Beispiel #1
0
// Validates that a Quantity is not negative
func ValidateNonnegativeQuantity(value resource.Quantity, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}
	if value.Cmp(resource.Quantity{}) < 0 {
		allErrs = append(allErrs, field.Invalid(fldPath, value.String(), isNegativeErrorMsg))
	}
	return allErrs
}
Beispiel #2
0
func addCpuLimit(opts []*unit.UnitOption, limit *resource.Quantity) ([]*unit.UnitOption, error) {
	if limit.Value() > resource.MaxMilliValue {
		return nil, fmt.Errorf("cpu limit exceeds the maximum millivalue: %v", limit.String())
	}
	quota := strconv.Itoa(int(limit.MilliValue()/10)) + "%"
	opts = append(opts, unit.NewUnitOption("Service", "CPUQuota", quota))
	return opts, nil
}
Beispiel #3
0
// FuzzerFor can randomly populate api objects that are destined for version.
func FuzzerFor(t *testing.T, version unversioned.GroupVersion, src rand.Source) *fuzz.Fuzzer {
	f := fuzz.New().NilChance(.5).NumElements(1, 1)
	if src != nil {
		f.RandSource(src)
	}
	f.Funcs(
		func(j *int, c fuzz.Continue) {
			*j = int(c.Int31())
		},
		func(j **int, c fuzz.Continue) {
			if c.RandBool() {
				i := int(c.Int31())
				*j = &i
			} else {
				*j = nil
			}
		},
		func(q *resource.Quantity, c fuzz.Continue) {
			*q = *resource.NewQuantity(c.Int63n(1000), resource.DecimalExponent)
		},
		func(j *runtime.TypeMeta, c fuzz.Continue) {
			// We have to customize the randomization of TypeMetas because their
			// APIVersion and Kind must remain blank in memory.
			j.APIVersion = ""
			j.Kind = ""
		},
		func(j *unversioned.TypeMeta, c fuzz.Continue) {
			// We have to customize the randomization of TypeMetas because their
			// APIVersion and Kind must remain blank in memory.
			j.APIVersion = ""
			j.Kind = ""
		},
		func(j *api.ObjectMeta, c fuzz.Continue) {
			j.Name = c.RandString()
			j.ResourceVersion = strconv.FormatUint(c.RandUint64(), 10)
			j.SelfLink = c.RandString()
			j.UID = types.UID(c.RandString())
			j.GenerateName = c.RandString()

			var sec, nsec int64
			c.Fuzz(&sec)
			c.Fuzz(&nsec)
			j.CreationTimestamp = unversioned.Unix(sec, nsec).Rfc3339Copy()
		},
		func(j *api.ObjectReference, c fuzz.Continue) {
			// We have to customize the randomization of TypeMetas because their
			// APIVersion and Kind must remain blank in memory.
			j.APIVersion = c.RandString()
			j.Kind = c.RandString()
			j.Namespace = c.RandString()
			j.Name = c.RandString()
			j.ResourceVersion = strconv.FormatUint(c.RandUint64(), 10)
			j.FieldPath = c.RandString()
		},
		func(j *unversioned.ListMeta, c fuzz.Continue) {
			j.ResourceVersion = strconv.FormatUint(c.RandUint64(), 10)
			j.SelfLink = c.RandString()
		},
		func(j *api.ListOptions, c fuzz.Continue) {
			label, _ := labels.Parse("a=b")
			j.LabelSelector = label
			field, _ := fields.ParseSelector("a=b")
			j.FieldSelector = field
		},
		func(j *api.PodExecOptions, c fuzz.Continue) {
			j.Stdout = true
			j.Stderr = true
		},
		func(j *api.PodAttachOptions, c fuzz.Continue) {
			j.Stdout = true
			j.Stderr = true
		},
		func(s *api.PodSpec, c fuzz.Continue) {
			c.FuzzNoCustom(s)
			// has a default value
			ttl := int64(30)
			if c.RandBool() {
				ttl = int64(c.Uint32())
			}
			s.TerminationGracePeriodSeconds = &ttl

