mirror of
https://github.com/k3s-io/kubernetes.git
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c85083589c
Various parts of kube-proxy passed around a "hostname", but it is actually the name of the *node* kube-proxy is running on, which is not 100% guaranteed to be exactly the same as the hostname. Rename it everywhere to make it clearer that (a) it is definitely safe to use that name to refer to the Node, (b) it is not necessarily safe to use that name with DNS, etc.
888 lines
29 KiB
Go
888 lines
29 KiB
Go
//go:build linux
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// +build linux
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/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package app
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import (
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"context"
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"errors"
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"fmt"
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"net"
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"os"
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"path/filepath"
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"reflect"
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goruntime "runtime"
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"strings"
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"testing"
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"time"
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"github.com/google/go-cmp/cmp"
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"github.com/spf13/pflag"
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v1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/watch"
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clientsetfake "k8s.io/client-go/kubernetes/fake"
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clientgotesting "k8s.io/client-go/testing"
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proxyconfigapi "k8s.io/kubernetes/pkg/proxy/apis/config"
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proxyutil "k8s.io/kubernetes/pkg/proxy/util"
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"k8s.io/kubernetes/test/utils/ktesting"
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netutils "k8s.io/utils/net"
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"k8s.io/utils/ptr"
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)
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func Test_platformApplyDefaults(t *testing.T) {
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testCases := []struct {
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name string
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mode proxyconfigapi.ProxyMode
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expectedMode proxyconfigapi.ProxyMode
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detectLocal proxyconfigapi.LocalMode
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expectedDetectLocal proxyconfigapi.LocalMode
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}{
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{
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name: "defaults",
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mode: "",
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expectedMode: proxyconfigapi.ProxyModeIPTables,
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detectLocal: "",
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expectedDetectLocal: proxyconfigapi.LocalModeClusterCIDR,
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},
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{
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name: "explicit",
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mode: proxyconfigapi.ProxyModeIPTables,
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expectedMode: proxyconfigapi.ProxyModeIPTables,
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detectLocal: proxyconfigapi.LocalModeClusterCIDR,
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expectedDetectLocal: proxyconfigapi.LocalModeClusterCIDR,
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},
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{
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name: "override mode",
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mode: "ipvs",
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expectedMode: proxyconfigapi.ProxyModeIPVS,
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detectLocal: "",
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expectedDetectLocal: proxyconfigapi.LocalModeClusterCIDR,
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},
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{
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name: "override detect-local",
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mode: "",
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expectedMode: proxyconfigapi.ProxyModeIPTables,
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detectLocal: "NodeCIDR",
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expectedDetectLocal: proxyconfigapi.LocalModeNodeCIDR,
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},
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{
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name: "override both",
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mode: "ipvs",
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expectedMode: proxyconfigapi.ProxyModeIPVS,
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detectLocal: "NodeCIDR",
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expectedDetectLocal: proxyconfigapi.LocalModeNodeCIDR,
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},
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}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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options := NewOptions()
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config := &proxyconfigapi.KubeProxyConfiguration{
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Mode: tc.mode,
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DetectLocalMode: tc.detectLocal,
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}
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options.platformApplyDefaults(config)
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if config.Mode != tc.expectedMode {
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t.Fatalf("expected mode: %s, but got: %s", tc.expectedMode, config.Mode)
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}
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if config.DetectLocalMode != tc.expectedDetectLocal {
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t.Fatalf("expected detect-local: %s, but got: %s", tc.expectedDetectLocal, config.DetectLocalMode)
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}
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})
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}
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}
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func Test_getLocalDetectors(t *testing.T) {
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cases := []struct {
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name string
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config *proxyconfigapi.KubeProxyConfiguration
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primaryIPFamily v1.IPFamily
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nodePodCIDRs []string
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expected map[v1.IPFamily]proxyutil.LocalTrafficDetector
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}{
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// LocalModeClusterCIDR
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{
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name: "LocalModeClusterCIDR, single-stack IPv4 cluster",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeClusterCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"10.0.0.0/14"},
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},
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},
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primaryIPFamily: v1.IPv4Protocol,
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewDetectLocalByCIDR("10.0.0.0/14"),
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v1.IPv6Protocol: proxyutil.NewNoOpLocalDetector(),
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},
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},
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{
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name: "LocalModeClusterCIDR, single-stack IPv6 cluster",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeClusterCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"2002:0:0:1234::/64"},
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},
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},
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primaryIPFamily: v1.IPv6Protocol,
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewNoOpLocalDetector(),
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v1.IPv6Protocol: proxyutil.NewDetectLocalByCIDR("2002:0:0:1234::/64"),
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},
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},
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{
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name: "LocalModeClusterCIDR, single-stack IPv6 cluster with single-stack IPv4 config",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeClusterCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"10.0.0.0/14"},
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},
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},
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primaryIPFamily: v1.IPv6Protocol,
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// This will output a warning that there is no IPv6 CIDR but it
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// will still use the provided IPv4 CIDR for IPv4.
