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