			c.Fuzz(s.SecurityContext)

			if s.SecurityContext == nil {
				s.SecurityContext = new(api.PodSecurityContext)
			}
		},
		func(j *api.PodPhase, c fuzz.Continue) {
			statuses := []api.PodPhase{api.PodPending, api.PodRunning, api.PodFailed, api.PodUnknown}
			*j = statuses[c.Rand.Intn(len(statuses))]
		},
		func(j *api.Binding, c fuzz.Continue) {
			c.Fuzz(&j.ObjectMeta)
			j.Target.Name = c.RandString()
		},
		func(j *api.ReplicationControllerSpec, c fuzz.Continue) {
			c.FuzzNoCustom(j) // fuzz self without calling this function again
			//j.TemplateRef = nil // this is required for round trip
		},
		func(j *extensions.DeploymentStrategy, c fuzz.Continue) {
			c.FuzzNoCustom(j) // fuzz self without calling this function again
			// Ensure that strategyType is one of valid values.
			strategyTypes := []extensions.DeploymentStrategyType{extensions.RecreateDeploymentStrategyType, extensions.RollingUpdateDeploymentStrategyType}
			j.Type = strategyTypes[c.Rand.Intn(len(strategyTypes))]
			if j.Type != extensions.RollingUpdateDeploymentStrategyType {
				j.RollingUpdate = nil
			} else {
				rollingUpdate := extensions.RollingUpdateDeployment{}
				if c.RandBool() {
					rollingUpdate.MaxUnavailable = intstr.FromInt(int(c.RandUint64()))
					rollingUpdate.MaxSurge = intstr.FromInt(int(c.RandUint64()))
				} else {
					rollingUpdate.MaxSurge = intstr.FromString(fmt.Sprintf("%d%%", c.RandUint64()))
				}
				j.RollingUpdate = &rollingUpdate
			}
		},
		func(j *batch.JobSpec, c fuzz.Continue) {
			c.FuzzNoCustom(j) // fuzz self without calling this function again
			completions := int32(c.Rand.Int31())
			parallelism := int32(c.Rand.Int31())
			j.Completions = &completions
			j.Parallelism = &parallelism
			if c.Rand.Int31()%2 == 0 {
				j.ManualSelector = newBool(true)
			} else {
				j.ManualSelector = nil
			}
		},
		func(sj *batch.ScheduledJobSpec, c fuzz.Continue) {
			c.FuzzNoCustom(sj)
			suspend := c.RandBool()
			sj.Suspend = &suspend
			sds := int64(c.RandUint64())
			sj.StartingDeadlineSeconds = &sds
			sj.Schedule = c.RandString()
		},
		func(cp *batch.ConcurrencyPolicy, c fuzz.Continue) {
			policies := []batch.ConcurrencyPolicy{batch.AllowConcurrent, batch.ForbidConcurrent, batch.ReplaceConcurrent}
			*cp = policies[c.Rand.Intn(len(policies))]
		},
		func(j *api.List, c fuzz.Continue) {
			c.FuzzNoCustom(j) // fuzz self without calling this function again
			// TODO: uncomment when round trip starts from a versioned object
			if false { //j.Items == nil {
				j.Items = []runtime.Object{}
			}
		},
		func(j *runtime.Object, c fuzz.Continue) {
			// TODO: uncomment when round trip starts from a versioned object
			if true { //c.RandBool() {
				*j = &runtime.Unknown{
					// We do not set TypeMeta here because it is not carried through a round trip
					Raw:         []byte(`{"apiVersion":"unknown.group/unknown","kind":"Something","someKey":"someValue"}`),
					ContentType: runtime.ContentTypeJSON,
				}
			} else {
				types := []runtime.Object{&api.Pod{}, &api.ReplicationController{}}
				t := types[c.Rand.Intn(len(types))]
				c.Fuzz(t)
				*j = t
			}
		},
		func(q *api.ResourceRequirements, c fuzz.Continue) {
			randomQuantity := func() resource.Quantity {
				var q resource.Quantity
				c.Fuzz(&q)
				// precalc the string for benchmarking purposes
				_ = q.String()
				return q
			}
			q.Limits = make(api.ResourceList)
			q.Requests = make(api.ResourceList)
			cpuLimit := randomQuantity()
			q.Limits[api.ResourceCPU] = *cpuLimit.Copy()
			q.Requests[api.ResourceCPU] = *cpuLimit.Copy()
			memoryLimit := randomQuantity()
			q.Limits[api.ResourceMemory] = *memoryLimit.Copy()
			q.Requests[api.ResourceMemory] = *memoryLimit.Copy()
			storageLimit := randomQuantity()
			q.Limits[api.ResourceStorage] = *storageLimit.Copy()
			q.Requests[api.ResourceStorage] = *storageLimit.Copy()
		},
		func(q *api.LimitRangeItem, c fuzz.Continue) {
			var cpuLimit resource.Quantity
			c.Fuzz(&cpuLimit)

