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