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