			q.Type = api.LimitTypeContainer
			q.Default = make(api.ResourceList)
			q.Default[api.ResourceCPU] = *(cpuLimit.Copy())

			q.DefaultRequest = make(api.ResourceList)
			q.DefaultRequest[api.ResourceCPU] = *(cpuLimit.Copy())

			q.Max = make(api.ResourceList)
			q.Max[api.ResourceCPU] = *(cpuLimit.Copy())

			q.Min = make(api.ResourceList)
			q.Min[api.ResourceCPU] = *(cpuLimit.Copy())

			q.MaxLimitRequestRatio = make(api.ResourceList)
			q.MaxLimitRequestRatio[api.ResourceCPU] = resource.MustParse("10")
		},
		func(p *api.PullPolicy, c fuzz.Continue) {
			policies := []api.PullPolicy{api.PullAlways, api.PullNever, api.PullIfNotPresent}
			*p = policies[c.Rand.Intn(len(policies))]
		},
		func(rp *api.RestartPolicy, c fuzz.Continue) {
			policies := []api.RestartPolicy{api.RestartPolicyAlways, api.RestartPolicyNever, api.RestartPolicyOnFailure}
			*rp = policies[c.Rand.Intn(len(policies))]
		},
		// Only api.DownwardAPIVolumeFile needs to have a specific func since FieldRef has to be
		// defaulted to a version otherwise roundtrip will fail
		// For the remaining volume plugins the default fuzzer is enough.
		func(m *api.DownwardAPIVolumeFile, c fuzz.Continue) {
			m.Path = c.RandString()
			versions := []string{"v1"}
			m.FieldRef = &api.ObjectFieldSelector{}
			m.FieldRef.APIVersion = versions[c.Rand.Intn(len(versions))]
			m.FieldRef.FieldPath = c.RandString()
		},
		func(vs *api.VolumeSource, c fuzz.Continue) {
			// Exactly one of the fields must be set.
			v := reflect.ValueOf(vs).Elem()
			i := int(c.RandUint64() % uint64(v.NumField()))
			t := v.Field(i).Addr()
			for v.Field(i).IsNil() {
				c.Fuzz(t.Interface())
			}
		},
		func(i *api.ISCSIVolumeSource, c fuzz.Continue) {
			i.ISCSIInterface = c.RandString()
			if i.ISCSIInterface == "" {
				i.ISCSIInterface = "default"
			}
		},
		func(d *api.DNSPolicy, c fuzz.Continue) {
			policies := []api.DNSPolicy{api.DNSClusterFirst, api.DNSDefault}
			*d = policies[c.Rand.Intn(len(policies))]
		},
		func(p *api.Protocol, c fuzz.Continue) {
			protocols := []api.Protocol{api.ProtocolTCP, api.ProtocolUDP}
			*p = protocols[c.Rand.Intn(len(protocols))]
		},
		func(p *api.ServiceAffinity, c fuzz.Continue) {
			types := []api.ServiceAffinity{api.ServiceAffinityClientIP, api.ServiceAffinityNone}
			*p = types[c.Rand.Intn(len(types))]
		},
		func(p *api.ServiceType, c fuzz.Continue) {
			types := []api.ServiceType{api.ServiceTypeClusterIP, api.ServiceTypeNodePort, api.ServiceTypeLoadBalancer}
			*p = types[c.Rand.Intn(len(types))]
		},
		func(ct *api.Container, c fuzz.Continue) {
			c.FuzzNoCustom(ct)                                          // fuzz self without calling this function again
			ct.TerminationMessagePath = "/" + ct.TerminationMessagePath // Must be non-empty
		},
		func(p *api.Probe, c fuzz.Continue) {
			c.FuzzNoCustom(p)
			// These fields have default values.
			intFieldsWithDefaults := [...]string{"TimeoutSeconds", "PeriodSeconds", "SuccessThreshold", "FailureThreshold"}
			v := reflect.ValueOf(p).Elem()
			for _, field := range intFieldsWithDefaults {
				f := v.FieldByName(field)
				if f.Int() == 0 {
					f.SetInt(1)
				}
			}
		},
		func(ev *api.EnvVar, c fuzz.Continue) {
			ev.Name = c.RandString()
			if c.RandBool() {
				ev.Value = c.RandString()
			} else {
				ev.ValueFrom = &api.EnvVarSource{}
				ev.ValueFrom.FieldRef = &api.ObjectFieldSelector{}

