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