(macOS)[Raspberrypi] ubuntu server 20.04 LTS 부팅, wifi 설정, ssh 접속

INTRO

rasberrypi 3 B+(64bit 지원)

balena Etcher(macOS 용 이미지 굽기) : https://www.balena.io/etcher/?ref=etcher_footer

 

 

ubuntu server 20.04.3 LTS(Long Term Support) : https://ubuntu.com/download/raspberry-pi

wifi 설정 및 ssh 접속

 

balena Etcher
ubuntu 이미지 flash 화면

 

R-Pi(Raspberry Pi) 설치 전 network setting 

SD-card : system-boot 내 network-config 파일 수정

주의 : "Your-SSID"에 wifi-ssid를 따옴표 안에 넣는다. 콜론(:) 옆에 작성하는게 아님

          "Your-PW"에 wifi 암호를 따옴표 안에 입력.

network-config
version: 2
ethernets:
  eth0:
    dhcp4: true
    optional: true
wifis:
  wlan0:
    dhcp4: true
    optional: true
    access-points:
      "Your-SSID":  
        password: "SSID-PW"

설치 완료 후 login ID/PW는 ubuntu/ubuntu, incorrect 후 진행 안될 때 재부팅 실시

login ID/PW 입력 후 현재암호(current....) ubuntu 입력 후 새암호/확인 반복 후 ubuntu/Your-New-PW로 로그인

 

ssh 접속 : (ubuntu)는 R-Pi server, (macOS)는 macOS terminal

(ubuntu)$ sudo apt-get install openssh-server

(macOS)$ ssh ubuntu@Your-IP
ubuntu@Your-IP's password: Your-RPI-PW
Welcome to Ubuntu 20.04.3 LTS (GNU/Linux 5.4.0-1042-raspi aarch64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  System information as of Sat Jan 15 09:53:15 UTC 2022

  System load:  0.04               Temperature:            52.6 C
  Usage of /:   15.6% of 14.38GB   Processes:              145
  Memory usage: 31%                Users logged in:        1
  Swap usage:   0%                 IPv4 address for wlan0: Your-IP

 * Super-optimized for small spaces - read how we shrank the memory
   footprint of MicroK8s to make it the smallest full K8s around.

   https://ubuntu.com/blog/microk8s-memory-optimisation

74 updates can be applied immediately.
38 of these updates are standard security updates.
To see these additional updates run: apt list --upgradable

Last login: Sat Jan 15 09:27:28 2022 from Your-macOS-IP

 

macOS terminal ssh 접속 후... 

ubuntu@ubuntu:~$

 

 

참고 : net-config 사전 설정에서 network 설정 안될 때 /etc/netplan/50-cloud-init.yaml 에서 설정

# This file is generated from information provided by the datasource.  Changes
# to it will not persist across an instance reboot.  To disable cloud-init's
# network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
network:
    ethernets:
        eth0:
            dhcp4: true
            optional: true
    version: 2
    wifis:
        wlan0:
            access-points:
                "Your-SSID":
                    password: "SSID-PW"