				var versions []unversioned.GroupVersion
				for _, testGroup := range testapi.Groups {
					versions = append(versions, *testGroup.GroupVersion())
				}

				ev.ValueFrom.FieldRef.APIVersion = versions[c.Rand.Intn(len(versions))].String()
				ev.ValueFrom.FieldRef.FieldPath = c.RandString()
			}
		},
		func(sc *api.SecurityContext, c fuzz.Continue) {
			c.FuzzNoCustom(sc) // fuzz self without calling this function again
			if c.RandBool() {
				priv := c.RandBool()
				sc.Privileged = &priv
			}

			if c.RandBool() {
				sc.Capabilities = &api.Capabilities{
					Add:  make([]api.Capability, 0),
					Drop: make([]api.Capability, 0),
				}
				c.Fuzz(&sc.Capabilities.Add)
				c.Fuzz(&sc.Capabilities.Drop)
			}
		},
		func(s *api.Secret, c fuzz.Continue) {
			c.FuzzNoCustom(s) // fuzz self without calling this function again
			s.Type = api.SecretTypeOpaque
		},
		func(r *api.RBDVolumeSource, c fuzz.Continue) {
			r.RBDPool = c.RandString()
			if r.RBDPool == "" {
				r.RBDPool = "rbd"
			}
			r.RadosUser = c.RandString()
			if r.RadosUser == "" {
				r.RadosUser = "******"
			}
			r.Keyring = c.RandString()
			if r.Keyring == "" {
				r.Keyring = "/etc/ceph/keyring"
			}
		},
		func(pv *api.PersistentVolume, c fuzz.Continue) {
			c.FuzzNoCustom(pv) // fuzz self without calling this function again
			types := []api.PersistentVolumePhase{api.VolumeAvailable, api.VolumePending, api.VolumeBound, api.VolumeReleased, api.VolumeFailed}
			pv.Status.Phase = types[c.Rand.Intn(len(types))]
			pv.Status.Message = c.RandString()
			reclamationPolicies := []api.PersistentVolumeReclaimPolicy{api.PersistentVolumeReclaimRecycle, api.PersistentVolumeReclaimRetain}
			pv.Spec.PersistentVolumeReclaimPolicy = reclamationPolicies[c.Rand.Intn(len(reclamationPolicies))]
		},
		func(pvc *api.PersistentVolumeClaim, c fuzz.Continue) {
			c.FuzzNoCustom(pvc) // fuzz self without calling this function again
			types := []api.PersistentVolumeClaimPhase{api.ClaimBound, api.ClaimPending, api.ClaimLost}
			pvc.Status.Phase = types[c.Rand.Intn(len(types))]
		},
		func(s *api.NamespaceSpec, c fuzz.Continue) {
			s.Finalizers = []api.FinalizerName{api.FinalizerKubernetes}
		},
		func(s *api.NamespaceStatus, c fuzz.Continue) {
			s.Phase = api.NamespaceActive
		},
		func(http *api.HTTPGetAction, c fuzz.Continue) {
			c.FuzzNoCustom(http)            // fuzz self without calling this function again
			http.Path = "/" + http.Path     // can't be blank
			http.Scheme = "x" + http.Scheme // can't be blank
