operator

package
v0.63.0-rhobs1 Latest Latest
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 Go to latest Published: Feb 20, 2023 License: Apache-2.0 Imports: 42 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	// DefaultAlertmanagerVersion is a default image tag for the prometheus alertmanager
	DefaultAlertmanagerVersion = "v0.25.0"
	// DefaultAlertmanagerBaseImage is a base container registry address for the prometheus alertmanager
	DefaultAlertmanagerBaseImage = "quay.io/prometheus/alertmanager"
	// DefaultAlertmanagerImage is a default image pulling address for the prometheus alertmanager
	DefaultAlertmanagerImage = DefaultAlertmanagerBaseImage + ":" + DefaultAlertmanagerVersion

	// DefaultThanosVersion is a default image tag for the Thanos long-term prometheus storage collector
	DefaultThanosVersion = "v0.30.2"
	// DefaultThanosBaseImage is a base container registry address for the Thanos long-term prometheus
	// storage collector
	DefaultThanosBaseImage = "quay.io/thanos/thanos"
	// DefaultThanosImage is a default image pulling address for the Thanos long-term prometheus storage collector
	DefaultThanosImage = DefaultThanosBaseImage + ":" + DefaultThanosVersion
)
View Source 
const (
	AddEvent    = HandlerEvent("add")
	DeleteEvent = HandlerEvent("delete")
	UpdateEvent = HandlerEvent("update")
)
View Source 
const MaxSecretDataSizeBytes = v1.MaxSecretSize - 50_000

MaxSecretDataSizeBytes is the maximum data size that a single secret shard may use. This is lower than v1.MaxSecretSize in order to reserve space for metadata and the rest of the secret k8s object.

Variables

View Source 
var (
	// DefaultPrometheusVersion is a default image tag for the prometheus
	DefaultPrometheusVersion = PrometheusCompatibilityMatrix[len(PrometheusCompatibilityMatrix)-1]
	// DefaultPrometheusBaseImage is a base container registry address for the prometheus
	DefaultPrometheusBaseImage = "quay.io/prometheus/prometheus"
	// DefaultPrometheusImage is a default image pulling address for the prometheus
	DefaultPrometheusImage = DefaultPrometheusBaseImage + ":" + DefaultPrometheusVersion

	// DefaultPrometheusConfigReloaderImage is an image that will be used as a sidecar to provide dynamic prometheus
	// configuration reloading
	DefaultPrometheusConfigReloaderImage = "quay.io/rhobs/obo-prometheus-config-reloader:v" + version.Version

	// PrometheusCompatibilityMatrix is a list of supported prometheus versions.
	// prometheus-operator end-to-end tests verify that the operator can deploy from LTS n-1 to the latest stable.
	// This list should be updated every time a new LTS is released.
	PrometheusCompatibilityMatrix = []string{
		"v2.37.0",
		"v2.37.1",
		"v2.37.2",
		"v2.37.3",
		"v2.37.4",
		"v2.37.5",
		"v2.38.0",
		"v2.39.0",
		"v2.39.1",
		"v2.39.2",
		"v2.40.0",
		"v2.40.1",
		"v2.40.2",
		"v2.40.3",
		"v2.40.4",
		"v2.40.5",
		"v2.40.6",
		"v2.40.7",
		"v2.41.0",
		"v2.42.0",
	}
)
View Source 
var (
	DefaultReloaderTestConfig = &Config{
		ReloaderConfig: ContainerConfig{
			CPURequest:    "100m",
			CPULimit:      "100m",
			MemoryRequest: "50Mi",
			MemoryLimit:   "50Mi",
			Image:         "quay.io/rhobs/obo-prometheus-config-reloader:latest",
		},
	}
)

Functions

func BuildArgs 

func BuildArgs(args []monitoringv1.Argument, additionalArgs []monitoringv1.Argument) ([]string, error)

BuildArgs takes a list of arguments and a list of additional arguments and returns a []string to use in a container Args

func BuildImagePath 

func BuildImagePath(specImage, baseImage, version, tag, sha string) (string, error)

