The experimental FOSSASIA video recording setup
Looking for the video recorder’s guide? The collaborative version is on Google Docs and a PDF is available in this repository.
There is also the video equipment sheet
For the recording machines, get a fresh copy of Debian, and install it with the following settings:
If a GNOME Desktop and SSH daemon is already installed, a reinstall is not required but recommended.
To set up the overlay WireGuard network to manage machines everywhere, a server needs to be set up. wireguard-negotiator is a tool written to automate some of the key exchange, that must be run on a publicly accessible server as root:
# Create WireGuard interface
ip link add dev wg1 type wireguard
ip addr add fd11:f055:a514:0000::1/64 dev wg1
# Configure the interface once. Assumes the configuration file exists
# See WireGuard docs on how to write this configuraion file
wg setconf wg1 /etc/wireguard/wg1.conf
# Bring up the interface
ip link set wg1 up
wireguard-negotiator server -i wg1 -e [hostname] -l :8080 -I -B
On every recording machine, the client can be easily configured like so:
# For now, we have to manually install WireGuard
echo "deb http://deb.debian.org/debian/ unstable main" | sudo tee /etc/apt/sources.list.d/unstable.list
printf 'Package: *\nPin: release a=unstable\nPin-Priority: 90\n' | sudo tee /etc/apt/preferences.d/limit-unstable
sudo apt update
sudo apt install wireguard
# TODO: validate this section
sudo systemctl enable --now systemd-networkd
wget -O wgn http://[hostname]:8080
chmod +x wgn
sudo ./wgn request -s http://[hostname]:8080
To specify the room for a specific host, do the following:
echo the_room_id > ~opentech/room_id
echo teh_room_type > ~opentech/room_type
# Example for Event Hall 2-1:
echo EH2 > ~opentech/room_type
echo EH2-1 > ~opentech/room_id
See the Video Equipment Google Sheet for the specific IDs. To get edit access, DM @serverwentdown on Telegram.
This step is optional. This and the following steps should be done for every change in room or setup of the laptop.
Export all hosts on the overlay network from WireGuard configuration:
wireguard-negotiator dump > wireguard.list
This list of IPs can be exported into our Ansible hosts format as such:
go run event-generate.go opentech < wireguard.list > event
The script event-fetch-generate.sh does the exporting and generating of the event inventory.
Before running any Playbooks, switch to SSH authentication:
ansible-playbook -Kf 8 -kc paramiko -i event ssh-key.yml
ansible -Kf 8 -kc paramiko -b -i event all -a reboot
Now, plays can be run like so:
ansible-playbook -Kf 4 -i [inventory] [playbook]
# Example:
ansible-playbook -Kf 4 -i event recorders.yml
ansible-playbook -Kf 4 -i event recorders-stop.yml
ansible-playbook -Kf 4 -i event reboot.yml
ansible-playbook -Kf 4 -i event upgrade.yml
And run commands like so:
ansible -Kf 8 -b -i event all -a 'apt install firmware-iwlwifi'