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