not create directory '/usr/share/httpd/.ssh'.

The authenticity of host '127.0.0.1 (127.0.0.1)' can't be established.

ECDSA key fingerprint is SHA256:K?????????X5K5mXX2???????+EDPZeM.

ECDSA key fingerprint is MD5:??:d5:??:f4:??:??:??:70:??:??:5c:de:22:a3:60:ec.

Are you sure you want to continue connecting (yes/no)?

# sudo -u apache  ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null {USER}@127.0.0.1

Could not create directory '/usr/share/httpd/.ssh'.                                                       <-- 이건 stderr

Warning: Permanently added '127.0.0.1' (ECDSA) to the list of known hosts.           <-- 이건 stderr

{USER}@127.0.0.1's password:

* ssh 비번을 입력하는 이슈가 있으니깐 웹에서 실행할 경우

-i {privatekey경로}

추가해서 비번 입력 없이 진행하자.