MDEV-33212: mysqldump uses MASTER_LOG_POS with dump-slave

The patch for MDEV-15530 incorrectly added a column in the middle of SHOW
SLAVE STATUS output. This is wrong, as it breaks backwards compatibility
with existing applications and scripts. In this case, it even broke
mariadb-dump, which is included in the server source tree!

Revert the incorrect change, putting the new Replicate_Rewrite_DB at the end
of SHOW SLAVE STATUS output.

Add a testcase for the mariadb-dump --dump-slave wrong output problem. Also
add a testcase rpl.rpl_show_slave_status to hopefully prevent any future
incorrect additions to SHOW SLAVE STATUS.

Signed-off-by: Kristian Nielsen <knielsen@knielsen-hq.org>

mysql-test/include/check-testcase.test

@@ -32,7 +32,6 @@ if ($tmp)
   --echo Relay_Master_Log_File	#
   --echo Slave_IO_Running	No
   --echo Slave_SQL_Running	No
-  --echo Replicate_Rewrite_DB	#
   --echo Replicate_Do_DB	#
   --echo Replicate_Ignore_DB	#
   --echo Replicate_Do_Table	#
@@ -74,13 +73,22 @@ if ($tmp)
   --echo Slave_DDL_Groups	#
   --echo Slave_Non_Transactional_Groups	#
   --echo Slave_Transactional_Groups	#
+  --echo Replicate_Rewrite_DB	#
 }
 if (!$tmp) {
   # Note: after WL#5177, fields 13-18 shall not be filtered-out.
-  --replace_column 4 # 5 # 6 # 7 # 8 # 9 # 10 # 13 # 14 # 15 # 16 # 17 # 18 # 19 # 23 # 24 # 25 # 26 # 27 # 41 # 42 # 43 # 45 # 52 # 53 # 54 #
+  --replace_column 4 # 5 # 6 # 7 # 8 # 9 # 10 # 13 # 14 # 15 # 16 # 17 # 18 # 22 # 23 # 24 # 25 # 26 # 40 # 41 # 42 # 44 # 51 # 52 # 53 # 54 #
   query_vertical
   SHOW SLAVE STATUS;
 }
+#
+# Note, we must never, _ever_, add extra rows to this output of SHOW SLAVE
+# STATUS, except at the very end, as this breaks backwards compatibility
+# with applications or scripts that parse the output. This also means that
+# we cannot add _any_ new rows in a GA version if a different row was
+# already added in a later MariaDB version, as this would make it impossible
+# to merge the change up while preserving the order of rows.
+#
 
 #
 # Ensure that we don't get warnings from mysql.proc (used by check_mysqld)

mysql-test/include/search_pattern_in_file.inc

@@ -25,6 +25,7 @@
 #    Supported formats:
 #     - (default)  : "FOUND n /pattern/ in FILE " or "NOT FOUND ..."
 #     - "matches"  : Each match is printed, on a separate line
+#     - "count"    : "FOUND n matches in FILE" or "NOT FOUND ..." (omit pattern)
 #
 #    In case of
 #    - SEARCH_FILE and/or SEARCH_PATTERN is not set
@@ -113,6 +114,10 @@ perl;
                 print $_ . "\n";
             }
         }
+        elsif ($ENV{SEARCH_OUTPUT} eq "count")
+        {
+            print "$res matches in $ENV{SEARCH_FILE}\n";
+        }
         else
         {
             print "$res /$search_pattern/ in $ENV{SEARCH_FILE}\n";

mysql-test/main/rpl_mysqldump_slave.result

@@ -219,4 +219,8 @@ connection master;
 -- CHANGE MASTER TO MASTER_LOG_FILE='master-bin.000002', MASTER_LOG_POS=BINLOG_START;
 connection slave;
 include/start_slave.inc
+connection master;
+connection slave;
+connection master;
+FOUND 1 matches in MDEV-33212.sql
 include/rpl_end.inc

mysql-test/main/rpl_mysqldump_slave.test

@@ -198,4 +198,20 @@ if ($postdump_first_binary_log_filename != $postdump_binlog_filename)
 connection slave;
 --source include/start_slave.inc
 
