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