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