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Adding taint toleration error reasons

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This commit is contained in:
Shawn Rebello 2020-01-24 02:50:55 +05:30
parent c5982d03cf
commit 22bd26fefb
3 changed files with 50 additions and 28 deletions
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37
pkg/apis/core/v1/helper/helpers.go
View File

@ -395,22 +395,37 @@ type taintsFilterFunc func(*v1.Taint) bool
// TolerationsTolerateTaintsWithFilter checks if given tolerations tolerates
// all the taints that apply to the filter in given taint list.
// DEPRECATED: Please use FindMatchingUntoleratedTaint instead.
func TolerationsTolerateTaintsWithFilter(tolerations []v1.Toleration, taints []v1.Taint, applyFilter taintsFilterFunc) bool {
if len(taints) == 0 {
return true
}
_, isUntolerated := FindMatchingUntoleratedTaint(taints, tolerations, applyFilter)
return !isUntolerated
}
for i := range taints {
if applyFilter != nil && !applyFilter(&taints[i]) {
// FindMatchingUntoleratedTaint checks if the given tolerations tolerates
// all the filtered taints, and returns the first taint without a toleration
func FindMatchingUntoleratedTaint(taints []v1.Taint, tolerations []v1.Toleration, inclusionFilter taintsFilterFunc) (v1.Taint, bool) {
filteredTaints := getFilteredTaints(taints, inclusionFilter)
for _, taint := range filteredTaints {
if !TolerationsTolerateTaint(tolerations, &taint) {
return taint, true
}
}
return v1.Taint{}, false
}
// getFilteredTaints returns a list of taints satisfying the filter predicate
func getFilteredTaints(taints []v1.Taint, inclusionFilter taintsFilterFunc) []v1.Taint {
if inclusionFilter == nil {
return taints
}
filteredTaints := []v1.Taint{}
for _, taint := range taints {
if !inclusionFilter(&taint) {
continue
}
if !TolerationsTolerateTaint(tolerations, &taints[i]) {
return false
}
filteredTaints = append(filteredTaints, taint)
}
return true
return filteredTaints
}
// Returns true and list of Tolerations matching all Taints if all are tolerated, or false otherwise.

11
pkg/scheduler/framework/plugins/tainttoleration/taint_toleration.go
View File

@ -62,14 +62,19 @@ func (pl *TaintToleration) Filter(ctx context.Context, state *framework.CycleSta
return framework.NewStatus(framework.Error, err.Error())
}
if v1helper.TolerationsTolerateTaintsWithFilter(pod.Spec.Tolerations, taints, func(t *v1.Taint) bool {
filterPredicate := func(t *v1.Taint) bool {
// PodToleratesNodeTaints is only interested in NoSchedule and NoExecute taints.
return t.Effect == v1.TaintEffectNoSchedule || t.Effect == v1.TaintEffectNoExecute
}) {
}
taint, isUntolerated := v1helper.FindMatchingUntoleratedTaint(taints, pod.Spec.Tolerations, filterPredicate)
if !isUntolerated {
return nil
}
return framework.NewStatus(framework.UnschedulableAndUnresolvable, ErrReasonNotMatch)
errReason := fmt.Sprintf("node(s) had taint {%s: %s}, that the pod didn't tolerate",
taint.Key, taint.Value)
return framework.NewStatus(framework.UnschedulableAndUnresolvable, errReason)
}
// postFilterState computed at PostFilter and used at Score.

30
pkg/scheduler/framework/plugins/tainttoleration/taint_toleration_test.go
View File

