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