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