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