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