SHOW SLAVE STATUS

Syntax:
SHOW SLAVE STATUS [FOR CHANNEL channel]

This statement provides status information on essential parameters of
the replica threads. It requires the REPLICATION CLIENT privilege (or
the deprecated SUPER privilege).

SHOW SLAVE STATUS is nonblocking. When run concurrently with STOP
SLAVE, SHOW SLAVE STATUS returns without waiting for STOP SLAVE to
finish shutting down the replica SQL thread or replica I/O thread (or
both). This permits use in monitoring and other applications where
getting an immediate response from SHOW SLAVE STATUS more important
than ensuring that it returned the latest data.

If you issue this statement using the mysql client, you can use a \G
statement terminator rather than a semicolon to obtain a more readable
vertical layout:

mysql> SHOW SLAVE STATUS\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: localhost
Master_User: repl
Master_Port: 13000
Connect_Retry: 60
Master_Log_File: source-bin.000002
Read_Master_Log_Pos: 1307
Relay_Log_File: replica-relay-bin.000003
Relay_Log_Pos: 1508
Relay_Master_Log_File: source-bin.000002
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: 1307
Relay_Log_Space: 1858
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: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: 3e11fa47-71ca-11e1-9e33-c80aa9429562
Master_Info_File:
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Reading event from the relay log
Master_Retry_Count: 10
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: 3e11fa47-71ca-11e1-9e33-c80aa9429562:1-5
Executed_Gtid_Set: 3e11fa47-71ca-11e1-9e33-c80aa9429562:1-5
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_name:
Master_TLS_Version: TLSv1.2
Master_public_key_path: public_key.pem
Get_master_public_key: 0

The Performance Schema provides tables that expose replication
information. This is similar to the information available from the SHOW
SLAVE STATUS statement, but represented in table form.