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