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