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Merge pull request #62649 from liggitt/loopback-routing

Browse Source 
Automatic merge from submit-queue (batch tested with PRs 50899, 62649). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Ensure webhook service routing resolves kubernetes.default.svc correctly

Going through the normal endpoint resolve path isn't correct in multi-master scenarios

The auth wrapper is pulling from LoopbackClientConfig, the service resolver should do the same

```release-note
Fixes the kubernetes.default.svc loopback service resolution to use a loopback configuration.
```

Kubernetes-commit: 9c25da64f0f302f69fb14af486bc181cce22293b
This commit is contained in:
Kubernetes Publisher 2018-04-20 15:34:12 -07:00
commit 7455e67b76
5 changed files with 78 additions and 62 deletions
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108
Godeps/Godeps.json generated
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@ -1,6 +1,6 @@
{ {
"ImportPath": "k8s.io/client-go", "ImportPath": "k8s.io/client-go",
"GoVersion": "go1.10", "GoVersion": "go1.9",
"GodepVersion": "v80", "GodepVersion": "v80",
"Packages": [ "Packages": [
"./..." "./..."
@ -360,215 +360,215 @@
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/api/equality", "ImportPath": "k8s.io/apimachinery/pkg/api/equality",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/api/errors", "ImportPath": "k8s.io/apimachinery/pkg/api/errors",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/api/meta", "ImportPath": "k8s.io/apimachinery/pkg/api/meta",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/api/resource", "ImportPath": "k8s.io/apimachinery/pkg/api/resource",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/api/testing", "ImportPath": "k8s.io/apimachinery/pkg/api/testing",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/api/testing/fuzzer", "ImportPath": "k8s.io/apimachinery/pkg/api/testing/fuzzer",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/api/testing/roundtrip", "ImportPath": "k8s.io/apimachinery/pkg/api/testing/roundtrip",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/apimachinery", "ImportPath": "k8s.io/apimachinery/pkg/apimachinery",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
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"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/apimachinery/registered", "ImportPath": "k8s.io/apimachinery/pkg/apimachinery/registered",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
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"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/apis/meta/internalversion", "ImportPath": "k8s.io/apimachinery/pkg/apis/meta/internalversion",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/apis/meta/v1", "ImportPath": "k8s.io/apimachinery/pkg/apis/meta/v1",
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}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured", "ImportPath": "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/apis/meta/v1beta1", "ImportPath": "k8s.io/apimachinery/pkg/apis/meta/v1beta1",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/conversion", "ImportPath": "k8s.io/apimachinery/pkg/conversion",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/conversion/queryparams", "ImportPath": "k8s.io/apimachinery/pkg/conversion/queryparams",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/fields", "ImportPath": "k8s.io/apimachinery/pkg/fields",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/labels", "ImportPath": "k8s.io/apimachinery/pkg/labels",
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}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/runtime", "ImportPath": "k8s.io/apimachinery/pkg/runtime",
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}, },
{ {
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"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/runtime/serializer", "ImportPath": "k8s.io/apimachinery/pkg/runtime/serializer",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/runtime/serializer/json", "ImportPath": "k8s.io/apimachinery/pkg/runtime/serializer/json",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/runtime/serializer/protobuf", "ImportPath": "k8s.io/apimachinery/pkg/runtime/serializer/protobuf",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/runtime/serializer/recognizer", "ImportPath": "k8s.io/apimachinery/pkg/runtime/serializer/recognizer",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/runtime/serializer/streaming", "ImportPath": "k8s.io/apimachinery/pkg/runtime/serializer/streaming",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/runtime/serializer/versioning", "ImportPath": "k8s.io/apimachinery/pkg/runtime/serializer/versioning",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
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"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
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}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/cache", "ImportPath": "k8s.io/apimachinery/pkg/util/cache",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/clock", "ImportPath": "k8s.io/apimachinery/pkg/util/clock",
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}, },
{ {
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}, },
{ {
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}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/framer", "ImportPath": "k8s.io/apimachinery/pkg/util/framer",
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}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/httpstream", "ImportPath": "k8s.io/apimachinery/pkg/util/httpstream",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/httpstream/spdy", "ImportPath": "k8s.io/apimachinery/pkg/util/httpstream/spdy",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/intstr", "ImportPath": "k8s.io/apimachinery/pkg/util/intstr",
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}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/json", "ImportPath": "k8s.io/apimachinery/pkg/util/json",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/mergepatch", "ImportPath": "k8s.io/apimachinery/pkg/util/mergepatch",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/net", "ImportPath": "k8s.io/apimachinery/pkg/util/net",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/remotecommand", "ImportPath": "k8s.io/apimachinery/pkg/util/remotecommand",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/runtime", "ImportPath": "k8s.io/apimachinery/pkg/util/runtime",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/sets", "ImportPath": "k8s.io/apimachinery/pkg/util/sets",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/strategicpatch", "ImportPath": "k8s.io/apimachinery/pkg/util/strategicpatch",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/validation", "ImportPath": "k8s.io/apimachinery/pkg/util/validation",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/validation/field", "ImportPath": "k8s.io/apimachinery/pkg/util/validation/field",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/wait", "ImportPath": "k8s.io/apimachinery/pkg/util/wait",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/util/yaml", "ImportPath": "k8s.io/apimachinery/pkg/util/yaml",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/version", "ImportPath": "k8s.io/apimachinery/pkg/version",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/pkg/watch", "ImportPath": "k8s.io/apimachinery/pkg/watch",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/third_party/forked/golang/json", "ImportPath": "k8s.io/apimachinery/third_party/forked/golang/json",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/third_party/forked/golang/netutil", "ImportPath": "k8s.io/apimachinery/third_party/forked/golang/netutil",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/apimachinery/third_party/forked/golang/reflect", "ImportPath": "k8s.io/apimachinery/third_party/forked/golang/reflect",
"Rev": "1c973d529bdf4c4f349357ca665fb8e1d13e2d0d" "Rev": "73aa818bbacf185a03468ddc170fb275763dec3d"
}, },
{ {
"ImportPath": "k8s.io/kube-openapi/pkg/util/proto", "ImportPath": "k8s.io/kube-openapi/pkg/util/proto",