@ -260,7 +260,6 @@ func TestTaintTolerationScore(t *testing.T) {
}
func TestTaintTolerationFilter(t *testing.T) {
unschedulable := framework.NewStatus(framework.UnschedulableAndUnresolvable, ErrReasonNotMatch)
tests := []struct {
name string
pod *v1.Pod
@ -268,10 +267,11 @@ func TestTaintTolerationFilter(t *testing.T) {
wantStatus *framework.Status
}{
{
name: "A pod having no tolerations can't be scheduled onto a node with nonempty taints",
pod: podWithTolerations("pod1", []v1.Toleration{}),
node: nodeWithTaints("nodeA", []v1.Taint{{Key: "dedicated", Value: "user1", Effect: "NoSchedule"}}),
wantStatus: unschedulable,
name: "A pod having no tolerations can't be scheduled onto a node with nonempty taints",
pod: podWithTolerations("pod1", []v1.Toleration{}),
node: nodeWithTaints("nodeA", []v1.Taint{{Key: "dedicated", Value: "user1", Effect: "NoSchedule"}}),
wantStatus: framework.NewStatus(framework.UnschedulableAndUnresolvable,
"node(s) had taint {dedicated: user1}, that the pod didn't tolerate"),
},
{
name: "A pod which can be scheduled on a dedicated node assigned to user1 with effect NoSchedule",
@ -279,10 +279,11 @@ func TestTaintTolerationFilter(t *testing.T) {
node: nodeWithTaints("nodeA", []v1.Taint{{Key: "dedicated", Value: "user1", Effect: "NoSchedule"}}),
},
{
name: "A pod which can't be scheduled on a dedicated node assigned to user2 with effect NoSchedule",
pod: podWithTolerations("pod1", []v1.Toleration{{Key: "dedicated", Operator: "Equal", Value: "user2", Effect: "NoSchedule"}}),
node: nodeWithTaints("nodeA", []v1.Taint{{Key: "dedicated", Value: "user1", Effect: "NoSchedule"}}),
wantStatus: unschedulable,
name: "A pod which can't be scheduled on a dedicated node assigned to user2 with effect NoSchedule",
pod: podWithTolerations("pod1", []v1.Toleration{{Key: "dedicated", Operator: "Equal", Value: "user2", Effect: "NoSchedule"}}),
node: nodeWithTaints("nodeA", []v1.Taint{{Key: "dedicated", Value: "user1", Effect: "NoSchedule"}}),
wantStatus: framework.NewStatus(framework.UnschedulableAndUnresolvable,
"node(s) had taint {dedicated: user1}, that the pod didn't tolerate"),
},
{
name: "A pod can be scheduled onto the node, with a toleration uses operator Exists that tolerates the taints on the node",
@ -303,9 +304,10 @@ func TestTaintTolerationFilter(t *testing.T) {
{
name: "A pod has a toleration that keys and values match the taint on the node, but (non-empty) effect doesn't match, " +
"can't be scheduled onto the node",
pod: podWithTolerations("pod1", []v1.Toleration{{Key: "foo", Operator: "Equal", Value: "bar", Effect: "PreferNoSchedule"}}),
node: nodeWithTaints("nodeA", []v1.Taint{{Key: "foo", Value: "bar", Effect: "NoSchedule"}}),
wantStatus: unschedulable,
pod: podWithTolerations("pod1", []v1.Toleration{{Key: "foo", Operator: "Equal", Value: "bar", Effect: "PreferNoSchedule"}}),
node: nodeWithTaints("nodeA", []v1.Taint{{Key: "foo", Value: "bar", Effect: "NoSchedule"}}),
wantStatus: framework.NewStatus(framework.UnschedulableAndUnresolvable,
"node(s) had taint {foo: bar}, that the pod didn't tolerate"),
},
{
name: "The pod has a toleration that keys and values match the taint on the node, the effect of toleration is empty, " +
@ -315,13 +317,13 @@ func TestTaintTolerationFilter(t *testing.T) {
},
{
name: "The pod has a toleration that key and value don't match the taint on the node, " +
"but the effect of taint on node is PreferNochedule. Pod can be scheduled onto the node",
"but the effect of taint on node is PreferNoSchedule. Pod can be scheduled onto the node",
pod: podWithTolerations("pod1", []v1.Toleration{{Key: "dedicated", Operator: "Equal", Value: "user2", Effect: "NoSchedule"}}),
node: nodeWithTaints("nodeA", []v1.Taint{{Key: "dedicated", Value: "user1", Effect: "PreferNoSchedule"}}),
},
{
name: "The pod has no toleration, " +
"but the effect of taint on node is PreferNochedule. Pod can be scheduled onto the node",
"but the effect of taint on node is PreferNoSchedule. Pod can be scheduled onto the node",
pod: podWithTolerations("pod1", []v1.Toleration{}),
node: nodeWithTaints("nodeA", []v1.Taint{{Key: "dedicated", Value: "user1", Effect: "PreferNoSchedule"}}),
},