Setup Raspberry Pi 3 Model B+ with Ubuntu server and SSH over wifi

#raspberrypi #linux #ubuntu #cloudinit

Some things to say first:

At moment of testing the commands and writing this, I am using a ubuntu 18.04.3.
I don't have a Ethernet cable ¯\_㋡_/¯
My raspberry is the 3 Model B+ and my sdcard is a SAMSUNG EVO Select microSDXC 128 GB
This is my first post (treating it more like a "shared note") on dev.to community 🎉

Download the ubuntu image 18.04.3-preinstalled-server-arm64+raspi3.img.xz (link taken found here)
Flash the sdcard using balenaEtcher

sudo nano /media/wesley/writable/etc/netplan/50-cloud-init.yaml
It should contain:

network:
    version: 2
    ethernets:
        eth0:
            optional: true
            dhcp4: true
    wifis:
        wlan0:
            optional: true
            access-points:
                "YOUR-SSID-NAME":
                    password: "YOUR-NETWORK-PASSWORD"
            dhcp4: true

Make sure to have navigated to writable partition, otherwise nano will complain the folder does not exist.

sudo nano /media/wesley/writable/etc/cloud/cloud.cfg

Should be like this:

# The top level settings are used as module
# and system configuration.

# A set of users which may be applied and/or used by various modules
# when a 'default' entry is found it will reference the 'default_user'
# from the distro configuration specified below
users:
   - default
# If this is set, 'root' will not be able to ssh in and they
# will get a message to login instead as the default $user
disable_root: false

# This will cause the set+update hostname module to not operate (if true)
preserve_hostname: false
hostname: YOUR-RASPBERRYPI-NAME

# Example datasource config
# datasource:
#    Ec2:
#      metadata_urls: [ 'blah.com' ]
#      timeout: 5 # (defaults to 50 seconds)
#      max_wait: 10 # (defaults to 120 seconds)

# The modules that run in the 'init' stage
cloud_init_modules:
 - migrator
 - seed_random
 - bootcmd
 - write-files
 - growpart
 - resizefs
 - disk_setup
 - mounts
 - set_hostname
 - update_hostname
 - update_etc_hosts
 - ca-certs
 - rsyslog
 - users-groups
 - ssh

# The modules that run in the 'config' stage
cloud_config_modules:
# Emit the cloud config ready event
# this can be used by upstart jobs for 'start on cloud-config'.
 - emit_upstart
 - snap
 - snap_config  # DEPRECATED- Drop in version 18.2
 - ssh-import-id
 - locale
 - set-passwords
 - grub-dpkg
 - apt-pipelining
 - apt-configure
 - ubuntu-advantage
 - ntp
 - timezone
 - disable-ec2-metadata
 - runcmd
 - byobu

# The modules that run in the 'final' stage
cloud_final_modules:
 - snappy  # DEPRECATED- Drop in version 18.2
 - package-update-upgrade-install
 - fan
 - landscape
 - lxd
 - ubuntu-drivers
 - puppet
 - chef
 - mcollective
 - salt-minion
 - rightscale_userdata
 - scripts-vendor
 - scripts-per-once
 - scripts-per-boot
 - scripts-per-instance
 - scripts-user
 - ssh-authkey-fingerprints
 - keys-to-console
 - phone-home
 - final-message
 - power-state-change

# System and/or distro specific settings
# (not accessible to handlers/transforms)
system_info:
   # This will affect which distro class gets used
   distro: ubuntu
   # Default user name + that default users groups (if added/used)
   default_user:
     name: pi
     lock_passwd: True
     gecos: Pi
     groups: [adm, audio, cdrom, dialout, dip, floppy, lxd, netdev, plugdev, sudo, video]
     sudo: ["ALL=(ALL) NOPASSWD:ALL"]
     shell: /bin/bash
     ssh_authorized_keys:
       - "CONTENT-OF-YOUR-SSH-PUB-KEY-HERE"
   # Automatically discover the best ntp_client
   ntp_client: auto
   # Other config here will be given to the distro class and/or path classes
   paths:
      cloud_dir: /var/lib/cloud/
      templates_dir: /etc/cloud/templates/
      upstart_dir: /etc/init/
   package_mirrors:
     - arches: [i386, amd64]
       failsafe:
         primary: http://archive.ubuntu.com/ubuntu
         security: http://security.ubuntu.com/ubuntu
       search:
         primary:
           - http://%(ec2_region)s.ec2.archive.ubuntu.com/ubuntu/
           - http://%(availability_zone)s.clouds.archive.ubuntu.com/ubuntu/
           - http://%(region)s.clouds.archive.ubuntu.com/ubuntu/
         security: []
     - arches: [arm64, armel, armhf]
       failsafe:
         primary: http://ports.ubuntu.com/ubuntu-ports
         security: http://ports.ubuntu.com/ubuntu-ports
       search:
         primary:
           - http://%(ec2_region)s.ec2.ports.ubuntu.com/ubuntu-ports/
           - http://%(availability_zone)s.clouds.ports.ubuntu.com/ubuntu-ports/
           - http://%(region)s.clouds.ports.ubuntu.com/ubuntu-ports/
         security: []
     - arches: [default]
       failsafe:
         primary: http://ports.ubuntu.com/ubuntu-ports
         security: http://ports.ubuntu.com/ubuntu-ports
   ssh_svcname: ssh