6
transport/cache.go
View File

@ -44,6 +44,7 @@ type tlsCacheKey struct {
certData string certData string
keyData string keyData string
serverName string serverName string
dial string
} }
func (t tlsCacheKey) String() string { func (t tlsCacheKey) String() string {
@ -51,7 +52,7 @@ func (t tlsCacheKey) String() string {
if len(t.keyData) > 0 { if len(t.keyData) > 0 {
keyText = "<redacted>" keyText = "<redacted>"
} }
return fmt.Sprintf("insecure:%v, caData:%#v, certData:%#v, keyData:%s, serverName:%s", t.insecure, t.caData, t.certData, keyText, t.serverName) return fmt.Sprintf("insecure:%v, caData:%#v, certData:%#v, keyData:%s, serverName:%s, dial:%s", t.insecure, t.caData, t.certData, keyText, t.serverName, t.dial)
} }
func (c *tlsTransportCache) get(config *Config) (http.RoundTripper, error) { func (c *tlsTransportCache) get(config *Config) (http.RoundTripper, error) {
@ -75,7 +76,7 @@ func (c *tlsTransportCache) get(config *Config) (http.RoundTripper, error) {
return nil, err return nil, err
} }
// The options didn't require a custom TLS config // The options didn't require a custom TLS config
if tlsConfig == nil { if tlsConfig == nil && config.Dial == nil {
return http.DefaultTransport, nil return http.DefaultTransport, nil
} }
@ -109,5 +110,6 @@ func tlsConfigKey(c *Config) (tlsCacheKey, error) {
certData: string(c.TLS.CertData), certData: string(c.TLS.CertData),
keyData: string(c.TLS.KeyData), keyData: string(c.TLS.KeyData),
serverName: c.TLS.ServerName, serverName: c.TLS.ServerName,
dial: fmt.Sprintf("%p", c.Dial),
}, nil }, nil
} }

