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