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Merge pull request #106164 from nilo19/fix/route

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fix: remove outdated ipv4 route when the corresponding node is deleted
This commit is contained in:
Kubernetes Prow Robot 2022-01-13 22:14:27 -08:00 committed by GitHub
commit 03bcfab1a6
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2 changed files with 95 additions and 2 deletions
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28
staging/src/k8s.io/legacy-cloud-providers/azure/azure_routes.go
View File

@ -111,6 +111,7 @@ func (d *delayedRouteUpdater) updateRoutes() {
// No need to do any updating. // No need to do any updating.
if len(d.routesToUpdate) == 0 { if len(d.routesToUpdate) == 0 {
klog.V(6).Info("updateRoutes: nothing to update, returning")
return return
} }
@ -217,6 +218,8 @@ func (d *delayedRouteUpdater) cleanupOutdatedRoutes(existingRoutes []network.Rou
existingRouteName := to.String(existingRoutes[i].Name) existingRouteName := to.String(existingRoutes[i].Name)
split := strings.Split(existingRouteName, routeNameSeparator) split := strings.Split(existingRouteName, routeNameSeparator)
klog.V(4).Infof("cleanupOutdatedRoutes: checking route %s", existingRouteName)
// filter out unmanaged routes // filter out unmanaged routes
deleteRoute := false deleteRoute := false
if d.az.nodeNames.Has(split[0]) { if d.az.nodeNames.Has(split[0]) {
@ -467,9 +470,8 @@ func (az *Cloud) DeleteRoute(ctx context.Context, clusterName string, kubeRoute
return nil return nil
} }
klog.V(2).Infof("DeleteRoute: deleting route. clusterName=%q instance=%q cidr=%q", clusterName, kubeRoute.TargetNode, kubeRoute.DestinationCIDR)
routeName := mapNodeNameToRouteName(az.ipv6DualStackEnabled, kubeRoute.TargetNode, string(kubeRoute.DestinationCIDR)) routeName := mapNodeNameToRouteName(az.ipv6DualStackEnabled, kubeRoute.TargetNode, string(kubeRoute.DestinationCIDR))
klog.V(2).Infof("DeleteRoute: deleting route. clusterName=%q instance=%q cidr=%q routeName=%q", clusterName, kubeRoute.TargetNode, kubeRoute.DestinationCIDR, routeName)
route := network.Route{ route := network.Route{
Name: to.StringPtr(routeName), Name: to.StringPtr(routeName),
RoutePropertiesFormat: &network.RoutePropertiesFormat{}, RoutePropertiesFormat: &network.RoutePropertiesFormat{},
@ -487,6 +489,28 @@ func (az *Cloud) DeleteRoute(ctx context.Context, clusterName string, kubeRoute
return err return err
} }
// Remove outdated ipv4 routes as well
if az.ipv6DualStackEnabled {
routeNameWithoutIPV6Suffix := strings.Split(routeName, routeNameSeparator)[0]
klog.V(2).Infof("DeleteRoute: deleting route. clusterName=%q instance=%q cidr=%q routeName=%q", clusterName, kubeRoute.TargetNode, kubeRoute.DestinationCIDR, routeNameWithoutIPV6Suffix)
route := network.Route{
Name: to.StringPtr(routeNameWithoutIPV6Suffix),
RoutePropertiesFormat: &network.RoutePropertiesFormat{},
}
op, err := az.routeUpdater.addRouteOperation(routeOperationDelete, route)
if err != nil {
klog.Errorf("DeleteRoute failed for node %q with error: %v", kubeRoute.TargetNode, err)
return err
}
// Wait for operation complete.
err = op.wait()
if err != nil {
klog.Errorf("DeleteRoute failed for node %q with error: %v", kubeRoute.TargetNode, err)
return err
}
}
klog.V(2).Infof("DeleteRoute: route deleted. clusterName=%q instance=%q cidr=%q", clusterName, kubeRoute.TargetNode, kubeRoute.DestinationCIDR) klog.V(2).Infof("DeleteRoute: route deleted. clusterName=%q instance=%q cidr=%q", clusterName, kubeRoute.TargetNode, kubeRoute.DestinationCIDR)
isOperationSucceeded = true isOperationSucceeded = true

69
staging/src/k8s.io/legacy-cloud-providers/azure/azure_routes_test.go
View File

@ -741,3 +741,72 @@ func TestCleanupOutdatedRoutes(t *testing.T) {
}) })
} }
} }
func TestDeleteRouteDualStack(t *testing.T) {
ctrl := gomock.NewController(t)
defer ctrl.Finish()
routeTableClient := mockroutetableclient.NewMockInterface(ctrl)
cloud := &Cloud{
RouteTablesClient: routeTableClient,
Config: Config{
RouteTableResourceGroup: "foo",
RouteTableName: "bar",
Location: "location",
},
unmanagedNodes: sets.NewString(),
nodeInformerSynced: func() bool { return true },
ipv6DualStackEnabled: true,
}
cache, _ := cloud.newRouteTableCache()
cloud.rtCache = cache
cloud.routeUpdater = newDelayedRouteUpdater(cloud, 100*time.Millisecond)
go cloud.routeUpdater.run()
route := cloudprovider.Route{
TargetNode: "node",
DestinationCIDR: "1.2.3.4/24",
}
routeName := mapNodeNameToRouteName(true, route.TargetNode, route.DestinationCIDR)
routeNameIPV4 := mapNodeNameToRouteName(false, route.TargetNode, route.DestinationCIDR)
routeTables := network.RouteTable{
Name: &cloud.RouteTableName,
Location: &cloud.Location,
RouteTablePropertiesFormat: &network.RouteTablePropertiesFormat{
Routes: &[]network.Route{
{
Name: &routeName,
},
{
Name: &routeNameIPV4,
},
},
},
}
routeTablesAfterFirstDeletion := network.RouteTable{
Name: &cloud.RouteTableName,
Location: &cloud.Location,
RouteTablePropertiesFormat: &network.RouteTablePropertiesFormat{
Routes: &[]network.Route{
{
Name: &routeNameIPV4,
},
},
},
}
routeTablesAfterSecondDeletion := network.RouteTable{
Name: &cloud.RouteTableName,
Location: &cloud.Location,
RouteTablePropertiesFormat: &network.RouteTablePropertiesFormat{
Routes: &[]network.Route{},
},
}
routeTableClient.EXPECT().Get(gomock.Any(), cloud.RouteTableResourceGroup, cloud.RouteTableName, "").Return(routeTables, nil).AnyTimes()
routeTableClient.EXPECT().CreateOrUpdate(gomock.Any(), cloud.RouteTableResourceGroup, cloud.RouteTableName, routeTablesAfterFirstDeletion, "").Return(nil)
routeTableClient.EXPECT().CreateOrUpdate(gomock.Any(), cloud.RouteTableResourceGroup, cloud.RouteTableName, routeTablesAfterSecondDeletion, "").Return(nil)
err := cloud.DeleteRoute(context.TODO(), "cluster", &route)
if err != nil {
t.Errorf("unexpected error deleting route: %v", err)
t.FailNow()
}
}