How to set polish keyboard by vconsole?

To file /etc/vconsole.conf save content

KEYMAP=pl
FONT=Lat2-Terminus16
FONT_MAP=8859-2

Or using one line command

echo -e "KEYMAP=pl\nFONT=Lat2-Terminus16\nFONT_MAP=8859-2" | sudo tee /etc/vconsole.conf > /dev/null

Finally

setxkbmap pl

and to persist add

exec_always "setxkbmap pl"

in ~/.config/i3/config