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