docker 리눅스설정 libvirt-vagrant localGPT ovs kubeadm nvcc vagrant-libvirt 도커 yt-dlp jaeger-ceph bpf_trace_printk x509 bind9 ovpn libvirt uprobe dns BPF net-scripts ubuntu vagrant klosedstack ceph nvidia-smi 도커 레지스트리 openvSwitch ebpf ceph-osd 쿠버네티스 인증서