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewDetectLocalByCIDR("10.0.0.0/14"),
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v1.IPv6Protocol: proxyutil.NewNoOpLocalDetector(),
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},
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},
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{
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name: "LocalModeClusterCIDR, single-stack IPv4 cluster with single-stack IPv6 config",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeClusterCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"2002:0:0:1234::/64"},
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},
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},
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primaryIPFamily: v1.IPv4Protocol,
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// This will output a warning that there is no IPv4 CIDR but it
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// will still use the provided IPv6 CIDR for IPv6.
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewNoOpLocalDetector(),
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v1.IPv6Protocol: proxyutil.NewDetectLocalByCIDR("2002:0:0:1234::/64"),
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},
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},
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{
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name: "LocalModeClusterCIDR, dual-stack IPv4-primary cluster",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeClusterCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"10.0.0.0/14", "2002:0:0:1234::/64"},
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},
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},
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primaryIPFamily: v1.IPv4Protocol,
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewDetectLocalByCIDR("10.0.0.0/14"),
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v1.IPv6Protocol: proxyutil.NewDetectLocalByCIDR("2002:0:0:1234::/64"),
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},
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},
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{
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name: "LocalModeClusterCIDR, dual-stack IPv6-primary cluster",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeClusterCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"2002:0:0:1234::/64", "10.0.0.0/14"},
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},
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},
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primaryIPFamily: v1.IPv6Protocol,
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewDetectLocalByCIDR("10.0.0.0/14"),
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v1.IPv6Protocol: proxyutil.NewDetectLocalByCIDR("2002:0:0:1234::/64"),
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},
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},
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{
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name: "LocalModeClusterCIDR, IPv4-primary kube-proxy / IPv6-primary config",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeClusterCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"2002:0:0:1234::/64", "10.0.0.0/14"},
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},
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},
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primaryIPFamily: v1.IPv4Protocol,
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewDetectLocalByCIDR("10.0.0.0/14"),
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v1.IPv6Protocol: proxyutil.NewDetectLocalByCIDR("2002:0:0:1234::/64"),
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},
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},
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{
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name: "LocalModeClusterCIDR, no ClusterCIDR",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeClusterCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{""},
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},
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},
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primaryIPFamily: v1.IPv4Protocol,
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewNoOpLocalDetector(),
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v1.IPv6Protocol: proxyutil.NewNoOpLocalDetector(),
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},
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},
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// LocalModeNodeCIDR
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{
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name: "LocalModeNodeCIDR, single-stack IPv4 cluster",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeNodeCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"10.0.0.0/14"},
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},
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},
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primaryIPFamily: v1.IPv4Protocol,
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nodePodCIDRs: []string{"10.0.0.0/24"},
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewDetectLocalByCIDR("10.0.0.0/24"),
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v1.IPv6Protocol: proxyutil.NewNoOpLocalDetector(),
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},
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},
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{
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name: "LocalModeNodeCIDR, single-stack IPv6 cluster",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeNodeCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"2002:0:0:1234::/64"},
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},
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},
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primaryIPFamily: v1.IPv6Protocol,
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nodePodCIDRs: []string{"2002::1234:abcd:ffff:0:0/96"},
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewNoOpLocalDetector(),
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v1.IPv6Protocol: proxyutil.NewDetectLocalByCIDR("2002::1234:abcd:ffff:0:0/96"),
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},
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},
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{
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name: "LocalModeNodeCIDR, single-stack IPv6 cluster with single-stack IPv4 config",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeNodeCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"10.0.0.0/14"},
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},
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},
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primaryIPFamily: v1.IPv6Protocol,
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nodePodCIDRs: []string{"10.0.0.0/24"},
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// This will output a warning that there is no IPv6 CIDR but it
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// will still use the provided IPv4 CIDR for IPv4.
