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