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