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