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