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daemonset: apply predicated when placing daemon pods

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This commit is contained in:
Mike Danese
2016-01-27 22:13:05 -08:00
parent 458eb5284a
commit e2fecf36b9
3 changed files with 166 additions and 18 deletions
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119
pkg/controller/daemon/controller_test.go
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@@ -22,6 +22,7 @@ import (
"testing"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/resource"
"k8s.io/kubernetes/pkg/api/testapi"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/apis/extensions"
@@ -200,17 +201,127 @@ func TestNotReadNodeDaemonDoesNotLaunchPod(t *testing.T) {
syncAndValidateDaemonSets(t, manager, ds, podControl, 0, 0)
}
// DaemonSets should not place onto Unschedulable nodes
func TestUnschedulableNodeDaemonDoesNotLaunchPod(t *testing.T) {
// DaemonSets should not place onto OutOfDisk nodes
func TestOutOfDiskNodeDaemonDoesNotLaunchPod(t *testing.T) {
manager, podControl := newTestController()
node := newNode("not-ready", nil)
node.Spec.Unschedulable = true
node := newNode("not-enough-disk", nil)
node.Status.Conditions = []api.NodeCondition{{Type: api.NodeOutOfDisk, Status: api.ConditionTrue}}
manager.nodeStore.Add(node)
ds := newDaemonSet("foo")
manager.dsStore.Add(ds)
syncAndValidateDaemonSets(t, manager, ds, podControl, 0, 0)
}
// DaemonSets should not place onto nodes with insufficient free resource
func TestInsufficentCapacityNodeDaemonDoesNotLaunchPod(t *testing.T) {
podSpec := api.PodSpec{
NodeName: "too-much-mem",
Containers: []api.Container{{
Resources: api.ResourceRequirements{
Requests: api.ResourceList{
api.ResourceMemory: resource.MustParse("75M"),
api.ResourceCPU: resource.MustParse("75m"),
},
},
}},
}
manager, podControl := newTestController()
node := newNode("too-much-mem", nil)
node.Status.Allocatable = api.ResourceList{
api.ResourceMemory: resource.MustParse("100M"),
api.ResourceCPU: resource.MustParse("200m"),
}
manager.nodeStore.Add(node)
manager.podStore.Add(&api.Pod{
Spec: podSpec,
})
ds := newDaemonSet("foo")
ds.Spec.Template.Spec = podSpec
manager.dsStore.Add(ds)
syncAndValidateDaemonSets(t, manager, ds, podControl, 0, 0)
}
// DaemonSets should place onto nodes with sufficient free resource
func TestSufficentCapacityNodeDaemonLaunchesPod(t *testing.T) {
podSpec := api.PodSpec{
NodeName: "not-too-much-mem",
Containers: []api.Container{{
Resources: api.ResourceRequirements{
Requests: api.ResourceList{
api.ResourceMemory: resource.MustParse("75M"),
api.ResourceCPU: resource.MustParse("75m"),
},
},
}},
}
manager, podControl := newTestController()
node := newNode("not-too-much-mem", nil)
node.Status.Allocatable = api.ResourceList{
api.ResourceMemory: resource.MustParse("200M"),
api.ResourceCPU: resource.MustParse("200m"),
}
manager.nodeStore.Add(node)
manager.podStore.Add(&api.Pod{
Spec: podSpec,
})
ds := newDaemonSet("foo")
ds.Spec.Template.Spec = podSpec
manager.dsStore.Add(ds)
syncAndValidateDaemonSets(t, manager, ds, podControl, 1, 0)
}
// DaemonSets should not place onto nodes that would cause port conflicts
func TestPortConflictNodeDaemonDoesNotLaunchPod(t *testing.T) {
podSpec := api.PodSpec{
NodeName: "port-conflict",
Containers: []api.Container{{
Ports: []api.ContainerPort{{
HostPort: 666,
}},
}},
}
manager, podControl := newTestController()
node := newNode("port-conflict", nil)
manager.nodeStore.Add(node)
manager.podStore.Add(&api.Pod{
Spec: podSpec,
})
ds := newDaemonSet("foo")
ds.Spec.Template.Spec = podSpec
manager.dsStore.Add(ds)
syncAndValidateDaemonSets(t, manager, ds, podControl, 0, 0)
}
// DaemonSets should place onto nodes that would not cause port conflicts
func TestNoPortConflictNodeDaemonLaunchesPod(t *testing.T) {
podSpec1 := api.PodSpec{
NodeName: "no-port-conflict",
Containers: []api.Container{{
Ports: []api.ContainerPort{{
HostPort: 6661,
}},
}},
}
podSpec2 := api.PodSpec{
NodeName: "no-port-conflict",
Containers: []api.Container{{
Ports: []api.ContainerPort{{
HostPort: 6662,
}},
}},
}
manager, podControl := newTestController()
node := newNode("no-port-conflict", nil)
manager.nodeStore.Add(node)
manager.podStore.Add(&api.Pod{
Spec: podSpec1,
})
ds := newDaemonSet("foo")
ds.Spec.Template.Spec = podSpec2
manager.dsStore.Add(ds)
syncAndValidateDaemonSets(t, manager, ds, podControl, 1, 0)
}
// Controller should not create pods on nodes which have daemon pods, and should remove excess pods from nodes that have extra pods.
func TestDealsWithExistingPods(t *testing.T) {
manager, podControl := newTestController()