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