		},
		func(ss *api.ServiceSpec, c fuzz.Continue) {
			c.FuzzNoCustom(ss) // fuzz self without calling this function again
			if len(ss.Ports) == 0 {
				// There must be at least 1 port.
				ss.Ports = append(ss.Ports, api.ServicePort{})
				c.Fuzz(&ss.Ports[0])
			}
			for i := range ss.Ports {
				switch ss.Ports[i].TargetPort.Type {
				case intstr.Int:
					ss.Ports[i].TargetPort.IntVal = 1 + ss.Ports[i].TargetPort.IntVal%65535 // non-zero
				case intstr.String:
					ss.Ports[i].TargetPort.StrVal = "x" + ss.Ports[i].TargetPort.StrVal // non-empty
				}
			}
		},
		func(n *api.Node, c fuzz.Continue) {
			c.FuzzNoCustom(n)
			n.Spec.ExternalID = "external"
		},
		func(s *api.NodeStatus, c fuzz.Continue) {
			c.FuzzNoCustom(s)
			s.Allocatable = s.Capacity
		},
		func(s *autoscaling.HorizontalPodAutoscalerSpec, c fuzz.Continue) {
			c.FuzzNoCustom(s) // fuzz self without calling this function again
			minReplicas := int32(c.Rand.Int31())
			s.MinReplicas = &minReplicas
			targetCpu := int32(c.RandUint64())
			s.TargetCPUUtilizationPercentage = &targetCpu
		},
		func(psp *extensions.PodSecurityPolicySpec, c fuzz.Continue) {
			c.FuzzNoCustom(psp) // fuzz self without calling this function again
			runAsUserRules := []extensions.RunAsUserStrategy{extensions.RunAsUserStrategyMustRunAsNonRoot, extensions.RunAsUserStrategyMustRunAs, extensions.RunAsUserStrategyRunAsAny}
			psp.RunAsUser.Rule = runAsUserRules[c.Rand.Intn(len(runAsUserRules))]
			seLinuxRules := []extensions.SELinuxStrategy{extensions.SELinuxStrategyRunAsAny, extensions.SELinuxStrategyMustRunAs}
			psp.SELinux.Rule = seLinuxRules[c.Rand.Intn(len(seLinuxRules))]
		},
		func(s *extensions.Scale, c fuzz.Continue) {
			c.FuzzNoCustom(s) // fuzz self without calling this function again
			// TODO: Implement a fuzzer to generate valid keys, values and operators for
			// selector requirements.
			if s.Status.Selector != nil {
				s.Status.Selector = &unversioned.LabelSelector{
					MatchLabels: map[string]string{
						"testlabelkey": "testlabelval",
					},
					MatchExpressions: []unversioned.LabelSelectorRequirement{
						{
							Key:      "testkey",
							Operator: unversioned.LabelSelectorOpIn,
							Values:   []string{"val1", "val2", "val3"},
						},
					},
				}
			}
		},
		func(r *runtime.RawExtension, c fuzz.Continue) {
			// Pick an arbitrary type and fuzz it
			types := []runtime.Object{&api.Pod{}, &extensions.Deployment{}, &api.Service{}}
			obj := types[c.Rand.Intn(len(types))]
			c.Fuzz(obj)