BuildImagePath builds a container image path based on the given parameters. Return specImage if not empty. If image contains a tag or digest then image will be returned. Otherwise, return image suffixed by either SHA, tag or version(in that order). Inspired by kubernetes code handling of image building.

func CreateConfigReloader 

func CreateConfigReloader(name string, options ...ReloaderOption) v1.Container

CreateConfigReloader returns the definition of the config-reloader container.

func CurlProber 

func CurlProber(u string) string

func GenerateRulesConfiguration 

func GenerateRulesConfiguration(promRule monitoringv1.PrometheusRuleSpec, logger log.Logger) (string, error)

func GunzipConfig 

func GunzipConfig(b []byte) (string, error)

func GzipConfig 

func GzipConfig(w io.Writer, conf []byte) error

func MakeHostAliases 

func MakeHostAliases(input []monitoringv1.HostAlias) []v1.HostAlias

MakeHostAliases converts array of monitoringv1 HostAlias to array of corev1 HostAlias

func MakeVolumeClaimTemplate 

func MakeVolumeClaimTemplate(e monitoringv1.EmbeddedPersistentVolumeClaim) *v1.PersistentVolumeClaim

func SanitizeSTS 

func SanitizeSTS(sts *appsv1.StatefulSet)

SanitizeSTS removes values for APIVersion and Kind from the VolumeClaimTemplates. This prevents update failures due to these fields changing when applied. See https://github.com/kubernetes/kubernetes/issues/87583

func StringPtrValOrDefault 

func StringPtrValOrDefault(val *string, defaultVal string) string

StringPtrValOrDefault returns the default val if the given string pointer is nil points to an empty/whitespace string. Otherwise returns the value of the string.

func StringValOrDefault 

func StringValOrDefault(val, defaultVal string) string

StringValOrDefault returns the default val if the given string is empty/whitespace. Otherwise returns the value of the string..

func TestSidecarsResources 

func TestSidecarsResources(t *testing.T, makeStatefulSet func(reloaderConfig ContainerConfig) *appsv1.StatefulSet)

func ValidateDurationField 

func ValidateDurationField(durationField string) error

func ValidateRule 

func ValidateRule(promRule monitoringv1.PrometheusRuleSpec) []error

ValidateRule takes PrometheusRuleSpec and validates it using the upstream prometheus rule validator.

func ValidateSizeField 

func ValidateSizeField(sizeField string) error

func WaitForNamedCacheSync 

func WaitForNamedCacheSync(ctx context.Context, controllerName string, logger log.Logger, inf cache.SharedIndexInformer) bool

WaitForNamedCacheSync synchronizes the informer's cache and will log a warning every minute if the operation hasn't completed yet, until it reaches a timeout of 10 minutes. Under normal circumstances, the cache sync should be fast. If it takes more than 1 minute, it means that something is stuck and the message will indicate to the admin which informer is the culprit. See https://github.com/rhobs/obo-prometheus-operator/issues/3347.

func WgetProber 

func WgetProber(u string) string

Types

type Config 

type Config struct {
	Host                         string
	ClusterDomain                string
	KubeletObject                string
	ListenAddress                string
	TLSInsecure                  bool
	TLSConfig                    rest.TLSClientConfig
	ServerTLSConfig              server.TLSServerConfig
	ReloaderConfig               ContainerConfig
	AlertmanagerDefaultBaseImage string
	PrometheusDefaultBaseImage   string
	ThanosDefaultBaseImage       string
	Namespaces                   Namespaces
	Labels                       Labels
	LocalHost                    string
	LogLevel                     string
	LogFormat                    string
	PromSelector                 string
	AlertManagerSelector         string
	ThanosRulerSelector          string
	SecretListWatchSelector      string
}

Config defines configuration parameters for the Operator.

type ConfigReloader 

type ConfigReloader struct {
	// contains filtered or unexported fields
}

ConfigReloader contains the options to configure a config-reloader container

type ContainerConfig 

type ContainerConfig struct {
	CPURequest    string
	CPULimit      string
	MemoryRequest string
	MemoryLimit   string
	Image         string
}

