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