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