joplin-notes/joplin notion extension/linux/unattended install of ubuntu server.md

unattended install of ubuntu server Video reference https://www.youtube.com/watch?v=DtXZ6BMaKbA https://files.catbox.moe/fztpyo.mp4

• Download iso from here: https://cdimage.ubuntu.com/releases/18.04.6/release/

• Copy autoinstall-user-data file from /var/log/installer from where ubuntu-live-server-23.... .iso is installed. Then create a directory say 'server_work'. Under it create a autoinstall-user-data and copy necessary things like

  #cloud-config
  autoinstall:
    identity:
  	hostname: tree
  	password: $6$oylcLD1tDk6UPHJf$xSwvFGR8314IlJBENXKKqAGbcHWuzPp7le3HRAzaSPg7I2vJk.pFEnMICyPOQwjJGjaPqejSEkPcyaG9T7kRW.
  	realname: tree
  	username: tree
    kernel:
  	package: linux-generic
    keyboard:
  	layout: us
  	toggle: null
  	variant: ''
    locale: en_US.UTF-8
    ssh:
  	allow-pw: true
  	authorized-keys: []
  	install-server: true
    updates: security
    version: 1
    shutdown: poweroff
  
  

• Now create directory 'source-files' and use this xorriso -osirrox on -indev ubuntu-23.10-live-server-amd64.iso --extract_boot_images source-files/bootpart -extract / source-files/

• Now go to source-files dir and create dir nocloud and go to nocloud and use cp ../../autoinstall-user-data user-data. Now create file named meta-data. Finally go to parent dir ie source-files.

• Now go to boot/grub and add write permission for root for file grub.cfg using chmod 644 grub.cfg

• Open grub.cfg. Create menuentry for automatic install like this After the line set menu_color_highlight=black/light-gray add this

  menuentry "Autoinstall Ubuntu Server" {
    	set gfxpayload=keep
    	linux /casper/vmlinuz quiet autoinstall ds=nocloud\;s=/cdrom/nocloud/ ---
    	initrd /casper/initrd
  }
  
  

  and set timeout=5 instead of 30

• Go to source files directory. Now use this xorriso -as mkisofs -r -V "ubuntu-autoinstall" -J -boot-load-size 4 -boot-info-table -input-charset utf-8 -eltorito-alt-boot -b bootpart/eltorito_img1_bios.img -no-emul-boot -o ../installer.iso .

• ssh sudo nano /etc/ssh/sshd_config Change port if desired

  ssh username@ip_address -p 22 . here ip_address can be local or public. 22 is default port When port forwarding externally, using pyblic ip address make sure to have some firewall like fail2ban or ufw In order to use GUI locally when opening through ssh. for eg: opening gui in A if remote machine is B. ssh -X userB@ip_address -p $DEFAULT_PORT