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