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewDetectLocalByCIDR("10.0.0.0/24"),
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v1.IPv6Protocol: proxyutil.NewNoOpLocalDetector(),
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},
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},
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{
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name: "LocalModeNodeCIDR, single-stack IPv4 cluster with single-stack IPv6 config",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeNodeCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"2002:0:0:1234::/64"},
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},
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},
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primaryIPFamily: v1.IPv4Protocol,
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nodePodCIDRs: []string{"2002::1234:abcd:ffff:0:0/96"},
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// This will output a warning that there is no IPv4 CIDR but it
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// will still use the provided IPv6 CIDR for IPv6.
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewNoOpLocalDetector(),
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v1.IPv6Protocol: proxyutil.NewDetectLocalByCIDR("2002::1234:abcd:ffff:0:0/96"),
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},
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},
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{
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name: "LocalModeNodeCIDR, dual-stack IPv4-primary cluster",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeNodeCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"10.0.0.0/14", "2002:0:0:1234::/64"},
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},
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},
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primaryIPFamily: v1.IPv4Protocol,
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nodePodCIDRs: []string{"10.0.0.0/24", "2002::1234:abcd:ffff:0:0/96"},
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewDetectLocalByCIDR("10.0.0.0/24"),
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v1.IPv6Protocol: proxyutil.NewDetectLocalByCIDR("2002::1234:abcd:ffff:0:0/96"),
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},
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},
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{
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name: "LocalModeNodeCIDR, dual-stack IPv6-primary cluster",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeNodeCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"2002:0:0:1234::/64", "10.0.0.0/14"},
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},
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},
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primaryIPFamily: v1.IPv6Protocol,
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nodePodCIDRs: []string{"2002::1234:abcd:ffff:0:0/96", "10.0.0.0/24"},
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewDetectLocalByCIDR("10.0.0.0/24"),
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v1.IPv6Protocol: proxyutil.NewDetectLocalByCIDR("2002::1234:abcd:ffff:0:0/96"),
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},
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},
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{
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name: "LocalModeNodeCIDR, IPv6-primary kube-proxy / IPv4-primary config",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeNodeCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"10.0.0.0/14", "2002:0:0:1234::/64"},
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},
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},
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primaryIPFamily: v1.IPv6Protocol,
