Para instalar o k3os usando o takeover baixe o utilitario no repositorio do k3os
wget https://raw.githubusercontent.com/rancher/k3os/master/install.sh && \
chmod +x ./install.sh && \
sudo ./install.sh --takeover --debug --tty ttyS0 \
--config https://gist.githubusercontent.com/llucasshenrique/c615fc25eafec87399865ea6fcff6d9b/raw/d6ec3dffce14738e119e59543b7409922fcfb6f0/omni-orc-control-init.yaml \
--no-format /dev/sda1 \
https://github.com/rancher/k3os/releases/download/v0.20.7-k3s1r0/k3os-amd64.iso
wget https://raw.githubusercontent.com/rancher/k3os/master/install.sh && \
chmod +x ./install.sh && \
sudo ./install.sh --takeover --debug --tty ttyS0 \
--config https://gist.githubusercontent.com/llucasshenrique/c615fc25eafec87399865ea6fcff6d9b/raw/d6ec3dffce14738e119e59543b7409922fcfb6f0/omni-orc-agent.yaml \
--no-format /dev/sda1 \
https://github.com/rancher/k3os/releases/download/v0.20.7-k3s1r0/k3os-arm64.iso