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