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