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