머가필요해

$ sudo apt-get purge cloud-init

$ ssh chani@192.168.100.105 -p 122

ssh_exchange_identification: Connection closed by remote host

$ ssh chani@192.168.100.105 -p 22

$ sudo nano /etc/ssh/sshd_config

Port 22

Port 122

$ sudo nano /etc/services

ssh             122/tcp                         # SSH Remote Login Protocol (by whatwant)

$ sudo service ssh restart

$ sudo netstat -anlp | grep sshd

tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1668/sshd

tcp        0      0 0.0.0.0:122             0.0.0.0:*               LISTEN      1668/sshd

$ ssh chani@192.168.100.105 -p 122

Success !!

$ sudo apt install virtualbox-guest-dkms linux-headers-virtual

$ sudo mkdir -p /media/cdrom

$ sudo mount /dev/cdrom /media/cdrom

$ cd /media/cdrom

$ sudo ./VBoxLinuxAdditions.run

$ sudo apt-get install language-pack-ko

$ sudo locale-gen ko_KR.UTF-8

$ sudo dpkg-reconfigure locales

$ sudo update-locale LANG=ko_KR.UTF-8 LC_MESSAGES=POSIX

$ sudo timedatectl

$ sudo timedatectl list-timezones | grep Seoul

$ sudo timedatectl set-timezone Asia/Seoul

$ sudo timedatectl

$ date

$ nano ~/.nanorc

set tabsize 4

set tabstospaces

$ sudo apt-get install ntpdate

$ sudo ntpdate time.windows.com

$ sudo dpkg-reconfigure cloud-init

제일 하단의 None 항목 빼고 나머지 전부 선택을 해제

$ sudo apt-get purge cloud-init

$ sudo rm -rf /etc/cloud/

$ sudo rm -rf /var/lib/cloud/

또는,

$ sudo mv /etc/cloud /srv/remove/cloud-init/etc-cloud

$ sudo mv /var/lib/cloud/ /srv/remove/cloud-init/var-lib-cloud

https://download.docker.com/linux/ubuntu/dists/xenial/pool/stable/amd64/

$ wget https://download.docker.com/linux/ubuntu/dists/xenial/pool/stable/amd64/containerd.io_1.2.6-3_amd64.deb

$ wget https://download.docker.com/linux/ubuntu/dists/xenial/pool/stable/amd64/docker-ce-cli_18.09.7~3-0~ubuntu-xenial_amd64.deb

$ wget https://download.docker.com/linux/ubuntu/dists/xenial/pool/stable/amd64/docker-ce_18.09.7~3-0~ubuntu-xenial_amd64.deb

$ wget https://download.docker.com/linux/ubuntu/dists/bionic/pool/stable/amd64/containerd.io_1.2.6-3_amd64.deb

$ wget https://download.docker.com/linux/ubuntu/dists/bionic/pool/stable/amd64/docker-ce-cli_18.09.7~3-0~ubuntu-bionic_amd64.deb

$ wget https://download.docker.com/linux/ubuntu/dists/bionic/pool/stable/amd64/docker-ce_18.09.7~3-0~ubuntu-bionic_amd64.deb

$ sudo dpkg --install ./containerd.io_1.2.6-3_amd64.deb

$ sudo dpkg --install ./docker-ce-cli_18.09.7~3-0~ubuntu-xenial_amd64.deb

$ sudo dpkg --install ./docker-ce_18.09.7~3-0~ubuntu-xenial_amd64.deb

$ sudo dpkg --install ./containerd.io_1.2.6-3_amd64.deb

$ sudo dpkg --install ./docker-ce-cli_18.09.7~3-0~ubuntu-bionic_amd64.deb

$ sudo dpkg --install ./docker-ce_18.09.7~3-0~ubuntu-bionic_amd64.deb

$ sudo docker run hello-world

Unable to find image 'hello-world:latest' locally

latest: Pulling from library/hello-world

1b930d010525: Pull complete 

Digest: sha256:41a65640635299bab090f783209c1e3a3f11934cf7756b09cb2f1e02147c6ed8

Status: Downloaded newer image for hello-world:latest

Hello from Docker!

This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:

 1. The Docker client contacted the Docker daemon.

 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.

    (amd64)

 3. The Docker daemon created a new container from that image which runs the

    executable that produces the output you are currently reading.

 4. The Docker daemon streamed that output to the Docker client, which sent it

    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:

 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:

 https://hub.docker.com/

For more examples and ideas, visit:

 https://docs.docker.com/get-started/