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nodePodCIDRs: []string{"10.0.0.0/24", "2002::1234:abcd:ffff:0:0/96"},
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewDetectLocalByCIDR("10.0.0.0/24"),
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v1.IPv6Protocol: proxyutil.NewDetectLocalByCIDR("2002::1234:abcd:ffff:0:0/96"),
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},
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},
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{
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name: "LocalModeNodeCIDR, no PodCIDRs",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeNodeCIDR,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{""},
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},
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},
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primaryIPFamily: v1.IPv4Protocol,
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nodePodCIDRs: []string{},
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewNoOpLocalDetector(),
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v1.IPv6Protocol: proxyutil.NewNoOpLocalDetector(),
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},
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},
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// unknown mode
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{
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name: "unknown LocalMode",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalMode("abcd"),
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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ClusterCIDRs: []string{"10.0.0.0/14"},
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},
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},
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primaryIPFamily: v1.IPv4Protocol,
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewNoOpLocalDetector(),
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v1.IPv6Protocol: proxyutil.NewNoOpLocalDetector(),
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},
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},
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// LocalModeBridgeInterface
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{
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name: "LocalModeBridgeInterface",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeBridgeInterface,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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BridgeInterface: "eth",
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},
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},
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primaryIPFamily: v1.IPv4Protocol,
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewDetectLocalByBridgeInterface("eth"),
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v1.IPv6Protocol: proxyutil.NewDetectLocalByBridgeInterface("eth"),
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},
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},
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{
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name: "LocalModeBridgeInterface, strange bridge name",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeBridgeInterface,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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BridgeInterface: "1234567890123456789",
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},
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},
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primaryIPFamily: v1.IPv4Protocol,
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewDetectLocalByBridgeInterface("1234567890123456789"),
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v1.IPv6Protocol: proxyutil.NewDetectLocalByBridgeInterface("1234567890123456789"),
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},
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},
