*: update pvc and modify the default rootHost to localhost

api/v1alpha1/cluster_types.go

@@ -43,7 +43,7 @@ type ClusterSpec struct {
 
 	// MysqlOpts is the options of MySQL container.
 	// +optional
-	// +kubebuilder:default:={rootPassword: "", rootHost: "127.0.0.1", user: "qc_usr", password: "Qing@123", database: "qingcloud", initTokuDB: true, resources: {limits: {cpu: "500m", memory: "1Gi"}, requests: {cpu: "100m", memory: "256Mi"}}}
+	// +kubebuilder:default:={rootPassword: "", rootHost: "localhost", user: "qc_usr", password: "Qing@123", database: "qingcloud", initTokuDB: true, resources: {limits: {cpu: "500m", memory: "1Gi"}, requests: {cpu: "100m", memory: "256Mi"}}}
 	MysqlOpts MysqlOpts `json:"mysqlOpts,omitempty"`
 
 	// XenonOpts is the options of xenon container.
@@ -86,7 +86,7 @@ type MysqlOpts struct {
 
 	// The root user's host.
 	// +optional
-	// +kubebuilder:default:="127.0.0.1"
+	// +kubebuilder:default:="localhost"
 	RootHost string `json:"rootHost,omitempty"`
 
 	// Username of new user to create.

charts/mysql-operator/crds/mysql.radondb.com_clusters.yaml

@@ -123,7 +123,7 @@ spec:
                     requests:
                       cpu: 100m
                       memory: 256Mi
-                  rootHost: 127.0.0.1
+                  rootHost: localhost
                   rootPassword: ""
                   user: qc_usr
                 description: MysqlOpts is the options of MySQL container.
@@ -184,7 +184,7 @@ spec:
                         type: object
                     type: object
                   rootHost:
-                    default: 127.0.0.1
+                    default: localhost
                     description: The root user's host.
                     type: string
                   rootPassword:

cluster/cluster.go

@@ -64,6 +64,10 @@ func (c *Cluster) Validate() error {
 		return fmt.Errorf("spec.mysqlOpts.user cannot be root|%s|%s|%s", utils.ReplicationUser, utils.OperatorUser, utils.MetricsUser)
 	}
 
+	if c.Spec.MysqlOpts.RootHost == "127.0.0.1" {
+		return fmt.Errorf("spec.mysqlOpts.rootHost cannot be 127.0.0.1")
+	}
+
 	return nil
 }
 

cluster/container/init_mysql_test.go

@@ -42,7 +42,7 @@ var (
 			},
 			MysqlVersion: "5.7",
 			MysqlOpts: mysqlv1alpha1.MysqlOpts{
-				RootHost:   "127.0.0.1",
+				RootHost:   "localhost",
 				InitTokuDB: false,
 			},
 		},
@@ -78,7 +78,7 @@ var (
 		},
 		{
 			Name:  "MYSQL_ROOT_HOST",
-			Value: "127.0.0.1",
+			Value: "localhost",
 		},
 		{
 			Name:  "MYSQL_INIT_ONLY",

cluster/syncer/secret.go

@@ -72,7 +72,7 @@ func NewSecretSyncer(cli client.Client, c *cluster.Cluster) syncer.Interface {
 			return err
 		}
 
-		if c.Spec.MysqlOpts.RootHost != "127.0.0.1" && c.Spec.MysqlOpts.RootPassword == "" {
+		if c.Spec.MysqlOpts.RootHost != "localhost" && c.Spec.MysqlOpts.RootPassword == "" {
 			if err := addRandomPassword(secret.Data, "root-password"); err != nil {
 				return err
 			}

cluster/syncer/statefulset.go

@@ -169,6 +169,10 @@ func (s *StatefulSetSyncer) createOrUpdate(ctx context.Context) (controllerutil.
 		return controllerutil.OperationResultNone, err
 	}
 
+	if err := s.updatePVC(ctx); err != nil {
+		return controllerutil.OperationResultNone, err
+	}
+
 	return controllerutil.OperationResultUpdated, nil
 }
 
@@ -397,10 +401,46 @@ func (s *StatefulSetSyncer) ensurePodSpec() corev1.PodSpec {
 	}
 }
 
+func (s *StatefulSetSyncer) updatePVC(ctx context.Context) error {
+	pvcs := corev1.PersistentVolumeClaimList{}
+	if err := s.cli.List(ctx,
+		&pvcs,
+		&client.ListOptions{
+			Namespace:     s.sfs.Namespace,
+			LabelSelector: s.GetLabels().AsSelector(),
+		},
+	); err != nil {
+		return err
+	}
+
+	for _, item := range pvcs.Items {
+		if item.DeletionTimestamp != nil {
+			log.Info("pvc is being deleted", "pvc", item.Name, "key", s.Unwrap())
+			continue
+		}
+
+		ordinal, err := utils.GetOrdinal(item.Name)
+		if err != nil {
+			log.Error(err, "pvc deletion error", "key", s.Unwrap())
+			continue
+		}
+
+		if ordinal >= int(*s.Spec.Replicas) {
+			log.Info("cleaning up pvc", "pvc", item.Name, "key", s.Unwrap())
+			if err := s.cli.Delete(ctx, &item); err != nil {
+				return err
+			}
+		}
+	}
+
+	return nil
+}
+
 func (s *StatefulSetSyncer) applyNWait(ctx context.Context, pod *corev1.Pod) error {
 	if pod.ObjectMeta.Labels["controller-revision-hash"] == s.sfs.Status.UpdateRevision {
 		log.Info("pod is already updated", "pod name", pod.Name)
 	} else {
+		log.Info("updating pod", "pod", pod.Name, "key", s.Unwrap())
 		if err := s.cli.Delete(ctx, pod); err != nil {
 			return err
 		}

