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