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