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