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StatefulSet e2e: verify stateful pod hostname #36022

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merged 1 commit into from
Nov 4, 2016
Merged

StatefulSet e2e: verify stateful pod hostname #36022

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19 changes: 18 additions & 1 deletion test/e2e/petset.go
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Original file line number Diff line number Diff line change
Expand Up @@ -125,11 +125,14 @@ var _ = framework.KubeDescribe("StatefulSet [Slow] [Feature:PetSet]", func() {
By("Verifying statefulset mounted data directory is usable")
ExpectNoError(pst.checkMount(ps, "/data"))

By("Verifying statefulset provides a stable hostname for each pod")
ExpectNoError(pst.checkHostname(ps))

cmd := "echo $(hostname) > /data/hostname; sync;"
By("Running " + cmd + " in all pets")
ExpectNoError(pst.execInPets(ps, cmd))

By("Restarting pet set " + ps.Name)
By("Restarting statefulset " + ps.Name)
pst.restart(ps)
pst.saturate(ps)

Expand Down Expand Up @@ -572,6 +575,20 @@ func (p *statefulSetTester) execInPets(ps *apps.StatefulSet, cmd string) error {
return nil
}

func (p *statefulSetTester) checkHostname(ps *apps.StatefulSet) error {
cmd := "printf $(hostname)"
podList := p.getPodList(ps)
for _, pet := range podList.Items {
hostname, err := framework.RunHostCmd(pet.Namespace, pet.Name, cmd)
if err != nil {
return err
}
if hostname != pet.Name {
return fmt.Errorf("unexpected hostname (%s) and stateful pod name (%s) not equal", hostname, pet.Name)
}
}
return nil
}
func (p *statefulSetTester) saturate(ps *apps.StatefulSet) {
// TODO: Watch events and check that creation timestamps don't overlap
var i int32
Expand Down