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