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