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