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