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Code Issues Projects Releases Wiki Activity

move IPv6DualStack feature to stable. (#104691)

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* kube-proxy

* endpoints controller

* app: kube-controller-manager

* app: cloud-controller-manager

* kubelet

* app: api-server

* node utils + registry/strategy

* api: validation (comment removal)

* api:pod strategy (util pkg)

* api: docs

* core: integration testing

* kubeadm: change feature gate to GA

* service registry and rest stack

* move feature to GA

* generated
This commit is contained in:
Khaled Henidak (Kal)
2021-09-24 16:30:22 -07:00
committed by GitHub
parent c74d799677
commit a53e2eaeab
42 changed files with 455 additions and 1373 deletions
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31
cmd/kube-proxy/app/server_others.go
View File

@@ -44,13 +44,11 @@ import (
"k8s.io/apimachinery/pkg/types"
utilnet "k8s.io/apimachinery/pkg/util/net"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
utilfeature "k8s.io/apiserver/pkg/util/feature"
clientset "k8s.io/client-go/kubernetes"
toolswatch "k8s.io/client-go/tools/watch"
"k8s.io/component-base/configz"
"k8s.io/component-base/metrics"
utilsysctl "k8s.io/component-helpers/node/utils/sysctl"
"k8s.io/kubernetes/pkg/features"
"k8s.io/kubernetes/pkg/proxy"
proxyconfigapi "k8s.io/kubernetes/pkg/proxy/apis/config"
"k8s.io/kubernetes/pkg/proxy/apis/config/scheme"
@@ -183,29 +181,25 @@ func newProxyServer(
iptInterface = utiliptables.New(execer, primaryProtocol)
var ipt [2]utiliptables.Interface
dualStack := utilfeature.DefaultFeatureGate.Enabled(features.IPv6DualStack) && proxyMode != proxyModeUserspace
if dualStack {
dualStack := true // While we assume that node supports, we do further checks below
if proxyMode != proxyModeUserspace {
// Create iptables handlers for both families, one is already created
// Always ordered as IPv4, IPv6
if primaryProtocol == utiliptables.ProtocolIPv4 {
ipt[0] = iptInterface
ipt[1] = utiliptables.New(execer, utiliptables.ProtocolIPv6)
// Just because the feature gate is enabled doesn't mean the node
// actually supports dual-stack
if _, err := ipt[1].ChainExists(utiliptables.TableNAT, utiliptables.ChainPostrouting); err != nil {
klog.Warningf("No iptables support for IPv6: %v", err)
dualStack = false
}
} else {
ipt[0] = utiliptables.New(execer, utiliptables.ProtocolIPv4)
ipt[1] = iptInterface
}
}
if dualStack {
klog.V(0).InfoS("kube-proxy running in dual-stack mode", "ipFamily", iptInterface.Protocol())
} else {
klog.V(0).InfoS("kube-proxy running in single-stack mode", "ipFamily", iptInterface.Protocol())
for _, perFamilyIpt := range ipt {
if !perFamilyIpt.Present() {
klog.V(0).InfoS("kube-proxy running in single-stack mode, this ipFamily is not supported", "ipFamily", perFamilyIpt.Protocol())
dualStack = false
}
}
}
if proxyMode == proxyModeIPTables {
@@ -216,8 +210,8 @@ func newProxyServer(
}
if dualStack {
klog.V(0).InfoS("kube-proxy running in dual-stack mode", "ipFamily", iptInterface.Protocol())
klog.V(0).InfoS("Creating dualStackProxier for iptables")
// Always ordered to match []ipt
var localDetectors [2]proxyutiliptables.LocalTrafficDetector
localDetectors, err = getDualStackLocalDetectorTuple(detectLocalMode, config, ipt, nodeInfo)
@@ -241,7 +235,8 @@ func newProxyServer(
healthzServer,
config.NodePortAddresses,
)
} else { // Create a single-stack proxier.
} else {
// Create a single-stack proxier if and only if the node does not support dual-stack (i.e, no iptables support).
var localDetector proxyutiliptables.LocalTrafficDetector
localDetector, err = getLocalDetector(detectLocalMode, config, iptInterface, nodeInfo)
if err != nil {