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