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