ContainerConfig holds some configuration for the ConfigReloader sidecar that can be set through prometheus-operator command line arguments

type HandlerEvent 

type HandlerEvent string

type Labels 

type Labels struct {
	LabelsString string
	LabelsMap    map[string]string
}

func (*Labels) Merge 

func (labels *Labels) Merge(otherLabels map[string]string) map[string]string

Merge labels create a new map with labels merged.

func (*Labels) Set 

func (labels *Labels) Set(value string) error

Set implements the flag.Set interface.

func (*Labels) SortedKeys 

func (labels *Labels) SortedKeys() []string

Returns an arrary with the keys of the label map sorted

func (*Labels) String 

func (labels *Labels) String() string

Implement the flag.Value interface

type Metrics 

type Metrics struct {
	// contains filtered or unexported fields
}

Metrics represents metrics associated to an operator.

func NewMetrics 

func NewMetrics(r prometheus.Registerer) *Metrics

NewMetrics initializes operator metrics and registers them with the given registerer.

func (*Metrics) Collect 

func (m *Metrics) Collect(ch chan<- prometheus.Metric)

Collect implements the prometheus.Collector interface.

func (*Metrics) Describe 

func (m *Metrics) Describe(ch chan<- *prometheus.Desc)

Describe implements the prometheus.Collector interface.

func (*Metrics) MustRegister 

func (m *Metrics) MustRegister(metrics ...prometheus.Collector)

MustRegister registers metrics with the Metrics registerer.

func (*Metrics) NewInstrumentedListerWatcher 

func (m *Metrics) NewInstrumentedListerWatcher(lw cache.ListerWatcher) cache.ListerWatcher

NewInstrumentedListerWatcher returns a cache.ListerWatcher with instrumentation.

func (*Metrics) Ready 

func (m *Metrics) Ready() prometheus.Gauge

Ready returns a gauge to track whether the controller is ready or not.

func (*Metrics) SetRejectedResources 

func (m *Metrics) SetRejectedResources(objKey, resource string, v int)

SetRejectedResources sets the number of resources that the controller rejected for the given object's key.

func (*Metrics) SetSelectedResources 

func (m *Metrics) SetSelectedResources(objKey, resource string, v int)

SetSelectedResources sets the number of resources that the controller selected for the given object's key.

func (*Metrics) StsDeleteCreateCounter 

func (m *Metrics) StsDeleteCreateCounter() prometheus.Counter

StsDeleteCreateCounter returns a counter to track statefulset's recreations.

func (*Metrics) TriggerByCounter 

func (m *Metrics) TriggerByCounter(triggeredBy string, action HandlerEvent) prometheus.Counter

TriggerByCounter returns a counter to track operator actions by resource type and action (add/delete/update).

type Namespaces 

type Namespaces struct {
	// Allow list/deny list for common custom resources.
	AllowList, DenyList map[string]struct{}
	// Allow list for prometheus/alertmanager custom resources.
	PrometheusAllowList, AlertmanagerAllowList, AlertmanagerConfigAllowList, ThanosRulerAllowList map[string]struct{}
}

type Pod 

type Pod v1.Pod

Pod is an alias for the Kubernetes v1.Pod type.

func (*Pod) Message 

func (p *Pod) Message() string

Message returns a human-readable and terse message about the state of the pod.

func (*Pod) Ready 

func (p *Pod) Ready() bool

Ready returns true if the pod is ready.

type ReconcilerMetrics 

type ReconcilerMetrics interface {
	TriggerByCounter(string, HandlerEvent) prometheus.Counter
}

ReconcilerMetrics tracks reconciler metrics.

type ReconciliationStatus 

type ReconciliationStatus struct {
	// contains filtered or unexported fields
}

func (ReconciliationStatus) Message 

func (rs ReconciliationStatus) Message() string

func (ReconciliationStatus) Ok 

func (rs ReconciliationStatus) Ok() bool

func (ReconciliationStatus) Reason 

func (rs ReconciliationStatus) Reason() string

type ReconciliationTracker 

type ReconciliationTracker struct {
	// contains filtered or unexported fields
}

ReconciliationTracker tracks reconciliation status per object. The zero ReconciliationTracker is ready to use.