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// LocalModeInterfaceNamePrefix
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{
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name: "LocalModeInterfaceNamePrefix",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeInterfaceNamePrefix,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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InterfaceNamePrefix: "eth",
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},
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},
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primaryIPFamily: v1.IPv4Protocol,
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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v1.IPv4Protocol: proxyutil.NewDetectLocalByInterfaceNamePrefix("eth"),
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v1.IPv6Protocol: proxyutil.NewDetectLocalByInterfaceNamePrefix("eth"),
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},
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},
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{
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name: "LocalModeInterfaceNamePrefix, strange interface name",
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config: &proxyconfigapi.KubeProxyConfiguration{
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DetectLocalMode: proxyconfigapi.LocalModeInterfaceNamePrefix,
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DetectLocal: proxyconfigapi.DetectLocalConfiguration{
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InterfaceNamePrefix: "1234567890123456789",
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},
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},
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primaryIPFamily: v1.IPv4Protocol,
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expected: map[v1.IPFamily]proxyutil.LocalTrafficDetector{
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|
v1.IPv4Protocol: proxyutil.NewDetectLocalByInterfaceNamePrefix("1234567890123456789"),
|
|
v1.IPv6Protocol: proxyutil.NewDetectLocalByInterfaceNamePrefix("1234567890123456789"),
|
|
},
|
|
},
|
|
}
|
|
for _, c := range cases {
|
|
t.Run(c.name, func(t *testing.T) {
|
|
logger, _ := ktesting.NewTestContext(t)
|
|
r := getLocalDetectors(logger, c.primaryIPFamily, c.config, c.nodePodCIDRs)
|
|
if !reflect.DeepEqual(r, c.expected) {
|
|
t.Errorf("Unexpected detect-local implementation, expected: %q, got: %q", c.expected, r)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func makeNodeWithPodCIDRs(cidrs ...string) *v1.Node {
|
|
if len(cidrs) == 0 {
|
|
return &v1.Node{}
|
|
}
|
|
return &v1.Node{
|
|
Spec: v1.NodeSpec{
|
|
PodCIDR: cidrs[0],
|
|
PodCIDRs: cidrs,
|
|
},
|
|
}
|
|
}
|
|
|
|
func TestConfigChange(t *testing.T) {
|
|
setUp := func() (*os.File, string, error) {
|
|
tempDir, err := os.MkdirTemp("", "kubeproxy-config-change")
|
|
if err != nil {
|
|
return nil, "", fmt.Errorf("unable to create temporary directory: %v", err)
|
|
}
|
|
fullPath := filepath.Join(tempDir, "kube-proxy-config")
|
|
file, err := os.Create(fullPath)
|
|
if err != nil {
|
|
return nil, "", fmt.Errorf("unexpected error when creating temp file: %v", err)
|
|
}
|
|
|
|
_, err = file.WriteString(`apiVersion: kubeproxy.config.k8s.io/v1alpha1
|
|
bindAddress: 0.0.0.0
|
|
bindAddressHardFail: false
|
|
clientConnection:
|
|
acceptContentTypes: ""
|
|
burst: 10
|
|
contentType: application/vnd.kubernetes.protobuf
|
|
kubeconfig: /var/lib/kube-proxy/kubeconfig.conf
|
|
qps: 5
|
|
clusterCIDR: 10.244.0.0/16
|
|
configSyncPeriod: 15m0s
|
|
conntrack:
|
|
maxPerCore: 32768
|
|
min: 131072
|
|
tcpCloseWaitTimeout: 1h0m0s
|
|
tcpEstablishedTimeout: 24h0m0s
|
|
enableProfiling: false
|
|
healthzBindAddress: 0.0.0.0:10256
|
|
hostnameOverride: ""
|
|
iptables:
|
|
masqueradeAll: false
|
|
masqueradeBit: 14
|
|
minSyncPeriod: 0s
|
|
syncPeriod: 30s
|
|
ipvs:
|
|
excludeCIDRs: null
|
|
minSyncPeriod: 0s
