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f994ae2521
In fact, this actually uses pkg/util/node's GetHostname() but takes the unit tests from cmd/kubeadm/app/util's private fork of that function since they were more extensive. (Of course the fact that kubeadm had a private fork of this function is a strong argument for moving it to component-helpers.)
257 lines
7.1 KiB
Go
257 lines
7.1 KiB
Go
/*
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Copyright 2016 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 node
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import (
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"net"
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"reflect"
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"testing"
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"github.com/stretchr/testify/assert"
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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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netutils "k8s.io/utils/net"
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)
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func TestGetPreferredAddress(t *testing.T) {
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testcases := map[string]struct {
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Labels map[string]string
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Addresses []v1.NodeAddress
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Preferences []v1.NodeAddressType
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ExpectErr string
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ExpectAddress string
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}{
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"no addresses": {
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ExpectErr: "no preferred addresses found; known addresses: []",
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},
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"missing address": {
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Addresses: []v1.NodeAddress{
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{Type: v1.NodeInternalIP, Address: "1.2.3.4"},
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},
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Preferences: []v1.NodeAddressType{v1.NodeHostName},
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ExpectErr: "no preferred addresses found; known addresses: [{InternalIP 1.2.3.4}]",
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},
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"found address": {
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Addresses: []v1.NodeAddress{
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{Type: v1.NodeInternalIP, Address: "1.2.3.4"},
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{Type: v1.NodeExternalIP, Address: "1.2.3.5"},
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{Type: v1.NodeExternalIP, Address: "1.2.3.7"},
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},
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Preferences: []v1.NodeAddressType{v1.NodeHostName, v1.NodeExternalIP},
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ExpectAddress: "1.2.3.5",
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},
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"found hostname address": {
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Labels: map[string]string{v1.LabelHostname: "label-hostname"},
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Addresses: []v1.NodeAddress{
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{Type: v1.NodeExternalIP, Address: "1.2.3.5"},
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{Type: v1.NodeHostName, Address: "status-hostname"},
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},
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Preferences: []v1.NodeAddressType{v1.NodeHostName, v1.NodeExternalIP},
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ExpectAddress: "status-hostname",
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},
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"label address ignored": {
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Labels: map[string]string{v1.LabelHostname: "label-hostname"},
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Addresses: []v1.NodeAddress{
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{Type: v1.NodeExternalIP, Address: "1.2.3.5"},
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},
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Preferences: []v1.NodeAddressType{v1.NodeHostName, v1.NodeExternalIP},
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ExpectAddress: "1.2.3.5",
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},
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}
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for k, tc := range testcases {
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node := &v1.Node{
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ObjectMeta: metav1.ObjectMeta{Labels: tc.Labels},
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Status: v1.NodeStatus{Addresses: tc.Addresses},
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}
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address, err := GetPreferredNodeAddress(node, tc.Preferences)
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errString := ""
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if err != nil {
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errString = err.Error()
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}
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if errString != tc.ExpectErr {
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t.Errorf("%s: expected err=%q, got %q", k, tc.ExpectErr, errString)
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}
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if address != tc.ExpectAddress {
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t.Errorf("%s: expected address=%q, got %q", k, tc.ExpectAddress, address)
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}
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}
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}
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func TestGetNodeHostIPs(t *testing.T) {
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testcases := []struct {
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name string
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addresses []v1.NodeAddress
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expectIPs []net.IP
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}{
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{
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name: "no addresses",
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expectIPs: nil,
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},
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{
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name: "no InternalIP/ExternalIP",
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addresses: []v1.NodeAddress{
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{Type: v1.NodeHostName, Address: "example.com"},
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},
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expectIPs: nil,
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},
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{
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name: "IPv4-only, simple",
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addresses: []v1.NodeAddress{
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{Type: v1.NodeInternalIP, Address: "1.2.3.4"},
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{Type: v1.NodeExternalIP, Address: "4.3.2.1"},
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{Type: v1.NodeExternalIP, Address: "4.3.2.2"},
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},
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expectIPs: []net.IP{netutils.ParseIPSloppy("1.2.3.4")},
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},
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{
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name: "IPv4-only, external-first",
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addresses: []v1.NodeAddress{
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{Type: v1.NodeExternalIP, Address: "4.3.2.1"},
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{Type: v1.NodeExternalIP, Address: "4.3.2.2"},
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{Type: v1.NodeInternalIP, Address: "1.2.3.4"},
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},
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expectIPs: []net.IP{netutils.ParseIPSloppy("1.2.3.4")},
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},
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{
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name: "IPv4-only, no internal",