			// Find a codec for converting the object to raw bytes.  This is necessary for the
			// api version and kind to be correctly set be serialization.
			var codec runtime.Codec
			switch obj.(type) {
			case *api.Pod:
				codec = testapi.Default.Codec()
			case *extensions.Deployment:
				codec = testapi.Extensions.Codec()
			case *api.Service:
				codec = testapi.Default.Codec()
			default:
				t.Errorf("Failed to find codec for object type: %T", obj)
				return
			}

			// Convert the object to raw bytes
			bytes, err := runtime.Encode(codec, obj)
			if err != nil {
				t.Errorf("Failed to encode object: %v", err)
				return
			}

			// Set the bytes field on the RawExtension
			r.Raw = bytes
		},
	)
	return f
}
Beispiel #4
0
// limitRequestRatioConstraint enforces the limit to request ratio over the specified resource
func limitRequestRatioConstraint(limitType api.LimitType, resourceName api.ResourceName, enforced resource.Quantity, request api.ResourceList, limit api.ResourceList) error {
	req, reqExists := request[resourceName]
	lim, limExists := limit[resourceName]
	observedReqValue, observedLimValue, enforcedValue := requestLimitEnforcedValues(req, lim, enforced)

	if !reqExists || (observedReqValue == int64(0)) {
		return fmt.Errorf("%s max limit to request ratio per %s is %s, but no request is specified or request is 0.", resourceName, limitType, enforced.String())
	}
	if !limExists || (observedLimValue == int64(0)) {
		return fmt.Errorf("%s max limit to request ratio per %s is %s, but no limit is specified or limit is 0.", resourceName, limitType, enforced.String())
	}

	observedValue := observedLimValue / observedReqValue

	if observedValue > enforcedValue {
		return fmt.Errorf("%s max limit to request ratio per %s is %s, but provided ratio is %d.", resourceName, limitType, enforced.String(), observedValue)
	}

	return nil
}
Beispiel #5
0
// maxConstraint enforces the max constraint over the specified resource
func maxConstraint(limitType api.LimitType, resourceName api.ResourceName, enforced resource.Quantity, request api.ResourceList, limit api.ResourceList) error {
	req, reqExists := request[resourceName]
	lim, limExists := limit[resourceName]
	observedReqValue, observedLimValue, enforcedValue := requestLimitEnforcedValues(req, lim, enforced)

	if !limExists {
		return fmt.Errorf("Maximum %s usage per %s is %s.  No limit is specified.", resourceName, limitType, enforced.String())
	}
	if observedLimValue > enforcedValue {
		return fmt.Errorf("Maximum %s usage per %s is %s, but limit is %s.", resourceName, limitType, enforced.String(), lim.String())
	}
	if reqExists && (observedReqValue > enforcedValue) {
		return fmt.Errorf("Maximum %s usage per %s is %s, but request is %s.", resourceName, limitType, enforced.String(), req.String())
	}
	return nil
}
Beispiel #6
0
// The method veryfies whether resources should be set for the given pod and
// if there is estimation available the method fills Request field.
func (ir initialResources) estimateAndFillResourcesIfNotSet(pod *api.Pod) {
	annotations := []string{}
	for i := range pod.Spec.Containers {
		c := &pod.Spec.Containers[i]
		req := c.Resources.Requests
		lim := c.Resources.Limits
		var cpu, mem *resource.Quantity
		var err error
		if _, ok := req[api.ResourceCPU]; !ok {
			if _, ok2 := lim[api.ResourceCPU]; !ok2 {
				cpu, err = ir.getEstimation(api.ResourceCPU, c, pod.ObjectMeta.Namespace)
				if err != nil {
					glog.Errorf("Error while trying to estimate resources: %v", err)
				}
			}
		}
		if _, ok := req[api.ResourceMemory]; !ok {
			if _, ok2 := lim[api.ResourceMemory]; !ok2 {
				mem, err = ir.getEstimation(api.ResourceMemory, c, pod.ObjectMeta.Namespace)
				if err != nil {
					glog.Errorf("Error while trying to estimate resources: %v", err)
				}
			}
		}