+# MDEV-33212: mysqldump uses MASTER_LOG_POS with dump-slave
+# The bug was that the MASTER_LOG_POS was wrong. So check that it is correct.
+--connection master
+--let $pos= query_get_value(SHOW MASTER STATUS, Position, 1)
+--sync_slave_with_master
+--connection master
+--exec $MYSQL_DUMP_SLAVE --compact --dump-slave test >$MYSQLTEST_VARDIR/tmp/MDEV-33212.sql
+--let SEARCH_RANGE=500000000
+--let SEARCH_FILE=$MYSQLTEST_VARDIR/tmp/MDEV-33212.sql
+--let SEARCH_PATTERN= MASTER_LOG_POS=$pos
+--let SEARCH_OUTPUT=count
+--source include/search_pattern_in_file.inc
+
+--remove_file $MYSQLTEST_VARDIR/tmp/MDEV-33212.sql
+
+
 --source include/rpl_end.inc

mysql-test/suite/multi_source/info_logs.result

@@ -94,17 +94,17 @@ MASTER 2.2
 # EOF
 #
 show all slaves status;
-Connection_name	Slave_SQL_State	Slave_IO_State	Master_Host	Master_User	Master_Port	Connect_Retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_Rewrite_DB	Replicate_Do_DB	Replicate_Ignore_DB	Replicate_Do_Table	Replicate_Ignore_Table	Replicate_Wild_Do_Table	Replicate_Wild_Ignore_Table	Last_Errno	Last_Error	Skip_Counter	Exec_Master_Log_Pos	Relay_Log_Space	Until_Condition	Until_Log_File	Until_Log_Pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key	Seconds_Behind_Master	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	SQL_Delay	SQL_Remaining_Delay	Slave_SQL_Running_State	Slave_DDL_Groups	Slave_Non_Transactional_Groups	Slave_Transactional_Groups	Retried_transactions	Max_relay_log_size	Executed_log_entries	Slave_received_heartbeats	Slave_heartbeat_period	Gtid_Slave_Pos
-	Slave has read all relay log; waiting for more updates	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	<read_master_log_pos>	relay.000002	<relay_log_pos>	master-bin.000001	Yes	Yes								0		0	<read_master_log_pos>	<relay_log_space1>	None		0	No						0	No	0		0			1			No				optimistic	0	NULL	Slave has read all relay log; waiting for more updates	0	0	0	0	1073741824	7	0	60.000	
-MASTER 2.2	Slave has read all relay log; waiting for more updates	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	<read_master_log_pos>	relay-master@00202@002e2.000002	<relay_log_pos>	master-bin.000001	Yes	Yes								0		0	<read_master_log_pos>	<relay_log_space2>	None		0	No						0	No	0		0			2			No				optimistic	0	NULL	Slave has read all relay log; waiting for more updates	0	0	0	0	1073741824	7	0	60.000	
+Connection_name	Slave_SQL_State	Slave_IO_State	Master_Host	Master_User	Master_Port	Connect_Retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_Do_DB	Replicate_Ignore_DB	Replicate_Do_Table	Replicate_Ignore_Table	Replicate_Wild_Do_Table	Replicate_Wild_Ignore_Table	Last_Errno	Last_Error	Skip_Counter	Exec_Master_Log_Pos	Relay_Log_Space	Until_Condition	Until_Log_File	Until_Log_Pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key	Seconds_Behind_Master	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	SQL_Delay	SQL_Remaining_Delay	Slave_SQL_Running_State	Slave_DDL_Groups	Slave_Non_Transactional_Groups	Slave_Transactional_Groups	Replicate_Rewrite_DB	Retried_transactions	Max_relay_log_size	Executed_log_entries	Slave_received_heartbeats	Slave_heartbeat_period	Gtid_Slave_Pos
+	Slave has read all relay log; waiting for more updates	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	<read_master_log_pos>	relay.000002	<relay_log_pos>	master-bin.000001	Yes	Yes							0		0	<read_master_log_pos>	<relay_log_space1>	None		0	No						0	No	0		0			1			No				optimistic	0	NULL	Slave has read all relay log; waiting for more updates	0	0	0		0	1073741824	7	0	60.000	
