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