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