+MASTER 2.2	Slave has read all relay log; waiting for more updates	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	<read_master_log_pos>	relay-master@00202@002e2.000002	<relay_log_pos>	master-bin.000001	Yes	Yes							0		0	<read_master_log_pos>	<relay_log_space2>	None		0	No						0	No	0		0			2			No				optimistic	0	NULL	Slave has read all relay log; waiting for more updates	0	0	0		0	1073741824	7	0	60.000	
 include/wait_for_slave_to_start.inc
 set default_master_connection = 'MASTER 2.2';
 include/wait_for_slave_to_start.inc
 set default_master_connection = '';
 show all slaves status;
-Connection_name	Slave_SQL_State	Slave_IO_State	Master_Host	Master_User	Master_Port	Connect_Retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_Rewrite_DB	Replicate_Do_DB	Replicate_Ignore_DB	Replicate_Do_Table	Replicate_Ignore_Table	Replicate_Wild_Do_Table	Replicate_Wild_Ignore_Table	Last_Errno	Last_Error	Skip_Counter	Exec_Master_Log_Pos	Relay_Log_Space	Until_Condition	Until_Log_File	Until_Log_Pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key	Seconds_Behind_Master	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	SQL_Delay	SQL_Remaining_Delay	Slave_SQL_Running_State	Slave_DDL_Groups	Slave_Non_Transactional_Groups	Slave_Transactional_Groups	Retried_transactions	Max_relay_log_size	Executed_log_entries	Slave_received_heartbeats	Slave_heartbeat_period	Gtid_Slave_Pos
-	Slave has read all relay log; waiting for more updates	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	<read_master_log_pos>	relay.000004	<relay_log_pos>	master-bin.000001	Yes	Yes								0		0	<read_master_log_pos>	<relay_log_space1>	None		0	No						0	No	0		0			1			No				optimistic	0	NULL	Slave has read all relay log; waiting for more updates	0	0	0	0	1073741824	6	0	60.000	
-MASTER 2.2	Slave has read all relay log; waiting for more updates	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	<read_master_log_pos>	relay-master@00202@002e2.000004	<relay_log_pos>	master-bin.000001	Yes	Yes								0		0	<read_master_log_pos>	<relay_log_space2>	None		0	No						0	No	0		0			2			No				optimistic	0	NULL	Slave has read all relay log; waiting for more updates	0	0	0	0	1073741824	6	0	60.000	
+Connection_name	Slave_SQL_State	Slave_IO_State	Master_Host	Master_User	Master_Port	Connect_Retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_Do_DB	Replicate_Ignore_DB	Replicate_Do_Table	Replicate_Ignore_Table	Replicate_Wild_Do_Table	Replicate_Wild_Ignore_Table	Last_Errno	Last_Error	Skip_Counter	Exec_Master_Log_Pos	Relay_Log_Space	Until_Condition	Until_Log_File	Until_Log_Pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key	Seconds_Behind_Master	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	SQL_Delay	SQL_Remaining_Delay	Slave_SQL_Running_State	Slave_DDL_Groups	Slave_Non_Transactional_Groups	Slave_Transactional_Groups	Replicate_Rewrite_DB	Retried_transactions	Max_relay_log_size	Executed_log_entries	Slave_received_heartbeats	Slave_heartbeat_period	Gtid_Slave_Pos
+	Slave has read all relay log; waiting for more updates	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	<read_master_log_pos>	relay.000004	<relay_log_pos>	master-bin.000001	Yes	Yes							0		0	<read_master_log_pos>	<relay_log_space1>	None		0	No						0	No	0		0			1			No				optimistic	0	NULL	Slave has read all relay log; waiting for more updates	0	0	0		0	1073741824	6	0	60.000	
+MASTER 2.2	Slave has read all relay log; waiting for more updates	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	<read_master_log_pos>	relay-master@00202@002e2.000004	<relay_log_pos>	master-bin.000001	Yes	Yes							0		0	<read_master_log_pos>	<relay_log_space2>	None		0	No						0	No	0		0			2			No				optimistic	0	NULL	Slave has read all relay log; waiting for more updates	0	0	0		0	1073741824	6	0	60.000	
 #
 # List of files matching '*info*' pattern
 #   after slave server restart

