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