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