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