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