diff --git a/pkg/proxy/ipvs/proxier.go b/pkg/proxy/ipvs/proxier.go index 26a26bb30d8..a4ed4e292b1 100644 --- a/pkg/proxy/ipvs/proxier.go +++ b/pkg/proxy/ipvs/proxier.go @@ -598,11 +598,24 @@ func (handle *LinuxKernelHandler) GetModules() ([]string, error) { var bmods []string - // Find out loaded kernel modules. If this is a full static kernel it will thrown an error + // Find out loaded kernel modules. If this is a full static kernel it will try to verify if the module is compiled using /boot/config-KERNELVERSION modulesFile, err := os.Open("/proc/modules") + if err == os.ErrNotExist { + klog.Warningf("Failed to read file /proc/modules with error %v. Assuming this is a kernel without loadable modules support enabled", err) + kernelConfigFile := fmt.Sprintf("/boot/config-%s", kernelVersionStr) + kConfig, err := ioutil.ReadFile(kernelConfigFile) + if err != nil { + return nil, fmt.Errorf("Failed to read Kernel Config file %s with error %v", kernelConfigFile, err) + } + for _, module := range ipvsModules { + if match, _ := regexp.Match("CONFIG_"+strings.ToUpper(module)+"=y", kConfig); match { + bmods = append(bmods, module) + } + } + return bmods, nil + } if err != nil { - klog.Warningf("Failed to read file /proc/modules with error %v. Kube-proxy requires loadable modules support enabled in the kernel", err) - return nil, err + return nil, fmt.Errorf("Failed to read file /proc/modules with error %v", err) } mods, err := getFirstColumn(modulesFile)