Sync in case of missing deployment

If nothing changed we still need to try to sync and test if the
deployment is there. Otherwise it could be deleted, and operator will
not notice.

pkg/cluster/sync.go

@@ -2,7 +2,6 @@ package cluster
 
 import (
 	"fmt"
-	"reflect"
 
 	batchv1beta1 "k8s.io/api/batch/v1beta1"
 	v1 "k8s.io/api/core/v1"
@@ -608,29 +607,12 @@ func (c *Cluster) syncConnectionPool(oldSpec, newSpec *acidv1.Postgresql) error
 	newNeedConnPool := c.needConnectionPoolWorker(&newSpec.Spec)
 	oldNeedConnPool := c.needConnectionPoolWorker(&oldSpec.Spec)
 
-	if oldNeedConnPool && newNeedConnPool {
-		// sync in case of differences, or if no resources present
-		oldPool := oldSpec.Spec.ConnectionPool
-		newPool := newSpec.Spec.ConnectionPool
-
-		if c.ConnectionPool == nil ||
-			c.ConnectionPool.Deployment == nil ||
-			c.ConnectionPool.Service == nil ||
-			!reflect.DeepEqual(oldPool, newPool) {
-
-			c.logger.Debug("syncing connection pool")
-
-			if err := c.syncConnectionPoolWorker(oldSpec, newSpec); err != nil {
-				c.logger.Errorf("could not sync connection pool: %v", err)
-				return err
-			}
-		} else {
-			c.logger.Debug("No connection pool sync")
-		}
-	}
-
-	if !oldNeedConnPool && newNeedConnPool {
-		// sync to create everything
+	if newNeedConnPool {
+		// Try to sync in any case. If we didn't needed connection pool before,
+		// it means we want to create it. If it was already present, still sync
+		// since it could happen that there is no difference in specs, and all
+		// the resources are remembered, but the deployment was manualy deleted
+		// in between
 		c.logger.Debug("syncing connection pool")
 
 		if err := c.syncConnectionPoolWorker(oldSpec, newSpec); err != nil {