Set history size in snapshots cronjob, deploy es daemonset in the same namespace of the crd, delete daemonset object before a crd deletiong

Author: gianrubio

pkg/controller/controller.go

@@ -66,16 +66,11 @@ func (c *Controller) Run() error {
 }
 
 func (c *Controller) init() error {
-	err := c.k8sclient.CreateKubernetesCustomResourceDefinition()
+	crd, err := c.k8sclient.CreateKubernetesCustomResourceDefinition()
 	if err != nil {
 		return err
 	}
 
-	err = c.k8sclient.CreateNodeInitDaemonset("default")
+	return c.k8sclient.CreateNodeInitDaemonset(crd.ObjectMeta.Namespace)
 
-	if err != nil {
-		return err
-	}
-
-	return nil
 }

pkg/k8sutil/daemonsets.go

@@ -25,6 +25,8 @@ ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 package k8sutil
 
 import (
+	"fmt"
+
 	"github.com/Sirupsen/logrus"
 	"k8s.io/api/core/v1"
 	"k8s.io/api/extensions/v1beta1"
@@ -36,6 +38,20 @@ const (
 	esOperatorSysctlName = "elasticsearch-operator-sysctl"
 )
 
+// DeleteNodeInitDaemonset delete the node init daemonset
+func (k *K8sutil) DeleteNodeInitDaemonset(namespace string) error {
+
+	ds, err := k.Kclient.ExtensionsV1beta1().DaemonSets(namespace).Get(esOperatorSysctlName, metav1.GetOptions{})
+
+	if err != nil {
+		return fmt.Errorf("Could not delete daemonset: %s ", ds.Name)
+	}
+
+	logrus.Infof("Deleted daemonset: %s", ds.Name)
+	return nil
+
+}
+
 // CreateNodeInitDaemonset creates the node init daemonset
 func (k *K8sutil) CreateNodeInitDaemonset(namespace string) error {
 

pkg/k8sutil/k8sutil.go

@@ -158,7 +158,7 @@ func newKubeClient(kubeCfgFile string) (genclient.Interface, kubernetes.Interfac
 }
 
 // CreateKubernetesCustomResourceDefinition checks if ElasticSearch CRD exists. If not, create
-func (k *K8sutil) CreateKubernetesCustomResourceDefinition() error {
+func (k *K8sutil) CreateKubernetesCustomResourceDefinition() (*apiextensionsv1beta1.CustomResourceDefinition, error) {
 
 	crd, err := k.KubeExt.ApiextensionsV1beta1().CustomResourceDefinitions().Get(elasticsearchoperator.Name, metav1.GetOptions{})
 	if err != nil {
@@ -208,9 +208,9 @@ func (k *K8sutil) CreateKubernetesCustomResourceDefinition() error {
 			if err != nil {
 				deleteErr := k.KubeExt.ApiextensionsV1beta1().CustomResourceDefinitions().Delete(elasticsearchoperator.Name, nil)
 				if deleteErr != nil {
-					return errors.NewAggregate([]error{err, deleteErr})
+					return nil, errors.NewAggregate([]error{err, deleteErr})
 				}
-				return err
+				return nil, err
 			}
 
 			logrus.Info("CRD ready!")
@@ -221,7 +221,7 @@ func (k *K8sutil) CreateKubernetesCustomResourceDefinition() error {
 		logrus.Infof("SKIPPING: already exists %#v\n", crd.ObjectMeta.Name)
 	}
 
-	return nil
+	return crd, err
 }
 
 // MonitorElasticSearchEvents watches for new or removed clusters

pkg/processor/processor.go

@@ -444,6 +444,10 @@ func (p *Processor) deleteElasticSearchCluster(c *myspec.ElasticsearchCluster) {
 		logrus.Errorf("Could not delete storage class %s: %v", c.ObjectMeta.Name, err)
 	}
 
+	if err := p.k8sclient.DeleteNodeInitDaemonset(c.ObjectMeta.Name); err != nil {
+		logrus.Errorf("Could not delete daemonset %s: %v", c.ObjectMeta.Namespace, err)
+	}
+
 	p.clusters[fmt.Sprintf("%s-%s", c.ObjectMeta.Name, c.ObjectMeta.Namespace)].Scheduler.Stop()
 
 	if !c.Spec.KeepSecretsOnDelete {

pkg/snapshot/scheduler.go

@@ -163,6 +163,7 @@ func (s *Scheduler) deleteCronJob(namespace, clusterName string) {
 func (s *Scheduler) CreateCronJob(namespace, clusterName, action, cronSchedule string) error {
 	snapshotName := getSnapshotname(clusterName, action)
 
+	var jobHistorySize int32 = 20
 	// Check if CronJob exists
 	cronJob, err := s.Kclient.BatchV1beta1().CronJobs(namespace).Get(snapshotName, metav1.GetOptions{})
 
@@ -187,7 +188,9 @@ func (s *Scheduler) CreateCronJob(namespace, clusterName, action, cronSchedule s
 				},
 			},
 			Spec: v1beta1.CronJobSpec{
-				Schedule: cronSchedule,
+				Schedule:                   cronSchedule,
+				SuccessfulJobsHistoryLimit: &jobHistorySize,
+				FailedJobsHistoryLimit:     &jobHistorySize,
 				JobTemplate: v1beta1.JobTemplateSpec{
 					Spec: batchv1.JobSpec{
 						Template: apicore.PodTemplateSpec{