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