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