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