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