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