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