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