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Configuring an async slave off of a master-master cluster

Ron_JohnsonRon_Johnson ContributorCurrent User Role Beginner
Hi,
# mysqld --version
mysqld  Ver 5.7.14-8-57 for Linux on x86_64 (Percona XtraDB Cluster (GPL), Release rel8, Revision a3f9d06, WSREP version 26.17, wsrep_26.17)

When following the directions in blog post https://www.percona.com/blog/2015/02/20/how-to-setup-a-pxc-cluster-with-gtids-and-have-async-slaves-replicating-from-it/, this happens when I try to set the purged GTID:
mysql> SET @@global.gtid_purged='dd154cf1-8bba-ee19-4b02-25f924665db9:1';
ERROR 1840 (HY000): @@GLOBAL.GTID_PURGED can only be set when @@GLOBAL.GTID_EXECUTED is empty.

mysql> select @@GLOBAL.GTID_EXECUTED;
+------------------------------------------+
| @@GLOBAL.GTID_EXECUTED                   |
+------------------------------------------+
| 5057be81-c682-11e6-9b3e-005056a70e8c:1-2 |
+------------------------------------------+
1 row in set (0.00 sec)

When I I know this because I copy/pasted it to the implementation document...

Thoughts?
mysql> START SLAVE;
Query OK, 0 rows affected (0.01 sec)

mysql> SHOW SLAVE STATUS \G
*************************** 1. row ***************************
               Slave_IO_State: Connecting to master
                  Master_Host: 10.0.83.42
                  Master_User: repl
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File:
          Read_Master_Log_Pos: 4
               Relay_Log_File: mysql-relay-bin.000001
                Relay_Log_Pos: 4
        Relay_Master_Log_File:
             Slave_IO_Running: Connecting
            Slave_SQL_Running: Yes
              Replicate_Do_DB:
          Replicate_Ignore_DB:
           Replicate_Do_Table:
       Replicate_Ignore_Table:
      Replicate_Wild_Do_Table:
  Replicate_Wild_Ignore_Table:
                   Last_Errno: 0
                   Last_Error:
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 0
              Relay_Log_Space: 154
              Until_Condition: None
               Until_Log_File:
                Until_Log_Pos: 0
           Master_SSL_Allowed: No
           Master_SSL_CA_File:
           Master_SSL_CA_Path:
              Master_SSL_Cert:
            Master_SSL_Cipher:
               Master_SSL_Key:
        Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 1045
                Last_IO_Error: error connecting to master 'repl@10.0.83.42:3306' - retry-time: 60  retries: 1
               Last_SQL_Errno: 0
               Last_SQL_Error:
  Replicate_Ignore_Server_Ids:
             Master_Server_Id: 0
                  Master_UUID:
             Master_Info_File: /datadrive/mysql/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
           Master_Retry_Count: 86400
                  Master_Bind:
      Last_IO_Error_Timestamp: 161220 02:30:38
     Last_SQL_Error_Timestamp:
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set:
            Executed_Gtid_Set: 5057be81-c682-11e6-9b3e-005056a70e8c:1-2
                Auto_Position: 1
         Replicate_Rewrite_DB:
                 Channel_Name:
           Master_TLS_Version:
1 row in set (0.00 sec)

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