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