config/crd/bases/mysql.radondb.com_clusters.yaml

@@ -123,7 +123,7 @@ spec:
                     requests:
                       cpu: 100m
                       memory: 256Mi
-                  rootHost: 127.0.0.1
+                  rootHost: localhost
                   rootPassword: ""
                   user: qc_usr
                 description: MysqlOpts is the options of MySQL container.
@@ -184,7 +184,7 @@ spec:
                         type: object
                     type: object
                   rootHost:
-                    default: 127.0.0.1
+                    default: localhost
                     description: The root user's host.
                     type: string
                   rootPassword:

config/samples/mysql_v1alpha1_cluster.yaml

@@ -8,7 +8,7 @@ spec:
 
   mysqlOpts:
     rootPassword: ""
-    rootHost: "127.0.0.1"
+    rootHost: localhost
     user: qc_usr
     password: Qing@123
     database: qingcloud

sidecar/config.go

@@ -146,7 +146,7 @@ func (cfg *Config) buildExtraConfig(filePath string) (*ini.File, error) {
 	conf := ini.Empty()
 	sec := conf.Section("mysqld")
 
-	ordinal, err := getOrdinal(cfg.HostName)
+	ordinal, err := utils.GetOrdinal(cfg.HostName)
 	if err != nil {
 		return nil, err
 	}
@@ -280,7 +280,7 @@ func (cfg *Config) buildClientConfig() (*ini.File, error) {
 }
 
 func (cfg *Config) buildPostStart() ([]byte, error) {
-	ordinal, err := getOrdinal(cfg.HostName)
+	ordinal, err := utils.GetOrdinal(cfg.HostName)
 	if err != nil {
 		return nil, err
 	}

sidecar/init.go

@@ -88,7 +88,7 @@ func runInitCommand(cfg *Config) error {
 		return fmt.Errorf("failed to save client.conf: %s", err)
 	}
 
-	if err = os.Mkdir(extraConfPath, os.FileMode(0644)); err != nil {
+	if err = os.Mkdir(extraConfPath, os.FileMode(0755)); err != nil {
 		if !os.IsExist(err) {
 			return fmt.Errorf("error mkdir %s: %s", extraConfPath, err)
 		}

sidecar/util.go

@@ -17,11 +17,8 @@ limitations under the License.
 package sidecar
 
 import (
-	"fmt"
 	"io"
 	"os"
-	"strconv"
-	"strings"
 
 	logf "sigs.k8s.io/controller-runtime/pkg/log"
 
@@ -102,20 +99,6 @@ func getEnvValue(key string) string {
 	return value
 }
 
-func getOrdinal(name string) (int, error) {
-	idx := strings.LastIndexAny(name, "-")
-	if idx == -1 {
-		return -1, fmt.Errorf("failed to extract ordinal from hostname: %s", name)
-	}
-
-	ordinal, err := strconv.Atoi(name[idx+1:])
-	if err != nil {
-		log.Error(err, "failed to extract ordinal form hostname", "hostname", name)
-		return -1, fmt.Errorf("failed to extract ordinal from hostname: %s", name)
-	}
-	return ordinal, nil
-}
-
 // checkIfPathExists check if the path exists.
 func checkIfPathExists(path string) (bool, error) {
 	f, err := os.Open(path)

utils/common.go

@@ -16,7 +16,12 @@ limitations under the License.
 
 package utils
 
-import "sort"
+import (
+	"fmt"
+	"sort"
+	"strconv"
+	"strings"
+)
 
 // Min returns the smallest int64 that was passed in the arguments.
 func Min(a, b uint64) uint64 {
@@ -40,3 +45,16 @@ func StringInArray(str string, strArray []string) bool {
 	index := sort.SearchStrings(strArray, str)
 	return index < len(strArray) && strArray[index] == str
 }
+
+func GetOrdinal(name string) (int, error) {
+	idx := strings.LastIndexAny(name, "-")
+	if idx == -1 {
+		return -1, fmt.Errorf("failed to extract ordinal from name: %s", name)
+	}
+
+	ordinal, err := strconv.Atoi(name[idx+1:])
+	if err != nil {
+		return -1, fmt.Errorf("failed to extract ordinal from name: %s", name)
+	}
+	return ordinal, nil
+}