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Critical operation PDB (#2830)

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Create the second PDB to cover Pods with a special "critical operation" label set.

This label is going to be assigned to all pg cluster's Pods by the Operator during a PG major version upgrade, by Patroni during a cluster/replica bootstrap. It can also be set manually or by any other automation tool.
This commit is contained in:
Polina Bungina
2025-01-29 12:41:08 +01:00
committed by GitHub
parent f49b4f1e97
commit a56ecaace7
11 changed files with 456 additions and 123 deletions
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pkg/cluster/cluster.go
+31 -33
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@@ -59,16 +59,17 @@ type Config struct {
}
type kubeResources struct {
Services map[PostgresRole]*v1.Service
Endpoints map[PostgresRole]*v1.Endpoints
PatroniEndpoints map[string]*v1.Endpoints
PatroniConfigMaps map[string]*v1.ConfigMap
Secrets map[types.UID]*v1.Secret
Statefulset *appsv1.StatefulSet
VolumeClaims map[types.UID]*v1.PersistentVolumeClaim
PodDisruptionBudget *policyv1.PodDisruptionBudget
LogicalBackupJob *batchv1.CronJob
Streams map[string]*zalandov1.FabricEventStream
Services map[PostgresRole]*v1.Service
Endpoints map[PostgresRole]*v1.Endpoints
PatroniEndpoints map[string]*v1.Endpoints
PatroniConfigMaps map[string]*v1.ConfigMap
Secrets map[types.UID]*v1.Secret
Statefulset *appsv1.StatefulSet
VolumeClaims map[types.UID]*v1.PersistentVolumeClaim
PrimaryPodDisruptionBudget *policyv1.PodDisruptionBudget
CriticalOpPodDisruptionBudget *policyv1.PodDisruptionBudget
LogicalBackupJob *batchv1.CronJob
Streams map[string]*zalandov1.FabricEventStream
//Pods are treated separately
}
@@ -343,14 +344,10 @@ func (c *Cluster) Create() (err error) {
c.logger.Infof("secrets have been successfully created")
c.eventRecorder.Event(c.GetReference(), v1.EventTypeNormal, "Secrets", "The secrets have been successfully created")
if c.PodDisruptionBudget != nil {
return fmt.Errorf("pod disruption budget already exists in the cluster")
if err = c.createPodDisruptionBudgets(); err != nil {
return fmt.Errorf("could not create pod disruption budgets: %v", err)
}
pdb, err := c.createPodDisruptionBudget()
if err != nil {
return fmt.Errorf("could not create pod disruption budget: %v", err)
}
c.logger.Infof("pod disruption budget %q has been successfully created", util.NameFromMeta(pdb.ObjectMeta))
c.logger.Info("pod disruption budgets have been successfully created")
if c.Statefulset != nil {
return fmt.Errorf("statefulset already exists in the cluster")
@@ -1081,9 +1078,9 @@ func (c *Cluster) Update(oldSpec, newSpec *acidv1.Postgresql) error {
}
}
// pod disruption budget
if err := c.syncPodDisruptionBudget(true); err != nil {
c.logger.Errorf("could not sync pod disruption budget: %v", err)
// pod disruption budgets
if err := c.syncPodDisruptionBudgets(true); err != nil {
c.logger.Errorf("could not sync pod disruption budgets: %v", err)
updateFailed = true
}
@@ -1228,10 +1225,10 @@ func (c *Cluster) Delete() error {
c.logger.Info("not deleting secrets because disabled in configuration")
}
if err := c.deletePodDisruptionBudget(); err != nil {
if err := c.deletePodDisruptionBudgets(); err != nil {
anyErrors = true
c.logger.Warningf("could not delete pod disruption budget: %v", err)
c.eventRecorder.Eventf(c.GetReference(), v1.EventTypeWarning, "Delete", "could not delete pod disruption budget: %v", err)
c.logger.Warningf("could not delete pod disruption budgets: %v", err)
c.eventRecorder.Eventf(c.GetReference(), v1.EventTypeWarning, "Delete", "could not delete pod disruption budgets: %v", err)
}
for _, role := range []PostgresRole{Master, Replica} {
@@ -1730,16 +1727,17 @@ func (c *Cluster) GetCurrentProcess() Process {
// GetStatus provides status of the cluster
func (c *Cluster) GetStatus() *ClusterStatus {
status := &ClusterStatus{
Cluster: c.Name,
Namespace: c.Namespace,
Team: c.Spec.TeamID,
Status: c.Status,
Spec: c.Spec,
MasterService: c.GetServiceMaster(),
ReplicaService: c.GetServiceReplica(),
StatefulSet: c.GetStatefulSet(),
PodDisruptionBudget: c.GetPodDisruptionBudget(),
CurrentProcess: c.GetCurrentProcess(),
Cluster: c.Name,
Namespace: c.Namespace,
Team: c.Spec.TeamID,
Status: c.Status,
Spec: c.Spec,
MasterService: c.GetServiceMaster(),
ReplicaService: c.GetServiceReplica(),
StatefulSet: c.GetStatefulSet(),
PrimaryPodDisruptionBudget: c.GetPrimaryPodDisruptionBudget(),
CriticalOpPodDisruptionBudget: c.GetCriticalOpPodDisruptionBudget(),
CurrentProcess: c.GetCurrentProcess(),
Error: fmt.Errorf("error: %s", c.Error),
}