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dual stack services (#91824)

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* api: structure change

* api: defaulting, conversion, and validation

* [FIX] validation: auto remove second ip/family when service changes to SingleStack

* [FIX] api: defaulting, conversion, and validation

* api-server: clusterIPs alloc, printers, storage and strategy

* [FIX] clusterIPs default on read

* alloc: auto remove second ip/family when service changes to SingleStack

* api-server: repair loop handling for clusterIPs

* api-server: force kubernetes default service into single stack

* api-server: tie dualstack feature flag with endpoint feature flag

* controller-manager: feature flag, endpoint, and endpointSlice controllers handling multi family service

* [FIX] controller-manager: feature flag, endpoint, and endpointSlicecontrollers handling multi family service

* kube-proxy: feature-flag, utils, proxier, and meta proxier

* [FIX] kubeproxy: call both proxier at the same time

* kubenet: remove forced pod IP sorting

* kubectl: modify describe to include ClusterIPs, IPFamilies, and IPFamilyPolicy

* e2e: fix tests that depends on IPFamily field AND add dual stack tests

* e2e: fix expected error message for ClusterIP immutability

* add integration tests for dualstack

the third phase of dual stack is a very complex change in the API,
basically it introduces Dual Stack services. Main changes are:

- It pluralizes the Service IPFamily field to IPFamilies,
and removes the singular field.
- It introduces a new field IPFamilyPolicyType that can take
3 values to express the "dual-stack(mad)ness" of the cluster:
SingleStack, PreferDualStack and RequireDualStack
- It pluralizes ClusterIP to ClusterIPs.

The goal is to add coverage to the services API operations,
taking into account the 6 different modes a cluster can have:

- single stack: IP4 or IPv6 (as of today)
- dual stack: IPv4 only, IPv6 only, IPv4 - IPv6, IPv6 - IPv4

* [FIX] add integration tests for dualstack

* generated data

* generated files

Co-authored-by: Antonio Ojea <aojea@redhat.com>
This commit is contained in:
Khaled Henidak (Kal)
2020-10-26 13:15:59 -07:00
committed by GitHub
parent d0e06cf3e0
commit 6675eba3ef
84 changed files with 11170 additions and 3514 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
pkg/controller/endpointslice/endpointslice_controller_test.go
View File

@@ -340,7 +340,6 @@ func TestSyncServiceFull(t *testing.T) {
client, esController := newController([]string{"node-1"}, time.Duration(0))
namespace := metav1.NamespaceDefault
serviceName := "all-the-protocols"
ipv6Family := v1.IPv6Protocol
pod1 := newPod(1, namespace, true, 0)
pod1.Status.PodIPs = []v1.PodIP{{IP: "1.2.3.4"}}
@@ -364,8 +363,8 @@ func TestSyncServiceFull(t *testing.T) {
{Name: "udp-example", TargetPort: intstr.FromInt(161), Protocol: v1.ProtocolUDP},
{Name: "sctp-example", TargetPort: intstr.FromInt(3456), Protocol: v1.ProtocolSCTP},
},
Selector: map[string]string{"foo": "bar"},
IPFamily: &ipv6Family,
Selector: map[string]string{"foo": "bar"},
IPFamilies: []v1.IPFamily{v1.IPv6Protocol},
},
}
esController.serviceStore.Add(service)
@@ -491,8 +490,9 @@ func TestPodAddsBatching(t *testing.T) {
esController.serviceStore.Add(&v1.Service{
ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: ns},
Spec: v1.ServiceSpec{
Selector: map[string]string{"foo": "bar"},
Ports: []v1.ServicePort{{Port: 80}},
Selector: map[string]string{"foo": "bar"},
IPFamilies: []v1.IPFamily{v1.IPv4Protocol},
Ports: []v1.ServicePort{{Port: 80}},
},
})
@@ -624,8 +624,9 @@ func TestPodUpdatesBatching(t *testing.T) {
esController.serviceStore.Add(&v1.Service{
ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: ns},
Spec: v1.ServiceSpec{
Selector: map[string]string{"foo": "bar"},
Ports: []v1.ServicePort{{Port: 80}},
Selector: map[string]string{"foo": "bar"},
IPFamilies: []v1.IPFamily{v1.IPv4Protocol},
Ports: []v1.ServicePort{{Port: 80}},
},
})
@@ -758,8 +759,9 @@ func TestPodDeleteBatching(t *testing.T) {
esController.serviceStore.Add(&v1.Service{
ObjectMeta: metav1.ObjectMeta{Name: "foo", Namespace: ns},
Spec: v1.ServiceSpec{
Selector: map[string]string{"foo": "bar"},
Ports: []v1.ServicePort{{Port: 80}},
Selector: map[string]string{"foo": "bar"},
IPFamilies: []v1.IPFamily{v1.IPv4Protocol},
Ports: []v1.ServicePort{{Port: 80}},
},
})
@@ -810,8 +812,9 @@ func createService(t *testing.T, esController *endpointSliceController, namespac
UID: types.UID(namespace + "-" + serviceName),
},
Spec: v1.ServiceSpec{
Ports: []v1.ServicePort{{TargetPort: intstr.FromInt(80)}},
Selector: map[string]string{"foo": "bar"},
Ports: []v1.ServicePort{{TargetPort: intstr.FromInt(80)}},
Selector: map[string]string{"foo": "bar"},
IPFamilies: []v1.IPFamily{v1.IPv4Protocol},
},
}
esController.serviceStore.Add(service)