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