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