		// If Requests doesn't exits and an estimation was made, create Requests.
		if req == nil && (cpu != nil || mem != nil) {
			c.Resources.Requests = api.ResourceList{}
			req = c.Resources.Requests
		}
		setRes := []string{}
		if cpu != nil {
			glog.Infof("CPU estimation for container %v in pod %v/%v is %v", c.Name, pod.ObjectMeta.Namespace, pod.ObjectMeta.Name, cpu.String())
			setRes = append(setRes, string(api.ResourceCPU))
			req[api.ResourceCPU] = *cpu
		}
		if mem != nil {
			glog.Infof("Memory estimation for container %v in pod  %v/%v is %v", c.Name, pod.ObjectMeta.Namespace, pod.ObjectMeta.Name, mem.String())
			setRes = append(setRes, string(api.ResourceMemory))
			req[api.ResourceMemory] = *mem
		}
		if len(setRes) > 0 {
			sort.Strings(setRes)
			a := strings.Join(setRes, ", ") + " request for container " + c.Name
			annotations = append(annotations, a)
		}
	}
	if len(annotations) > 0 {
		if pod.ObjectMeta.Annotations == nil {
			pod.ObjectMeta.Annotations = make(map[string]string)
		}
		val := "Initial Resources plugin set: " + strings.Join(annotations, "; ")
		pod.ObjectMeta.Annotations[initialResourcesAnnotation] = val
	}
}
Beispiel #7
0
// limitRequestRatioConstraint enforces the limit to request ratio over the specified resource
func limitRequestRatioConstraint(limitType api.LimitType, resourceName api.ResourceName, enforced resource.Quantity, request api.ResourceList, limit api.ResourceList) error {
	req, reqExists := request[resourceName]
	lim, limExists := limit[resourceName]
	observedReqValue, observedLimValue, _ := requestLimitEnforcedValues(req, lim, enforced)

	if !reqExists || (observedReqValue == int64(0)) {
		return fmt.Errorf("%s max limit to request ratio per %s is %s, but no request is specified or request is 0.", resourceName, limitType, enforced.String())
	}
	if !limExists || (observedLimValue == int64(0)) {
		return fmt.Errorf("%s max limit to request ratio per %s is %s, but no limit is specified or limit is 0.", resourceName, limitType, enforced.String())
	}

	observedRatio := float64(observedLimValue) / float64(observedReqValue)
	displayObservedRatio := observedRatio
	maxLimitRequestRatio := float64(enforced.Value())
	if enforced.Value() <= resource.MaxMilliValue {
		observedRatio = observedRatio * 1000
		maxLimitRequestRatio = float64(enforced.MilliValue())
	}

	if observedRatio > maxLimitRequestRatio {
		return fmt.Errorf("%s max limit to request ratio per %s is %s, but provided ratio is %f.", resourceName, limitType, enforced.String(), displayObservedRatio)
	}

	return nil
}
Beispiel #8
0
// maxRequestConstraint enforces the max constraint over the specified resource
// use when specify LimitType resource doesn't recognize limit values
func maxRequestConstraint(limitType api.LimitType, resourceName api.ResourceName, enforced resource.Quantity, request api.ResourceList) error {
	req, reqExists := request[resourceName]
	observedReqValue, _, enforcedValue := requestLimitEnforcedValues(req, resource.Quantity{}, enforced)

