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Merge pull request #92793 from feiskyer/fix-node-name

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Fix throttling issues when Azure VM computer name prefix is different from VMSS name
This commit is contained in:
Kubernetes Prow Robot 2020-07-04 20:44:49 -07:00 committed by GitHub
commit b9da08a33e
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2 changed files with 17 additions and 58 deletions
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25
staging/src/k8s.io/legacy-cloud-providers/azure/azure_instances.go
View File

@ -21,7 +21,7 @@ package azure
import (
"context"
"fmt"
"strconv"
"os"
"strings"
v1 "k8s.io/api/core/v1"
@ -36,6 +36,10 @@ const (
vmPowerStateStopped = "stopped"
vmPowerStateDeallocated = "deallocated"
vmPowerStateDeallocating = "deallocating"
// nodeNameEnvironmentName is the environment variable name for getting node name.
// It is only used for out-of-tree cloud provider.
nodeNameEnvironmentName = "NODE_NAME"
)
var (
@ -310,17 +314,20 @@ func (az *Cloud) InstanceMetadataByProviderID(ctx context.Context, providerID st
}
func (az *Cloud) isCurrentInstance(name types.NodeName, metadataVMName string) (bool, error) {
var err error
nodeName := mapNodeNameToVMName(name)
// VMSS vmName is not same with hostname, use hostname instead.
if az.VMType == vmTypeVMSS {
// VMSS vmName is not same with hostname, construct the node name "{computer-name-prefix}{base-36-instance-id}".
// Refer https://docs.microsoft.com/en-us/azure/virtual-machine-scale-sets/virtual-machine-scale-sets-instance-ids#scale-set-vm-computer-name.
if ssName, instanceID, err := extractVmssVMName(metadataVMName); err == nil {
instance, err := strconv.ParseInt(instanceID, 10, 64)
if err != nil {
return false, fmt.Errorf("failed to parse VMSS instanceID %q: %v", instanceID, err)
}
metadataVMName = fmt.Sprintf("%s%06s", ssName, strconv.FormatInt(instance, 36))
metadataVMName, err = os.Hostname()
if err != nil {
return false, err
}
// Use name from env variable "NODE_NAME" if it is set.
nodeNameEnv := os.Getenv(nodeNameEnvironmentName)
if nodeNameEnv != "" {
metadataVMName = nodeNameEnv
}
}

50
staging/src/k8s.io/legacy-cloud-providers/azure/azure_instances_test.go
View File

@ -173,14 +173,6 @@ func TestInstanceID(t *testing.T) {
useInstanceMetadata: true,
expectedErrMsg: fmt.Errorf("failure of getting instance metadata"),
},
{
name: "NodeAddresses should report error if VMSS instanceID is invalid",
nodeName: "vm123456",
metadataName: "vmss_$123",
vmType: vmTypeVMSS,
useInstanceMetadata: true,
expectedErrMsg: fmt.Errorf("failed to parse VMSS instanceID %q: strconv.ParseInt: parsing %q: invalid syntax", "$123", "$123"),
},
{
name: "NodeAddresses should report error if cloud.vmSet is nil",
nodeName: "vm1",
@ -452,14 +444,6 @@ func TestNodeAddresses(t *testing.T) {
useInstanceMetadata: true,
expectedErrMsg: fmt.Errorf("getError"),
},
{
name: "NodeAddresses should report error if VMSS instanceID is invalid",
nodeName: "vm123456",
metadataName: "vmss_$123",
vmType: vmTypeVMSS,
useInstanceMetadata: true,
expectedErrMsg: fmt.Errorf("failed to parse VMSS instanceID %q: strconv.ParseInt: parsing %q: invalid syntax", "$123", "$123"),
},
{
name: "NodeAddresses should report error if cloud.vmSet is nil",
nodeName: "vm1",
@ -769,14 +753,6 @@ func TestInstanceMetadataByProviderID(t *testing.T) {
useCustomImsCache: true,
expectedErrMsg: fmt.Errorf("getError"),
},
{
name: "InstanceMetadataByProviderID should report error if VMSS instanceID is invalid",
metadataName: "vmss_$123",
providerID: providerID,
vmType: vmTypeVMSS,
useInstanceMetadata: true,
expectedErrMsg: fmt.Errorf("failed to parse VMSS instanceID %q: strconv.ParseInt: parsing %q: invalid syntax", "$123", "$123"),
},
{
name: "InstanceMetadataByProviderID should get metadata from Azure API if cloud.UseInstanceMetadata is false",
metadataName: "vm1",
@ -920,7 +896,7 @@ func TestInstanceMetadataByProviderID(t *testing.T) {
func TestIsCurrentInstance(t *testing.T) {
cloud := &Cloud{
Config: Config{
VMType: vmTypeVMSS,
VMType: vmTypeStandard,
},
}
testcases := []struct {
@ -939,22 +915,6 @@ func TestIsCurrentInstance(t *testing.T) {
metadataVMName: "node2",
expected: false,
},
{
nodeName: "vmss000001",
metadataVMName: "vmss_1",
expected: true,
},
{
nodeName: "vmss_2",
metadataVMName: "vmss000000",
expected: false,
},
{
nodeName: "vmss123456",
metadataVMName: "vmss_$123",
expected: false,
expectedErrMsg: fmt.Errorf("failed to parse VMSS instanceID %q: strconv.ParseInt: parsing %q: invalid syntax", "$123", "$123"),
},
}
for _, test := range testcases {
@ -1048,14 +1008,6 @@ func TestInstanceTypeByProviderID(t *testing.T) {
useCustomImsCache: true,
expectedErrMsg: fmt.Errorf("getError"),
},
{
name: "NodeAddresses should report error if VMSS instanceID is invalid",
nodeName: "vm123456",
metadataName: "vmss_$123",
providerID: "azure:///subscriptions/subscription/resourceGroups/rg/providers/Microsoft.Compute/virtualMachines/vm1",
vmType: vmTypeVMSS,
expectedErrMsg: fmt.Errorf("failed to parse VMSS instanceID %q: strconv.ParseInt: parsing %q: invalid syntax", "$123", "$123"),
},
}
for _, test := range testcases {