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