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fix(helm): use 127.0.0.1 instead of localhost

Browse source 
This switches the local chart repo to use 127.0.0.1 instead of localhost
so that the net library does not negotiate localhost to an IPv6 address,
which is known to cause issues in some Docker containers.

Breaking Change: When testing on a system that does NOT have IPv4
configured, this will break 'helm serve'. We estimate this will impact
none of the current user base.

Closes #1410
This commit is contained in:
Matt Butcher 2016-10-20 15:49:51 -06:00
parent 2eed3f0464
commit 4b7e4b71bd
4 changed files with 14 additions and 14 deletions
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4
cmd/helm/init.go
View file

@ -40,7 +40,9 @@ const (
stableRepository = "stable"
localRepository = "local"
stableRepositoryURL = "http://storage.googleapis.com/kubernetes-charts"
localRepositoryURL = "http://localhost:8879/charts"
// This is the IPv4 loopback, not localhost, because we have to force IPv4
// for Dockerized Helm: https://github.com/kubernetes/helm/issues/1410
localRepositoryURL = "http://127.0.0.1:8879/charts"
)
type initCmd struct {

2
cmd/helm/serve.go
View file

@ -51,7 +51,7 @@ func newServeCmd(out io.Writer) *cobra.Command {
f := cmd.Flags()
f.StringVar(&srv.repoPath, "repo-path", helmpath.Home(homePath()).LocalRepository(), "local directory path from which to serve charts")
f.StringVar(&srv.address, "address", "localhost:8879", "address to listen on")
f.StringVar(&srv.address, "address", "127.0.0.1:8879", "address to listen on")
return cmd
}

14
pkg/repo/local.go
View file

@ -51,10 +51,6 @@ const indexHTMLTemplate = `
</html>
`
const indexFile = `
Welcome to the Kubernetes Package manager!\nBrowse charts on localhost:8879/charts!
`
// RepositoryServer is an HTTP handler for serving a chart repository.
type RepositoryServer struct {
RepoPath string
@ -64,10 +60,8 @@ type RepositoryServer struct {
func (s *RepositoryServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
uri := r.URL.Path
switch uri {
case "/":
w.Header().Set("Content-Type", "text/plain; charset=utf-8")
fmt.Fprintf(w, indexFile)
case "/charts/", "/charts/index.html", "/charts/index":
case "/", "/charts/", "/charts/index.html", "/charts/index":
w.Header().Set("Content-Type", "text/html; charset=utf-8")
s.htmlIndex(w, r)
default:
file := strings.TrimPrefix(uri, "/charts/")
@ -78,7 +72,7 @@ func (s *RepositoryServer) ServeHTTP(w http.ResponseWriter, r *http.Request) {
// StartLocalRepo starts a web server and serves files from the given path
func StartLocalRepo(path, address string) error {
if address == "" {
address = ":8879"
address = "127.0.0.1:8879"
}
s := &RepositoryServer{RepoPath: path}
return http.ListenAndServe(address, s)
@ -130,7 +124,7 @@ func Reindex(ch *chart.Chart, path string) error {
return err
}
y.Add(ch.Metadata, name+".tgz", "http://localhost:8879/charts", "sha256:"+dig)
y.Add(ch.Metadata, name+".tgz", "http://127.0.0.1:8879/charts", "sha256:"+dig)
out, err := yaml.Marshal(y)
if err != nil {

8
pkg/repo/local_test.go
View file

@ -25,16 +25,20 @@ import (
)
func TestRepositoryServer(t *testing.T) {
expectedIndexYAML, err := ioutil.ReadFile("testdata/server/index.yaml")
if err != nil {
t.Fatal(err)
}
tests := []struct {
name string
path string
expect string
}{
{"index YAML", "/charts/index.yaml", "apiVersion: v1"},
{"index YAML", "/charts/index.yaml", string(expectedIndexYAML)},
{"index HTML", "/charts/index.html", "<html>"},
{"charts root", "/charts/", "<html>"},
{"root", "/", "Welcome"},
{"root", "/", "<html>"},
{"file", "/test.txt", "Hello World"},
}