[BUG] polardbx cluster create ERROR 2003 (HY000): Can't connect to MySQL server on 'polardbx-joqvbv-gms:3306' (110)

[JashBook]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. create cluster

apiVersion: apps.kubeblocks.io/v1
kind: Cluster
metadata:
  name: polardbx-joqvbv
  namespace: default
spec:
  componentSpecs:
  - componentDef: polardbx-gms-1.0.0-alpha.0
    name: gms
    replicas: 3
    resources:
      limits:
        cpu: 500m
        memory: 1Gi
      requests:
        cpu: 500m
        memory: 1Gi
    serviceVersion: 2.3.0
    volumeClaimTemplates:
    - name: data
      spec:
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 20Gi
  - componentDef: polardbx-dn-1.0.0-alpha.0
    name: dn
    replicas: 3
    resources:
      limits:
        cpu: 500m
        memory: 1Gi
      requests:
        cpu: 500m
        memory: 1Gi
    serviceVersion: 2.3.0
    volumeClaimTemplates:
    - name: data
      spec:
        accessModes:
        - ReadWriteOnce
        resources:
          requests:
            storage: 20Gi
  - componentDef: polardbx-cn-1.0.0-alpha.0
    name: cn
    replicas: 1
    resources:
      limits:
        cpu: 500m
        memory: 1Gi
      requests:
        cpu: 500m
        memory: 1Gi
    serviceVersion: 2.3.0
  - componentDef: polardbx-cdc-1.0.0-alpha.0
    name: cdc
    replicas: 1
    resources:
      limits:
        cpu: 500m
        memory: 1Gi
      requests:
        cpu: 500m
        memory: 1Gi
    serviceVersion: 2.3.0
  terminationPolicy: WipeOut

3. See error

➜  ~ kubectl get cluster polardbx-joqvbv 
NAME              CLUSTER-DEFINITION   TERMINATION-POLICY   STATUS     AGE
polardbx-joqvbv                        WipeOut              Creating   25m
➜  ~ 
➜  ~ kubectl get pod -l app.kubernetes.io/instance=polardbx-joqvbv 
NAME                    READY   STATUS     RESTARTS   AGE
polardbx-joqvbv-cdc-0   0/2     Init:0/1   0          25m
polardbx-joqvbv-cn-0    0/2     Init:0/2   0          25m
polardbx-joqvbv-dn-0    3/3     Running    0          25m
polardbx-joqvbv-dn-1    3/3     Running    0          23m
polardbx-joqvbv-dn-2    3/3     Running    0          22m
polardbx-joqvbv-gms-0   3/3     Running    0          25m
polardbx-joqvbv-gms-1   3/3     Running    0          23m
polardbx-joqvbv-gms-2   3/3     Running    0          22m

logs pod

➜  ~ kubectl logs polardbx-joqvbv-cdc-0 wait-cn-ready 
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can't connect to MySQL server on 'polardbx-joqvbv-cn:3306' (110)
cn is not ready
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can't connect to MySQL server on 'polardbx-joqvbv-cn:3306' (110)
cn is not ready
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can't connect to MySQL server on 'polardbx-joqvbv-cn:3306' (110)
cn is not ready
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can't connect to MySQL server on 'polardbx-joqvbv-cn:3306' (110)
cn is not ready
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can't connect to MySQL server on 'polardbx-joqvbv-cn:3306' (110)
cn is not ready
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can't connect to MySQL server on 'polardbx-joqvbv-cn:3306' (110)
cn is not ready
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can't connect to MySQL server on 'polardbx-joqvbv-cn:3306' (110)
cn is not ready
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can't connect to MySQL server on 'polardbx-joqvbv-cn:3306' (110)
cn is not ready
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can't connect to MySQL server on 'polardbx-joqvbv-cn:3306' (110)
cn is not ready
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can't connect to MySQL server on 'polardbx-joqvbv-cn:3306' (110)
cn is not ready
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can't connect to MySQL server on 'polardbx-joqvbv-cn:3306' (110)
cn is not ready
mysql: [Warning] Using a password on the command line interface can be insecure.
➜  ~ 
➜  ~ kubectl logs polardbx-joqvbv-cn-0 metadb-init 
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can't connect to MySQL server on 'polardbx-joqvbv-gms:3306' (110)
wait gms ready
mysql: [Warning] Using a password on the command line interface can be insecure.
ERROR 2003 (HY000): Can't connect to MySQL server on 'polardbx-joqvbv-gms:3306' (110)
wait gms ready
mysql: [Warning] Using a password on the command line interface can be insecure.
➜  ~ 

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