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