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