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