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