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