Unable to start MySQL INnoDB Cluster version 5.7 : The Metadata is inaccessible

[Yoav Ben Moha]

Hello ,

I have successfully installed MySQL InnoDB Cluster version 5.7 whith 3 nodes.
Node1 (Mysql1) was the Primary node , MySQL2+3 Nodes where the Sconderies nodes.
The cluster was up and running for a while.
After rebooting ALL the machines the cluister failed to start.

-- Connect to Originally Primary machine :

[mysql@MySql1 ~]$ mysqlsh
MySQL Shell 8.0.3-dmr

Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type '\help' or '\?' for help; '\quit' to exit.

MySQL JS > var i1='admin@mysql1:3306'
MySQL JS > var i2='admin@mysql2:3306'
MySQL JS > var i3='admin@mysql3:3306'
MySQL JS > shell.connect(i1)
Please provide the password for 'admin@mysql1:3306': *****
Creating a session to 'admin@mysql1:3306'
Your MySQL connection id is 39
No default schema selected; type \use <schema> to set one.
MySQL JS >
MySQL JS > dba.rebootClusterFromCompleteOutage('mycluster')
Reconfiguring the cluster 'mycluster' from complete outage...

The instance 'mysql2:3306' was part of the cluster configuration.

Would you like to rejoin it to the cluster? [y|N]: y

The instance 'mysql3:3306' was part of the cluster configuration.

Would you like to rejoin it to the cluster? [y|N]: y

Dba.rebootClusterFromCompleteOutage: Dba.rebootClusterFromCompleteOutage:
The active session instance isn't the most updated in comparison with the ONLINE instances of the Cluster's metadata.
Please use the most up to date instance: 'mysql3:3306'. (RuntimeError)
MySQL JS >


-- So , i tried to connect to Node 3 and run :

[mysql@MySql3 ~]$ mysqlsh
MySQL Shell 8.0.3-dmr
Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

MySQL JS > cluster.status();
ReferenceError: cluster is not defined

MySQL JS > var cluster = dba.rebootClusterFromCompleteOutage();
The Metadata is inaccessible, an active session is required (LogicError)

Also all the MySQL shows :

mysql> select * from performance_schema.replication_group_members;
+---------------------------+-----------+-------------+-------------+--------------+
| CHANNEL_NAME | MEMBER_ID | MEMBER_HOST | MEMBER_PORT | MEMBER_STATE |
+---------------------------+-----------+-------------+-------------+--------------+
| group_replication_applier | | | NULL | OFFLINE |
+---------------------------+-----------+-------------+-------------+--------------+
1 row in set (0.00 sec)

Please advise how to restart the cluster

Thanks