Install HP Elitedesk 800 G3 for HA

[swa72]

follow https://smarthomescene.com/guides/how-to-install-home-assistant-on-proxmox-the-easy-way/

• go into boot menu (F9) and select from USB stick
  • go to BIOS and disable secure boot (hit F10 after HP logo), legacy boot enabled, Virtualization enables
  • see pics
• add password to keepass
• use ethernet connection for the time being
• after that use https://192.168.178.136:8006/, "root" and password to login
• change name to "elitedesk", make IP address fixed
• install HA VM with script
  • new instance name "homeassistant" on http://192.168.178.137:8123
  • inside proxmox vm name is homeassistant-vm
  • inside HA reports as homeassistant.local
  • inside fritz reports as homeassistant
• disable add-ons
• create backup
• download backup
• shutdown old RPI
• fireup VM
• restore in VM
• switch IPs in fritzbox (pain in the ass), reboot fritzbox in between
• no need to DMZ the ha vm (i dunno why?)
• on some if not all devices that use MQTT, add username and password again (smlreader, watermain, ...)
• remove "Raspberry Pi Power Supply Checker"
• (Optional) Set CPU scaling governor
  • from 11W down to 7-8W
• ethernet -> wifi we stay on ethernet
• set static up address (see https://smarthomescene.com/guides/how-to-install-home-assistant-on-proxmox-the-easy-way/)
  • the ip address of HA is set to dynamic, the fritzbox is set to fixed
• not done yet / old stuff
  • old ha name "homeassistant-eth" and IP 192.168.178.83