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