It seems MaxScale doesn't yet support MySQL 8 correctly - node id, master id and replication depth are all incorrect. Please add support 
[root@sql-proxy01 ~]# maxadmin show server mysql04
|
Server 0x25cf450 (mysql04)
|
Server: 192.168.10.231
|
Status: Running
|
Protocol: MySQLBackend
|
Port: 3306
|
Server Version:
|
Node Id: -1
|
Master Id: -1
|
Last event: server_up
|
Triggered at: Fri, 04 May 2018 06:07:26 GMT
|
Slave Ids:
|
Repl Depth: -1
|
Number of connections: 0
|
Current no. of conns: 0
|
Current no. of operations: 0
|
Persistent pool size: 0
|
Persistent measured pool size: 0
|
Persistent actual size max: 0
|
Persistent pool size limit: 100
|
Persistent max time (secs): 3600
|
Connections taken from pool: 0
|
Pool availability: 0.00%
|
SHOW SLAVE STATUS output
mysql> SHOW SLAVE STATUS\G
|
*************************** 1. row ***************************
|
Slave_IO_State: Waiting for master to send event
|
Master_Host: slave2
|
Master_User: repl
|
Master_Port: 3306
|
Connect_Retry: 60
|
Master_Log_File: mysql-bin.001505
|
Read_Master_Log_Pos: 849378490
|
Relay_Log_File: overlord-relay-bin.000664
|
Relay_Log_Pos: 796836023
|
Relay_Master_Log_File: mysql-bin.001504
|
Slave_IO_Running: Yes
|
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: 796835809
|
Relay_Log_Space: 1923122491
|
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: 18479
|
Master_SSL_Verify_Server_Cert: No
|
Last_IO_Errno: 0
|
Last_IO_Error:
|
Last_SQL_Errno: 0
|
Last_SQL_Error:
|
Replicate_Ignore_Server_Ids:
|
Master_Server_Id: 3
|
Master_UUID: 036f16f4-8cdc-11e5-a40b-cef5953dbfa6
|
Master_Info_File: mysql.slave_master_info
|
SQL_Delay: 0
|
SQL_Remaining_Delay: NULL
|
Slave_SQL_Running_State: Reading event from the relay log
|
Master_Retry_Count: 86400
|
Master_Bind:
|
Last_IO_Error_Timestamp:
|
Last_SQL_Error_Timestamp:
|
Master_SSL_Crl:
|
Master_SSL_Crlpath:
|
Retrieved_Gtid_Set:
|
Executed_Gtid_Set:
|
Auto_Position: 0
|
Replicate_Rewrite_DB:
|
Channel_Name:
|
Master_TLS_Version:
|
Master_public_key_path:
|
Get_master_public_key: 0
|
1 row in set (0.00 sec)
|