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