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