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