|
|
scheduler: ""
|
|
syncPeriod: 30s
|
|
kind: KubeProxyConfiguration
|
|
metricsBindAddress: 127.0.0.1:10249
|
|
mode: ""
|
|
nodePortAddresses: null
|
|
oomScoreAdj: -999
|
|
portRange: ""
|
|
detectLocalMode: "BridgeInterface"`)
|
|
if err != nil {
|
|
return nil, "", fmt.Errorf("unexpected error when writing content to temp kube-proxy config file: %v", err)
|
|
}
|
|
|
|
return file, tempDir, nil
|
|
}
|
|
|
|
tearDown := func(file *os.File, tempDir string) {
|
|
file.Close()
|
|
os.RemoveAll(tempDir)
|
|
}
|
|
|
|
testCases := []struct {
|
|
name string
|
|
proxyServer proxyRun
|
|
append bool
|
|
expectedErr string
|
|
}{
|
|
{
|
|
name: "update config file",
|
|
proxyServer: new(fakeProxyServerLongRun),
|
|
append: true,
|
|
expectedErr: "content of the proxy server's configuration file was updated",
|
|
},
|
|
{
|
|
name: "fake error",
|
|
proxyServer: new(fakeProxyServerError),
|
|
expectedErr: "mocking error from ProxyServer.Run()",
|
|
},
|
|
}
|
|
|
|
for _, tc := range testCases {
|
|
_, ctx := ktesting.NewTestContext(t)
|
|
file, tempDir, err := setUp()
|
|
if err != nil {
|
|
t.Fatalf("unexpected error when setting up environment: %v", err)
|
|
}
|
|
|
|
opt := NewOptions()
|
|
opt.ConfigFile = file.Name()
|
|
err = opt.Complete(new(pflag.FlagSet))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
opt.proxyServer = tc.proxyServer
|
|
|
|
errCh := make(chan error, 1)
|
|
go func() {
|
|
errCh <- opt.runLoop(ctx)
|
|
}()
|
|
|
|
if tc.append {
|
|
file.WriteString("append fake content")
|
|
}
|
|
|
|
select {
|
|
case err := <-errCh:
|
|
if err != nil {
|
|
if !strings.Contains(err.Error(), tc.expectedErr) {
|
|
t.Errorf("[%s] Expected error containing %v, got %v", tc.name, tc.expectedErr, err)
|
|
}
|
|
}
|
|
case <-time.After(10 * time.Second):
|
|
t.Errorf("[%s] Timeout: unable to get any events or internal timeout.", tc.name)
|
|
}
|
|
tearDown(file, tempDir)
|
|
}
|
|
}
|
|
|
|
func Test_waitForPodCIDR(t *testing.T) {
|
|
_, ctx := ktesting.NewTestContext(t)
|
|
expected := []string{"192.168.0.0/24", "fd00:1:2::/64"}
|
|
nodeName := "test-node"
|
|
oldNode := &v1.Node{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: nodeName,
|
|
ResourceVersion: "1000",
|
|
},
|
|
Spec: v1.NodeSpec{
|
|
PodCIDR: "10.0.0.0/24",
|
|
PodCIDRs: []string{"10.0.0.0/24", "2001:db2:1/64"},
|
|
},
|
|
}
|
|
node := &v1.Node{
|
|
ObjectMeta: metav1.ObjectMeta{
|
|
Name: nodeName,
|
|
ResourceVersion: "1",
|
|
},
|
|
}
|
|
updatedNode := node.DeepCopy()
|
|
updatedNode.Spec.PodCIDRs = expected
|
|
updatedNode.Spec.PodCIDR = expected[0]
|
|
|
|
// start with the new node
|
|
client := clientsetfake.NewSimpleClientset()
|
|
client.AddReactor("list", "nodes", func(action clientgotesting.Action) (handled bool, ret runtime.Object, err error) {
|
|
obj := &v1.NodeList{}
|
|
return true, obj, nil
|
|
})
|
|
fakeWatch := watch.NewFake()
|
|
client.PrependWatchReactor("nodes", clientgotesting.DefaultWatchReactor(fakeWatch, nil))
|
|
|
|
go func() {
|
|
fakeWatch.Add(node)
|
|
// receive a delete event for the old node
|
|
fakeWatch.Delete(oldNode)
|
|
// set the PodCIDRs on the new node
|
|
fakeWatch.Modify(updatedNode)
|
|
}()
|
|
got, err := waitForPodCIDR(ctx, client, node.Name)
|
|
if err != nil {
|
|
t.Errorf("waitForPodCIDR() unexpected error %v", err)
|
|
return
|
|
}
|
|
if !reflect.DeepEqual(got.Spec.PodCIDRs, expected) {
|
|
t.Errorf("waitForPodCIDR() got %v expected to be %v ", got.Spec.PodCIDRs, expected)
|
|
}
|
|
}
|
|
|
|
func TestGetConntrackMax(t *testing.T) {
|
|
ncores := goruntime.NumCPU()
|
|
testCases := []struct {
|
|
min int32
|
|
maxPerCore int32
|
|
expected int
|
|
err string
|
|
}{
|
|
{
|
|
expected: 0,
|
|
},
|
|
{
|
|
maxPerCore: 67890, // use this if Max is 0
|
|
min: 1, // avoid 0 default
|
|
expected: 67890 * ncores,
|
|
},
|
|
{
|
|
maxPerCore: 1, // ensure that Min is considered
|
|
min: 123456,
|
|
expected: 123456,
|
|
},
|
|
{
|
|
maxPerCore: 0, // leave system setting
|
|
min: 123456,
|
|
expected: 0,
