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