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