|
|
},
|
|
}
|
|
|
|
for i, tc := range testCases {
|
|
cfg := proxyconfigapi.KubeProxyConntrackConfiguration{
|
|
Min: ptr.To(tc.min),
|
|
MaxPerCore: ptr.To(tc.maxPerCore),
|
|
}
|
|
_, ctx := ktesting.NewTestContext(t)
|
|
x, e := getConntrackMax(ctx, cfg)
|
|
if e != nil {
|
|
if tc.err == "" {
|
|
t.Errorf("[%d] unexpected error: %v", i, e)
|
|
} else if !strings.Contains(e.Error(), tc.err) {
|
|
t.Errorf("[%d] expected an error containing %q: %v", i, tc.err, e)
|
|
}
|
|
} else if x != tc.expected {
|
|
t.Errorf("[%d] expected %d, got %d", i, tc.expected, x)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestProxyServer_platformSetup(t *testing.T) {
|
|
tests := []struct {
|
|
name string
|
|
node *v1.Node
|
|
config *proxyconfigapi.KubeProxyConfiguration
|
|
wantPodCIDRs []string
|
|
}{
|
|
{
|
|
name: "LocalModeNodeCIDR store the node PodCIDRs obtained",
|
|
node: makeNodeWithPodCIDRs("10.0.0.0/24"),
|
|
config: &proxyconfigapi.KubeProxyConfiguration{DetectLocalMode: proxyconfigapi.LocalModeNodeCIDR},
|
|
wantPodCIDRs: []string{"10.0.0.0/24"},
|
|
},
|
|
{
|
|
name: "LocalModeNodeCIDR store the node PodCIDRs obtained dual stack",
|
|
node: makeNodeWithPodCIDRs("10.0.0.0/24", "2001:db2:1/64"),
|
|
config: &proxyconfigapi.KubeProxyConfiguration{DetectLocalMode: proxyconfigapi.LocalModeNodeCIDR},
|
|
wantPodCIDRs: []string{"10.0.0.0/24", "2001:db2:1/64"},
|
|
},
|
|
{
|
|
name: "LocalModeClusterCIDR does not get the node PodCIDRs",
|
|
node: makeNodeWithPodCIDRs("10.0.0.0/24", "2001:db2:1/64"),
|
|
config: &proxyconfigapi.KubeProxyConfiguration{DetectLocalMode: proxyconfigapi.LocalModeClusterCIDR},
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
_, ctx := ktesting.NewTestContext(t)
|
|
client := clientsetfake.NewSimpleClientset(tt.node)
|
|
s := &ProxyServer{
|
|
Config: tt.config,
|
|
Client: client,
|
|
NodeName: "nodename",
|
|
NodeIPs: map[v1.IPFamily]net.IP{
|
|
v1.IPv4Protocol: netutils.ParseIPSloppy("127.0.0.1"),
|
|
v1.IPv6Protocol: net.IPv6zero,
|
|
},
|
|
}
|
|
err := s.platformSetup(ctx)
|
|
if err != nil {
|
|
t.Errorf("ProxyServer.createProxier() error = %v", err)
|
|
return
|
|
}
|
|
if !reflect.DeepEqual(s.podCIDRs, tt.wantPodCIDRs) {
|
|
t.Errorf("Expected PodCIDRs %v got %v", tt.wantPodCIDRs, s.podCIDRs)
|
|
}
|
|
|
|
})
|
|
}
|
|
}
|
|
|
|
type fakeConntracker struct {
|
|
called []string
|
|
err error
|
|
}
|
|
|
|
// SetMax value is calculated based on the number of CPUs by getConntrackMax()
|
|
func (fc *fakeConntracker) SetMax(ctx context.Context, max int) error {
|
|
fc.called = append(fc.called, "SetMax")
|
|
return fc.err
|
|
}
|
|
func (fc *fakeConntracker) SetTCPEstablishedTimeout(ctx context.Context, seconds int) error {
|
|
fc.called = append(fc.called, fmt.Sprintf("SetTCPEstablishedTimeout(%d)", seconds))
|
|
return fc.err
|
|
}
|
|
func (fc *fakeConntracker) SetTCPCloseWaitTimeout(ctx context.Context, seconds int) error {
|
|
fc.called = append(fc.called, fmt.Sprintf("SetTCPCloseWaitTimeout(%d)", seconds))
|
|
return fc.err
|
|
}
|
|
func (fc *fakeConntracker) SetTCPBeLiberal(ctx context.Context, value int) error {
|
|
fc.called = append(fc.called, fmt.Sprintf("SetTCPBeLiberal(%d)", value))
|
|
return fc.err
|
|
}
|
|
func (fc *fakeConntracker) SetUDPTimeout(ctx context.Context, seconds int) error {
|
|
fc.called = append(fc.called, fmt.Sprintf("SetUDPTimeout(%d)", seconds))
|
|
return fc.err
|
|
}
|
|
func (fc *fakeConntracker) SetUDPStreamTimeout(ctx context.Context, seconds int) error {
|
|
fc.called = append(fc.called, fmt.Sprintf("SetUDPStreamTimeout(%d)", seconds))
|
|
return fc.err
|
|
}
|
|
|
|
func TestSetupConntrack(t *testing.T) {
|
|
_, ctx := ktesting.NewTestContext(t)
|
|
tests := []struct {
|
|
name string
|
|
config proxyconfigapi.KubeProxyConntrackConfiguration
|
|
expect []string
|
|
conntrackErr error
|
|
wantErr bool
|
|
}{
|
|
{
|
|
name: "do nothing if conntrack config is empty",
|
|
config: proxyconfigapi.KubeProxyConntrackConfiguration{},
|
|
expect: nil,
|
|
},
|
|
{
|
|
