/
machinehealthcheck_controller.go
187 lines (152 loc) · 5.21 KB
/
machinehealthcheck_controller.go
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package machinehealthcheck
// Copyright (c) Microsoft Corporation.
// Licensed under the Apache License 2.0.
import (
"context"
_ "embed"
"strings"
"time"
configv1 "github.com/openshift/api/config/v1"
machinev1beta1 "github.com/openshift/api/machine/v1beta1"
monitoringv1 "github.com/prometheus-operator/prometheus-operator/pkg/apis/monitoring/v1"
"github.com/sirupsen/logrus"
kruntime "k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/kubernetes/scheme"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/builder"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
"github.com/Azure/ARO-RP/pkg/operator"
arov1alpha1 "github.com/Azure/ARO-RP/pkg/operator/apis/aro.openshift.io/v1alpha1"
"github.com/Azure/ARO-RP/pkg/operator/controllers/base"
"github.com/Azure/ARO-RP/pkg/util/dynamichelper"
)
//go:embed staticresources/machinehealthcheck.yaml
var machinehealthcheckYaml []byte
//go:embed staticresources/mhcremediationalert.yaml
var mhcremediationalertYaml []byte
const (
ControllerName string = "MachineHealthCheck"
MHCPausedAnnotation string = "cluster.x-k8s.io/paused"
)
type Reconciler struct {
base.AROController
dh dynamichelper.Interface
}
func NewReconciler(log *logrus.Entry, client client.Client, dh dynamichelper.Interface) *Reconciler {
return &Reconciler{
AROController: base.AROController{
Log: log,
Client: client,
Name: ControllerName,
},
dh: dh,
}
}
// Reconcile watches MachineHealthCheck objects, and if any changes,
// reconciles the associated ARO MachineHealthCheck object
func (r *Reconciler) Reconcile(ctx context.Context, request ctrl.Request) (ctrl.Result, error) {
instance, err := r.GetCluster(ctx)
if err != nil {
return reconcile.Result{}, err
}
if !instance.Spec.OperatorFlags.GetSimpleBoolean(operator.MachineHealthCheckEnabled) {
r.Log.Debug("controller is disabled")
return reconcile.Result{}, nil
}
r.Log.Debug("running")
if !instance.Spec.OperatorFlags.GetSimpleBoolean(operator.MachineHealthCheckManaged) {
err := r.dh.EnsureDeleted(ctx, "MachineHealthCheck", "openshift-machine-api", "aro-machinehealthcheck")
if err != nil {
r.Log.Error(err)
r.SetDegraded(ctx, err)
return reconcile.Result{RequeueAfter: time.Hour}, err
}
err = r.dh.EnsureDeleted(ctx, "PrometheusRule", "openshift-machine-api", "mhc-remediation-alert")
if err != nil {
r.Log.Error(err)
r.SetDegraded(ctx, err)
return reconcile.Result{RequeueAfter: time.Hour}, err
}
r.ClearConditions(ctx)
return reconcile.Result{}, nil
}
var resources []kruntime.Object
for _, asset := range [][]byte{machinehealthcheckYaml, mhcremediationalertYaml} {
resource, _, err := scheme.Codecs.UniversalDeserializer().Decode(asset, nil, nil)
if err != nil {
r.Log.Error(err)
r.SetDegraded(ctx, err)
return reconcile.Result{}, err
}
if mhc, ok := resource.(*machinev1beta1.MachineHealthCheck); ok {
isUpgrading, err := r.isClusterUpgrading(ctx)
if err != nil {
r.Log.Error(err)
r.SetDegraded(ctx, err)
return reconcile.Result{}, err
}
if isUpgrading {
mhc.ObjectMeta.Annotations = map[string]string{
MHCPausedAnnotation: "",
}
}
}
resources = append(resources, resource)
}
// helps with garbage collection of the resources we are dealing with
err = dynamichelper.SetControllerReferences(resources, instance)
if err != nil {
return reconcile.Result{}, err
}
// make sure we will be able to deploy a new resource into the cluster
err = dynamichelper.Prepare(resources)
if err != nil {
return reconcile.Result{}, err
}
// create/update the MHC CR
err = r.dh.Ensure(ctx, resources...)
if err != nil {
r.Log.Error(err)
r.SetDegraded(ctx, err)
return reconcile.Result{}, err
}
r.ClearConditions(ctx)
return reconcile.Result{}, nil
}
func (r *Reconciler) isClusterUpgrading(ctx context.Context) (bool, error) {
clusterVersion := &configv1.ClusterVersion{}
if err := r.Client.Get(ctx, types.NamespacedName{Name: "version"}, clusterVersion); err != nil {
return false, err
}
for _, cnd := range clusterVersion.Status.Conditions {
if cnd.Type == configv1.OperatorProgressing {
return cnd.Status == configv1.ConditionTrue, nil
}
}
return false, nil
}
// SetupWithManager will manage only our MHC resource with our specific controller name
func (r *Reconciler) SetupWithManager(mgr ctrl.Manager) error {
aroClusterPredicate := predicate.NewPredicateFuncs(func(o client.Object) bool {
return strings.EqualFold(arov1alpha1.SingletonClusterName, o.GetName())
})
clusterVersionPredicate := predicate.NewPredicateFuncs(func(o client.Object) bool {
return o.GetName() == "version"
})
return ctrl.NewControllerManagedBy(mgr).
For(&arov1alpha1.Cluster{}, builder.WithPredicates(aroClusterPredicate)).
Named(ControllerName).
Owns(&machinev1beta1.MachineHealthCheck{}).
Owns(&monitoringv1.PrometheusRule{}).
Watches(
&source.Kind{Type: &configv1.ClusterVersion{}},
&handler.EnqueueRequestForObject{},
builder.WithPredicates(clusterVersionPredicate),
).
Complete(r)
}