17
transport/cache_test.go
View File

@ -17,6 +17,7 @@ limitations under the License.
package transport package transport
import ( import (
"net"
"net/http" "net/http"
"testing" "testing"
) )
@ -53,6 +54,8 @@ func TestTLSConfigKey(t *testing.T) {
// Make sure config fields that affect the tls config affect the cache key // Make sure config fields that affect the tls config affect the cache key
uniqueConfigurations := map[string]*Config{ uniqueConfigurations := map[string]*Config{
"no tls": {}, "no tls": {},
"dialer": {Dial: net.Dial},
"dialer2": {Dial: func(network, address string) (net.Conn, error) { return nil, nil }},
"insecure": {TLS: TLSConfig{Insecure: true}}, "insecure": {TLS: TLSConfig{Insecure: true}},
"cadata 1": {TLS: TLSConfig{CAData: []byte{1}}}, "cadata 1": {TLS: TLSConfig{CAData: []byte{1}}},
"cadata 2": {TLS: TLSConfig{CAData: []byte{2}}}, "cadata 2": {TLS: TLSConfig{CAData: []byte{2}}},
@ -104,11 +107,6 @@ func TestTLSConfigKey(t *testing.T) {
} }
for nameA, valueA := range uniqueConfigurations { for nameA, valueA := range uniqueConfigurations {
for nameB, valueB := range uniqueConfigurations { for nameB, valueB := range uniqueConfigurations {
// Don't compare to ourselves
if nameA == nameB {
continue
}
keyA, err := tlsConfigKey(valueA) keyA, err := tlsConfigKey(valueA)
if err != nil { if err != nil {
t.Errorf("Unexpected error for %q: %v", nameA, err) t.Errorf("Unexpected error for %q: %v", nameA, err)
@ -119,6 +117,15 @@ func TestTLSConfigKey(t *testing.T) {
t.Errorf("Unexpected error for %q: %v", nameB, err) t.Errorf("Unexpected error for %q: %v", nameB, err)
continue continue
} }
// Make sure we get the same key on the same config
if nameA == nameB {
if keyA != keyB {
t.Errorf("Expected identical cache keys for %q and %q, got:\n\t%s\n\t%s", nameA, nameB, keyA, keyB)
}
continue
}
if keyA == keyB { if keyA == keyB {
t.Errorf("Expected unique cache keys for %q and %q, got:\n\t%s\n\t%s", nameA, nameB, keyA, keyB) t.Errorf("Expected unique cache keys for %q and %q, got:\n\t%s\n\t%s", nameA, nameB, keyA, keyB)
continue continue

2
transport/transport.go
View File

@ -52,7 +52,7 @@ func New(config *Config) (http.RoundTripper, error) {
// TLSConfigFor returns a tls.Config that will provide the transport level security defined // TLSConfigFor returns a tls.Config that will provide the transport level security defined
// by the provided Config. Will return nil if no transport level security is requested. // by the provided Config. Will return nil if no transport level security is requested.
func TLSConfigFor(c *Config) (*tls.Config, error) { func TLSConfigFor(c *Config) (*tls.Config, error) {
if !(c.HasCA() || c.HasCertAuth() || c.TLS.Insecure) { if !(c.HasCA() || c.HasCertAuth() || c.TLS.Insecure || len(c.TLS.ServerName) > 0) {
return nil, nil return nil, nil
} }
if c.HasCA() && c.TLS.Insecure { if c.HasCA() && c.TLS.Insecure {

7
transport/transport_test.go
View File

@ -101,6 +101,13 @@ func TestNew(t *testing.T) {
Config: &Config{}, Config: &Config{},
}, },
"server name": {
TLS: true,
Config: &Config{TLS: TLSConfig{
ServerName: "foo",
}},
},
"ca transport": { "ca transport": {
TLS: true, TLS: true,
Config: &Config{ Config: &Config{