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kubeadm should always fall back to client version when there is any internet issue

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This commit is contained in:
RainbowMango 2019-07-11 17:42:50 +08:00
parent c45b77541b
commit a4ca944d53
2 changed files with 17 additions and 16 deletions
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4
cmd/kubeadm/app/util/version.go
View File

@ -96,10 +96,6 @@ func kubernetesReleaseVersion(version string, fetcher func(string, time.Duration
url := fmt.Sprintf("%s/%s.txt", bucketURL, versionLabel)
body, err := fetcher(url, getReleaseVersionTimeout)
if err != nil {
// If the network operaton was successful but the server did not reply with StatusOK
if body != "" {
return "", err
}
if clientVersionErr == nil {
// Handle air-gapped environments by falling back to the client version.
klog.Warningf("could not fetch a Kubernetes version from the internet: %v", err)

29
cmd/kubeadm/app/util/version_test.go
View File

@ -19,6 +19,7 @@ package util
import (
"errors"
"fmt"
"k8s.io/kubernetes/cmd/kubeadm/app/constants"
"path"
"strings"
"testing"
@ -106,19 +107,23 @@ func TestValidConvenientForUserVersion(t *testing.T) {
func TestVersionFromNetwork(t *testing.T) {
type T struct {
Content string
Expected string
ErrorExpected bool
Content string
Expected string
FetcherErrorExpected bool
ErrorExpected bool
}
currentVersion := normalizedBuildVersion(constants.CurrentKubernetesVersion.String())
cases := map[string]T{
"stable": {"stable-1", "v1.4.6", false}, // recursive pointer to stable-1
"stable-1": {"v1.4.6", "v1.4.6", false},
"stable-1.3": {"v1.3.10", "v1.3.10", false},
"latest": {"v1.6.0-alpha.0", "v1.6.0-alpha.0", false},
"latest-1.3": {"v1.3.11-beta.0", "v1.3.11-beta.0", false},
"empty": {"", "", true},
"garbage": {"<?xml version='1.0'?><Error><Code>NoSuchKey</Code><Message>The specified key does not exist.</Message></Error>", "", true},
"unknown": {"The requested URL was not found on this server.", "", true},
"stable": {"stable-1", "v1.4.6", false, false}, // recursive pointer to stable-1
"stable-1": {"v1.4.6", "v1.4.6", false, false},
"stable-1.3": {"v1.3.10", "v1.3.10", false, false},
"latest": {"v1.6.0-alpha.0", "v1.6.0-alpha.0", false, false},
"latest-1.3": {"v1.3.11-beta.0", "v1.3.11-beta.0", false, false},
"empty": {"", currentVersion, true, false},
"garbage": {"<?xml version='1.0'?><Error><Code>NoSuchKey</Code><Message>The specified key does not exist.</Message></Error>", currentVersion, true, false},
"unknown": {"The requested URL was not found on this server.", currentVersion, true, false},
}
for k, v := range cases {
@ -128,7 +133,7 @@ func TestVersionFromNetwork(t *testing.T) {
key := strings.TrimSuffix(path.Base(url), ".txt")
res, found := cases[key]
if found {
if v.ErrorExpected {
if v.FetcherErrorExpected {
return "error", errors.New("expected error")
}
return res.Content, nil