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addresses: []v1.NodeAddress{
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{Type: v1.NodeExternalIP, Address: "4.3.2.1"},
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{Type: v1.NodeExternalIP, Address: "4.3.2.2"},
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},
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expectIPs: []net.IP{netutils.ParseIPSloppy("4.3.2.1")},
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},
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{
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name: "dual-stack node",
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addresses: []v1.NodeAddress{
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{Type: v1.NodeInternalIP, Address: "1.2.3.4"},
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{Type: v1.NodeExternalIP, Address: "4.3.2.1"},
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{Type: v1.NodeExternalIP, Address: "4.3.2.2"},
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{Type: v1.NodeInternalIP, Address: "a:b::c:d"},
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{Type: v1.NodeExternalIP, Address: "d:c::b:a"},
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},
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expectIPs: []net.IP{netutils.ParseIPSloppy("1.2.3.4"), netutils.ParseIPSloppy("a:b::c:d")},
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},
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{
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name: "dual-stack node, different order",
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addresses: []v1.NodeAddress{
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{Type: v1.NodeInternalIP, Address: "1.2.3.4"},
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{Type: v1.NodeInternalIP, Address: "a:b::c:d"},
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{Type: v1.NodeExternalIP, Address: "4.3.2.1"},
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{Type: v1.NodeExternalIP, Address: "4.3.2.2"},
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{Type: v1.NodeExternalIP, Address: "d:c::b:a"},
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},
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expectIPs: []net.IP{netutils.ParseIPSloppy("1.2.3.4"), netutils.ParseIPSloppy("a:b::c:d")},
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},
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{
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name: "dual-stack node, IPv6-first, no internal IPv4, dual-stack cluster",
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addresses: []v1.NodeAddress{
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{Type: v1.NodeInternalIP, Address: "a:b::c:d"},
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{Type: v1.NodeExternalIP, Address: "d:c::b:a"},
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{Type: v1.NodeExternalIP, Address: "4.3.2.1"},
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{Type: v1.NodeExternalIP, Address: "4.3.2.2"},
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},
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expectIPs: []net.IP{netutils.ParseIPSloppy("a:b::c:d"), netutils.ParseIPSloppy("4.3.2.1")},
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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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node := &v1.Node{
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Status: v1.NodeStatus{Addresses: tc.addresses},
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}
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nodeIPs, err := GetNodeHostIPs(node)
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nodeIP, err2 := GetNodeHostIP(node)
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if (err == nil && err2 != nil) || (err != nil && err2 == nil) {
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t.Errorf("GetNodeHostIPs() returned error=%q but GetNodeHostIP() returned error=%q", err, err2)
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}
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if err != nil {
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if tc.expectIPs != nil {
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t.Errorf("expected %v, got error (%v)", tc.expectIPs, err)
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}
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} else if tc.expectIPs == nil {
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t.Errorf("expected error, got %v", nodeIPs)
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} else if !reflect.DeepEqual(nodeIPs, tc.expectIPs) {
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t.Errorf("expected %v, got %v", tc.expectIPs, nodeIPs)
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} else if !nodeIP.Equal(nodeIPs[0]) {
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t.Errorf("GetNodeHostIP did not return same primary (%s) as GetNodeHostIPs (%s)", nodeIP.String(), nodeIPs[0].String())
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}
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})
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}
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}
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func TestIsNodeReady(t *testing.T) {
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testCases := []struct {
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name string
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Node *v1.Node
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expect bool
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}{
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{
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name: "case that returns true",
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Node: &v1.Node{
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Status: v1.NodeStatus{
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Conditions: []v1.NodeCondition{
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{
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Type: v1.NodeReady,
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Status: v1.ConditionTrue,
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},
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},
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},
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},
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expect: true,
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},
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{
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name: "case that returns false",
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Node: &v1.Node{
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Status: v1.NodeStatus{
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Conditions: []v1.NodeCondition{
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{
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Type: v1.NodeReady,
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Status: v1.ConditionFalse,
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},
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},
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},
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},
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expect: false,
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},
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{
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name: "case that returns false",
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Node: &v1.Node{
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Status: v1.NodeStatus{
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Conditions: []v1.NodeCondition{
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{
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Type: v1.NodeMemoryPressure,
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Status: v1.ConditionFalse,
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},
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},
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},
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},
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expect: false,
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},
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}
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for _, test := range testCases {
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t.Run(test.name, func(t *testing.T) {
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result := IsNodeReady(test.Node)
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assert.Equal(t, test.expect, result)
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})
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}
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}
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