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