func (*ReconciliationTracker) Collect 

func (rt *ReconciliationTracker) Collect(ch chan<- prometheus.Metric)

Collect implements the prometheus.Collector interface.

func (*ReconciliationTracker) Describe 

func (rt *ReconciliationTracker) Describe(ch chan<- *prometheus.Desc)

Describe implements the prometheus.Collector interface.

func (*ReconciliationTracker) ForgetObject 

func (rt *ReconciliationTracker) ForgetObject(k string)

ForgetObject removes the given object from the tracker. It should be called when the controller detects that the object has been deleted.

func (*ReconciliationTracker) GetStatus 

func (rt *ReconciliationTracker) GetStatus(k string) (ReconciliationStatus, bool)

GetStatus returns the last reconciliation status for the given object. The second value indicates whether the object is known or not.

func (*ReconciliationTracker) SetStatus 

func (rt *ReconciliationTracker) SetStatus(k string, err error)

SetStatus updates the last reconciliation status for the given object.

type ReloaderOption 

type ReloaderOption = func(*ConfigReloader)

func ConfigEnvsubstFile 

func ConfigEnvsubstFile(configEnvsubstFile string) ReloaderOption

ConfigEnvsubstFile sets the configEnvsubstFile option for the config-reloader container

func ConfigFile 

func ConfigFile(configFile string) ReloaderOption

ConfigFile sets the configFile option for the config-reloader container

func ImagePullPolicy 

func ImagePullPolicy(imagePullPolicy v1.PullPolicy) ReloaderOption

ImagePullPolicy sets the imagePullPolicy option for the config-reloader container

func ListenLocal 

func ListenLocal(listenLocal bool) ReloaderOption

ListenLocal sets the listenLocal option for the config-reloader container

func LocalHost 

func LocalHost(localHost string) ReloaderOption

LocalHost sets the localHost option for the config-reloader container

func LogFormat 

func LogFormat(logFormat string) ReloaderOption

LogFormat sets the logFormat option for the config-reloader container

func LogLevel 

func LogLevel(logLevel string) ReloaderOption

LogLevel sets the logLevel option for the config-reloader container\

func ReloaderConfig 

func ReloaderConfig(rc ContainerConfig) ReloaderOption

ReloaderResources sets the config option for the config-reloader container

func ReloaderRunOnce 

func ReloaderRunOnce() ReloaderOption

ReloaderRunOnce sets the runOnce option for the config-reloader container

func ReloaderURL 

func ReloaderURL(reloadURL url.URL) ReloaderOption

ReloaderURL sets the reloaderURL option for the config-reloader container

func Shard 

func Shard(shard int32) ReloaderOption

Shard sets the shard option for the config-reloader container

func VolumeMounts 

func VolumeMounts(mounts []v1.VolumeMount) ReloaderOption

VolumeMounts sets the volumeMounts option for the config-reloader container

func WatchedDirectories 

func WatchedDirectories(watchedDirectories []string) ReloaderOption

WatchedDirectories sets the watchedDirectories option for the config-reloader container

type ResourceReconciler 

type ResourceReconciler struct {
	// contains filtered or unexported fields
}

ResourceReconciler reacts on changes for statefulset-based resources and triggers synchronization of the resources.

