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