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