ResourceReconciler implements the cache.ResourceEventHandler interface and it can subscribe to resource events like this:

var statefulSetInformer, resourceInformer cache.SharedInformer ... rr := NewResourceReconciler(...) statefulSetInformer.AddEventHandler(rr) resourceInformer.AddEventHandler(rr)

ResourceReconciler will trigger object and status reconciliations based on the events received from the informer.

func NewResourceReconciler 

func NewResourceReconciler(
	l log.Logger,
	syncer Syncer,
	metrics ReconcilerMetrics,
	kind string,
	reg prometheus.Registerer,
) *ResourceReconciler

NewResourceReconciler returns a reconciler for the "kind" resource.

func (*ResourceReconciler) DeletionInProgress 

func (rr *ResourceReconciler) DeletionInProgress(o metav1.Object) bool

DeletionInProgress returns true if the object deletion has been requested.

func (*ResourceReconciler) EnqueueForReconciliation 

func (rr *ResourceReconciler) EnqueueForReconciliation(obj metav1.Object)

EnqueueForReconciliation asks for reconciling the object.

func (*ResourceReconciler) EnqueueForStatus 

func (rr *ResourceReconciler) EnqueueForStatus(obj metav1.Object)

EnqueueForStatus asks for updating the status of the object.

func (*ResourceReconciler) OnAdd 

func (rr *ResourceReconciler) OnAdd(obj interface{})

OnAdd implements the cache.ResourceEventHandler interface.

func (*ResourceReconciler) OnDelete 

func (rr *ResourceReconciler) OnDelete(obj interface{})

OnDelete implements the cache.ResourceEventHandler interface.

func (*ResourceReconciler) OnUpdate 

func (rr *ResourceReconciler) OnUpdate(old, cur interface{})

OnUpdate implements the cache.ResourceEventHandler interface.

func (*ResourceReconciler) Run 

func (rr *ResourceReconciler) Run(ctx context.Context)

Run the goroutines responsible for processing the reconciliation and status queues.

func (*ResourceReconciler) Stop 

func (rr *ResourceReconciler) Stop()

Stop the processing queues and wait for goroutines to exit.

type ShardedSecret 

type ShardedSecret struct {
	// contains filtered or unexported fields
}

ShardedSecret is k8s secret data that is sharded across multiple enumerated k8s secrets. This is used to circumvent the size limitation of k8s secrets.

func NewShardedSecret 

func NewShardedSecret(template *v1.Secret, namePrefix string) *ShardedSecret

NewShardedSecret takes a v1.Secret as template and a secret name prefix and returns a new ShardedSecret.

func (*ShardedSecret) AppendData 

func (s *ShardedSecret) AppendData(key string, data []byte)

AppendData adds data to the secrets data portion. Already existing keys get overwritten.

func (*ShardedSecret) ShardNames 

func (s *ShardedSecret) ShardNames() []string

ShardNames returns the names of the secret shards. This only returns something after StoreSecrets was called and the actual sharding took place.

func (*ShardedSecret) StoreSecrets 

func (s *ShardedSecret) StoreSecrets(ctx context.Context, sClient corev1.SecretInterface) error

StoreSecrets creates the individual secret shards and stores it via sClient.

type StatefulSetReporter 

type StatefulSetReporter struct {
	Pods []*Pod
	// contains filtered or unexported fields
}

func NewStatefulSetReporter 

func NewStatefulSetReporter(ctx context.Context, kclient kubernetes.Interface, sset *appsv1.StatefulSet) (*StatefulSetReporter, error)

NewStatefulSetReporter returns a statefulset's reporter.

func (*StatefulSetReporter) IsUpdated 

func (sr *StatefulSetReporter) IsUpdated(p *Pod) bool

IsUpdated returns true if the given pod matches with the statefulset's revision.

func (*StatefulSetReporter) ReadyPods 

func (sr *StatefulSetReporter) ReadyPods() []*Pod

ReadyPods returns the list of pods that are ready.

func (*StatefulSetReporter) UpdatedPods 

func (sr *StatefulSetReporter) UpdatedPods() []*Pod

UpdatedPods returns the list of pods that match with the statefulset's revision.

type Syncer 

type Syncer interface {
	// Sync the state of the object identified by its key.
	Sync(context.Context, string) error
	// UpdateStatus updates the status of the object identified by its key.
	UpdateStatus(context.Context, string) error
	// Resolve returns the resource associated to the statefulset.
	Resolve(*appsv1.StatefulSet) metav1.Object
}

Syncer knows how to synchronize statefulset-based resources.

Source Files

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