	if !reqExists {
		return fmt.Errorf("maximum %s usage per %s is %s.  No request is specified.", resourceName, limitType, enforced.String())
	}
	if observedReqValue > enforcedValue {
		return fmt.Errorf("maximum %s usage per %s is %s, but request is %s.", resourceName, limitType, enforced.String(), req.String())
	}
	return nil
}
Beispiel #9
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// The method veryfies whether resources should be set for the given pod and
// if there is estimation available the method fills Request field.
func (ir initialResources) estimateAndFillResourcesIfNotSet(pod *api.Pod) {
	for i := range pod.Spec.Containers {
		c := &pod.Spec.Containers[i]
		req := c.Resources.Requests
		lim := c.Resources.Limits
		var cpu, mem *resource.Quantity
		var err error
		if _, ok := req[api.ResourceCPU]; !ok {
			if _, ok2 := lim[api.ResourceCPU]; !ok2 {
				cpu, err = ir.getEstimation(api.ResourceCPU, c)
				if err != nil {
					glog.Errorf("Error while trying to estimate resources: %v", err)
				}
			}
		}
		if _, ok := req[api.ResourceMemory]; !ok {
			if _, ok2 := lim[api.ResourceMemory]; !ok2 {
				mem, err = ir.getEstimation(api.ResourceMemory, c)
				if err != nil {
					glog.Errorf("Error while trying to estimate resources: %v", err)
				}
			}
		}

		// If Requests doesn't exits and an estimation was made, create Requests.
		if req == nil && (cpu != nil || mem != nil) {
			c.Resources.Requests = api.ResourceList{}
			req = c.Resources.Requests
		}
		if cpu != nil {
			glog.Infof("CPU estimation for container %v in pod %v/%v is %v", c.Name, pod.ObjectMeta.Namespace, pod.ObjectMeta.Name, cpu.String())
			req[api.ResourceCPU] = *cpu
		}
		if mem != nil {
			glog.Infof("Memory estimation for container %v in pod  %v/%v is %v", c.Name, pod.ObjectMeta.Namespace, pod.ObjectMeta.Name, mem.String())
			req[api.ResourceMemory] = *mem
		}
	}
	// TODO(piosz): verify the estimates fits in LimitRanger
}
Beispiel #10
0
func newLimitExceededError(limitType kapi.LimitType, resourceName kapi.ResourceName, requested, limit *resource.Quantity) error {
	return fmt.Errorf("requested usage of %s exceeds the maximum limit per %s (%s > %s)", resourceName, limitType, requested.String(), limit.String())
}
Beispiel #11
0
func (ir initialResources) estimateContainer(pod *api.Pod, c *api.Container, message string) []string {
	var annotations []string
	req := c.Resources.Requests
	lim := c.Resources.Limits
	var cpu, mem *resource.Quantity
	var err error
	if _, ok := req[api.ResourceCPU]; !ok {
		if _, ok2 := lim[api.ResourceCPU]; !ok2 {
			cpu, err = ir.getEstimation(api.ResourceCPU, c, pod.ObjectMeta.Namespace)
			if err != nil {
				glog.Errorf("Error while trying to estimate resources: %v", err)
			}
		}
	}
	if _, ok := req[api.ResourceMemory]; !ok {
		if _, ok2 := lim[api.ResourceMemory]; !ok2 {
			mem, err = ir.getEstimation(api.ResourceMemory, c, pod.ObjectMeta.Namespace)
			if err != nil {
				glog.Errorf("Error while trying to estimate resources: %v", err)
			}
		}
	}

	// If Requests doesn't exits and an estimation was made, create Requests.
	if req == nil && (cpu != nil || mem != nil) {
		c.Resources.Requests = api.ResourceList{}
		req = c.Resources.Requests
	}
	setRes := []string{}
	if cpu != nil {
		glog.Infof("CPU estimation for %s %v in pod %v/%v is %v", message, c.Name, pod.ObjectMeta.Namespace, pod.ObjectMeta.Name, cpu.String())
		setRes = append(setRes, string(api.ResourceCPU))
		req[api.ResourceCPU] = *cpu
	}
	if mem != nil {
		glog.Infof("Memory estimation for %s %v in pod %v/%v is %v", message, c.Name, pod.ObjectMeta.Namespace, pod.ObjectMeta.Name, mem.String())
		setRes = append(setRes, string(api.ResourceMemory))
		req[api.ResourceMemory] = *mem
	}
	if len(setRes) > 0 {
		sort.Strings(setRes)
		a := strings.Join(setRes, ", ") + fmt.Sprintf(" request for %s %s", message, c.Name)
		annotations = append(annotations, a)
	}
	return annotations
}