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