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APU2

Apu2 is an evolution of the apu board with a cooler running quad core CPU, more robust Intel NICs, and lower total solution cost.

Apu2 board

Mac address:

  • black:
    • wifi: 04F021457CA4
    • ..
  • blue:
    • wifi: 04:f0:21:45:7c:a2
    • enp2s0: 00:0d:b9:4e:77:84
    • enp3s0: 00:0d:b9:4e:77:85
    • enp4s0: 00:0d:b9:4e:77:86
  • red:
    • wifi: 04F021457CA5

Step 1: Install a linux distro on apu2 ( Offical documentation )

Debian (work)

Guida utilizzata

  • Boot the USB on apu2
  • Press down arrow until appears on the screen Display help screens; type 'menu' at boot prompt to return to this menu" press "enter
  • Write ¨menu¨ and press enter
  • Press F6
  • after boot: prompt write install console=ttyS0,115200n8 and press enter
  • wait (about 30 seconds)

Ubuntu (work)

Must download Ubuntu Alternate (ubuntu-18.04.2-server-amd64, not live-server)

Once at the boot: prompt type:

install vga=off console=ttyS0,115200n8

Ubuntu server 18.04 LTS (not working)

Install the .iso on the USB with Unetbootin (iso mode).

Changing file /boot/grub/boot.cfg and replacing vga=... with ´console=ttyS0,115200n8´, in theory should work, but it doesn´t.

The file boot.cfg exists only using ISO MODE.

Step 2: Automation install of ubuntu/debian

Preseeding file

Both command and files are the same for ubuntu and debian.

  • Generate the preseed.cfg file. We have 2 different options:

    1. Automatic generate:Used this (not tested) sudo apt-get install debconf-utils sudo debconf-get-selections --installer
    2. Modify the example founded in the documentation

  • Turn on the apu2, once at prompt boot:, add to command install vga.. console=.. what´s next:

The best theory situation should be: install vga=off console=ttyS0m115200n8 url=172.28.48.21:5000/preseed.cfg

But it doesn work properly, and still ask:

  • language and country. Solution: add paramater locale=en_US.UTF-8
  • hostname, caused by a bug. Solutions:
    • add priority=critical
    • add hostanme=ubuntu
  • interface, caused by a bug. Solution
    • add parameter interface=enp2s0
    • or interface=auto after url=... but it´s not really auto, it however takes the first interface

So, the final command is: install vga=off console=ttyS0,115200n8 locale=en_US.UTF-8 url=172.28.48.21:5000/preseed.cfg priority=critical interface=enp2s0

SSH

Script finito The preseed file should run a script that: - add to file ~/.ssh/authorized_keys a public keys - change value of PubkeyAuthentication and PasswordAuthentication: - change value: sed 's/PermitRootLogin yes/PermitRootLogin no/' /etc/ssh/sshd_config > temp.txt - uncomment and change value: sed 's/#?(PubkeyAuthentication\s*).*$/\1 yes/' /etc/ssh/sshd_config

mv -f temp.txt /etc/ssh/sshd_config

echo ¨chiave pubblica¨ >> ~/.ssh/authorized_keys

Per far partire lo script dal preseeding: d-i preseed/run string ssh_script.sh : da problemi, l´installazione si interrompe dicendo di non poter scaricare né il file né il preseeding `d-i preseed/late_command string in-target wget -P /tmp/ 172.28.48.21:5000/ssh_script.sh; in-target chmod $+x /tmp/ssh_script.sh; in-target /tmp/ssh_script.sh``

Ansible

/etc/ansible/hosts: list of my hosts grouped by a name in brackets (eg. [test-servers]) Writing a playbook to install apache:

Appunti:

  • installre python 3
  • installare virtualenv py3
  • installare ansible 2.7 dentro il virtualenv

nel vritualenv:

  • installare client openstack

  • installare dipendenze per ansible con openstack

  • scaricare file openrc da divine

  • caricare le credenziali di openrc nella shell

  • verificare che funzioni (openstack network list)

  • caricare le credenziali di openrc in ansible

creare playbook ansible che crea una nuov vm

ansible all -m ping

installazione webserver copia degli script