출처 : http://lab4109.blogspot.kr/2013/10/aws-ec2-root.html
AWS EC2의 ROOT 계정 활성화, 패스워드 설정, 패스워드로 로그인 활성화
1. root password 설정
1 2 3 4 | ubuntu@ip-172-31-24-62:~$ sudo passwd root Enter new UNIX password: Retype new UNIX password: passwd : password updated successfully |
2. password 기반의 로그인을 활성화하기
1 | ubuntu@ip-172-31-24-62:~$ sudo vi /etc/ssh/sshd_config |
1 2 | # Change to no to disable tunnelled clear text passwords PasswordAuthentication no |
위의 no를 yes로. 그리고 저장. 그럼 된다.
3. key pair로 로그인할 때를 위해서 root로 ubuntu user의 것을 복사.
1 2 3 4 | ubuntu@ip-172-31-24-62:~$ sudo mkdir /root/ . ssh mkdir : cannot create directory ‘ /root/ . ssh ’: File exists ubuntu@ip-172-31-24-62:~$ sudo cp /home/ubuntu/ . ssh /authorized_keys /root/ . ssh / ubuntu@ip-172-31-24-62:~$ |
이미 있어서 그냥 복사만 했음.
마지막으로 SSHd 설정을 리로드하기.
1 | ubuntu@ip-172-31-24-62:~$ sudo reload ssh |
그럼 테스트, root로 key 없이 접속해 보기.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | ~ /Project/awskey > ssh root@54.238.207.180 root@54.238.207.180's password: Welcome to Ubuntu 13.10 (GNU /Linux 3.11.0-12-generic x86_64) * Documentation: https: //help .ubuntu.com/ System information as of Thu Oct 31 06:56:20 UTC 2013 System load: 0.0 Processes: 66 Usage of /: 9.5% of 7.75GB Users logged in : 0 Memory usage: 8% IP address for eth0: 172.31.24.62 Swap usage: 0% Graph this data and manage this system at: https: //landscape .canonical.com/ Get cloud support with Ubuntu Advantage Cloud Guest: http: //www .ubuntu.com /business/services/cloud Use Juju to deploy your cloud instances and workloads: https: //juju .ubuntu.com/ #cloud-saucy 0 packages can be updated. 0 updates are security updates. The programs included with the Ubuntu system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/ * /copyright . Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law. root@ip-172-31-24-62:~ # |
key pair를 이용해 root로 접속하기
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | ~ /Project/awskey > ssh -i up_db_server.pem root@54.238.207.180 Welcome to Ubuntu 13.10 (GNU /Linux 3.11.0-12-generic x86_64) * Documentation: https: //help .ubuntu.com/ System information as of Thu Oct 31 08:10:46 UTC 2013 System load: 0.0 Processes: 69 Usage of /: 12.0% of 7.75GB Users logged in : 0 Memory usage: 26% IP address for eth0: 172.31.24.62 Swap usage: 0% Graph this data and manage this system at: https: //landscape .canonical.com/ Get cloud support with Ubuntu Advantage Cloud Guest: http: //www .ubuntu.com /business/services/cloud Use Juju to deploy your cloud instances and workloads: https: //juju .ubuntu.com/ #cloud-saucy Last login: Thu Oct 31 08:10:47 2013 from 211.106.111.78 root@ip-172-31-24-62:~ # |
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