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