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