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