name: "SetMax is called if conntrack.maxPerCore is specified",
|
|
config: proxyconfigapi.KubeProxyConntrackConfiguration{
|
|
MaxPerCore: ptr.To(int32(12)),
|
|
},
|
|
expect: []string{"SetMax"},
|
|
},
|
|
{
|
|
name: "SetMax is not called if conntrack.maxPerCore is 0",
|
|
config: proxyconfigapi.KubeProxyConntrackConfiguration{
|
|
MaxPerCore: ptr.To(int32(0)),
|
|
},
|
|
expect: nil,
|
|
},
|
|
{
|
|
name: "SetTCPEstablishedTimeout is called if conntrack.tcpEstablishedTimeout is specified",
|
|
config: proxyconfigapi.KubeProxyConntrackConfiguration{
|
|
TCPEstablishedTimeout: &metav1.Duration{Duration: 5 * time.Second},
|
|
},
|
|
expect: []string{"SetTCPEstablishedTimeout(5)"},
|
|
},
|
|
{
|
|
name: "SetTCPEstablishedTimeout is not called if conntrack.tcpEstablishedTimeout is 0",
|
|
config: proxyconfigapi.KubeProxyConntrackConfiguration{
|
|
TCPEstablishedTimeout: &metav1.Duration{Duration: 0 * time.Second},
|
|
},
|
|
expect: nil,
|
|
},
|
|
{
|
|
name: "SetTCPCloseWaitTimeout is called if conntrack.tcpCloseWaitTimeout is specified",
|
|
config: proxyconfigapi.KubeProxyConntrackConfiguration{
|
|
TCPCloseWaitTimeout: &metav1.Duration{Duration: 5 * time.Second},
|
|
},
|
|
expect: []string{"SetTCPCloseWaitTimeout(5)"},
|
|
},
|
|
{
|
|
name: "SetTCPCloseWaitTimeout is not called if conntrack.tcpCloseWaitTimeout is 0",
|
|
config: proxyconfigapi.KubeProxyConntrackConfiguration{
|
|
TCPCloseWaitTimeout: &metav1.Duration{Duration: 0 * time.Second},
|
|
},
|
|
expect: nil,
|
|
},
|
|
{
|
|
name: "SetTCPBeLiberal is called if conntrack.tcpBeLiberal is true",
|
|
config: proxyconfigapi.KubeProxyConntrackConfiguration{
|
|
TCPBeLiberal: true,
|
|
},
|
|
expect: []string{"SetTCPBeLiberal(1)"},
|
|
},
|
|
{
|
|
name: "SetTCPBeLiberal is not called if conntrack.tcpBeLiberal is false",
|
|
config: proxyconfigapi.KubeProxyConntrackConfiguration{
|
|
TCPBeLiberal: false,
|
|
},
|
|
expect: nil,
|
|
},
|
|
{
|
|
name: "SetUDPTimeout is called if conntrack.udpTimeout is specified",
|
|
config: proxyconfigapi.KubeProxyConntrackConfiguration{
|
|
UDPTimeout: metav1.Duration{Duration: 5 * time.Second},
|
|
},
|
|
expect: []string{"SetUDPTimeout(5)"},
|
|
},
|
|
{
|
|
name: "SetUDPTimeout is called if conntrack.udpTimeout is zero",
|
|
config: proxyconfigapi.KubeProxyConntrackConfiguration{
|
|
UDPTimeout: metav1.Duration{Duration: 0 * time.Second},
|
|
},
|
|
expect: nil,
|
|
},
|
|
{
|
|
name: "SetUDPStreamTimeout is called if conntrack.udpStreamTimeout is specified",
|
|
config: proxyconfigapi.KubeProxyConntrackConfiguration{
|
|
UDPStreamTimeout: metav1.Duration{Duration: 5 * time.Second},
|
|
},
|
|
expect: []string{"SetUDPStreamTimeout(5)"},
|
|
},
|
|
{
|
|
name: "SetUDPStreamTimeout is called if conntrack.udpStreamTimeout is zero",
|
|
config: proxyconfigapi.KubeProxyConntrackConfiguration{
|
|
UDPStreamTimeout: metav1.Duration{Duration: 0 * time.Second},
|
|
},
|
|
expect: nil,
|
|
},
|
|
{
|
|
name: "an error is returned if conntrack.SetTCPEstablishedTimeout fails",
|
|
config: proxyconfigapi.KubeProxyConntrackConfiguration{
|
|
TCPEstablishedTimeout: &metav1.Duration{Duration: 5 * time.Second},
|
|
},
|
|
expect: []string{"SetTCPEstablishedTimeout(5)"},
|
|
conntrackErr: errors.New("random error"),
|
|
wantErr: true,
|
|
},
|
|
}
|
|
|
|
for _, test := range tests {
|
|
t.Run(test.name, func(t *testing.T) {
|
|
fc := &fakeConntracker{err: test.conntrackErr}
|
|
s := &ProxyServer{
|
|
Config: &proxyconfigapi.KubeProxyConfiguration{
|
|
Linux: proxyconfigapi.KubeProxyLinuxConfiguration{
|
|
Conntrack: test.config,
|
|
},
|
|
},
|
|
}
|
|
err := s.setupConntrack(ctx, fc)
|
|
if test.wantErr && err == nil {
|
|
t.Errorf("Test %q: Expected error, got nil", test.name)
|
|
}
|
|
if !test.wantErr && err != nil {
|
|
t.Errorf("Test %q: Expected no error, got %v", test.name, err)
|
|
}
|
|
if !cmp.Equal(fc.called, test.expect) {
|
|
t.Errorf("Test %q: Expected conntrack calls: %v, got: %v", test.name, test.expect, fc.called)
|
|
}
|
|
})
|
|
}
|
|
}
|