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