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