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