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