mysql-test/suite/multi_source/multi_source_slave_alias_replica.result

@@ -34,7 +34,6 @@ Relay_Log_Pos	<relay_log_pos>
 Relay_Master_Log_File	master-bin.000001
 Slave_IO_Running	Yes
 Slave_SQL_Running	Yes
-Replicate_Rewrite_DB	
 Replicate_Do_DB	
 Replicate_Ignore_DB	
 Replicate_Do_Table	
@@ -76,6 +75,7 @@ Slave_SQL_Running_State	Slave has read all relay log; waiting for more updates
 Slave_DDL_Groups	0
 Slave_Non_Transactional_Groups	0
 Slave_Transactional_Groups	0
+Replicate_Rewrite_DB	
 Retried_transactions	0
 Max_relay_log_size	1073741824
 Executed_log_entries	7
@@ -96,7 +96,6 @@ Relay_Log_Pos	<relay_log_pos>
 Relay_Master_Log_File	master-bin.000001
 Slave_IO_Running	Yes
 Slave_SQL_Running	Yes
-Replicate_Rewrite_DB	
 Replicate_Do_DB	
 Replicate_Ignore_DB	
 Replicate_Do_Table	
@@ -138,6 +137,7 @@ Slave_SQL_Running_State	Slave has read all relay log; waiting for more updates
 Slave_DDL_Groups	0
 Slave_Non_Transactional_Groups	0
 Slave_Transactional_Groups	0
+Replicate_Rewrite_DB	
 Retried_transactions	0
 Max_relay_log_size	1073741824
 Executed_log_entries	7

mysql-test/suite/multi_source/reset_slave.result

@@ -13,15 +13,15 @@ insert into t1 values (1),(2);
 connection slave;
 stop slave 'master1';
 show slave 'master1' status;
-Slave_IO_State	Master_Host	Master_User	Master_Port	Connect_Retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_Rewrite_DB	Replicate_Do_DB	Replicate_Ignore_DB	Replicate_Do_Table	Replicate_Ignore_Table	Replicate_Wild_Do_Table	Replicate_Wild_Ignore_Table	Last_Errno	Last_Error	Skip_Counter	Exec_Master_Log_Pos	Relay_Log_Space	Until_Condition	Until_Log_File	Until_Log_Pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key	Seconds_Behind_Master	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	SQL_Delay	SQL_Remaining_Delay	Slave_SQL_Running_State	Slave_DDL_Groups	Slave_Non_Transactional_Groups	Slave_Transactional_Groups
-	127.0.0.1	root	MYPORT_1	60	master-bin.000001	<read_master_log_pos>	mysqld-relay-bin-master1.000002	<relay_log_pos>	master-bin.000001	No	No								0		0	<read_master_log_pos>	<relay_log_space>	None		0	No						NULL	No	0		0			1			Slave_Pos	0-1-3			optimistic	0	NULL		2	1	0
+Slave_IO_State	Master_Host	Master_User	Master_Port	Connect_Retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_Do_DB	Replicate_Ignore_DB	Replicate_Do_Table	Replicate_Ignore_Table	Replicate_Wild_Do_Table	Replicate_Wild_Ignore_Table	Last_Errno	Last_Error	Skip_Counter	Exec_Master_Log_Pos	Relay_Log_Space	Until_Condition	Until_Log_File	Until_Log_Pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key	Seconds_Behind_Master	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	SQL_Delay	SQL_Remaining_Delay	Slave_SQL_Running_State	Slave_DDL_Groups	Slave_Non_Transactional_Groups	Slave_Transactional_Groups	Replicate_Rewrite_DB
+	127.0.0.1	root	MYPORT_1	60	master-bin.000001	<read_master_log_pos>	mysqld-relay-bin-master1.000002	<relay_log_pos>	master-bin.000001	No	No							0		0	<read_master_log_pos>	<relay_log_space>	None		0	No						NULL	No	0		0			1			Slave_Pos	0-1-3			optimistic	0	NULL		2	1	0	
 mysqld-relay-bin-master1.000001
 mysqld-relay-bin-master1.000002
 mysqld-relay-bin-master1.index
 reset slave 'master1';
 show slave 'master1' status;
-Slave_IO_State	Master_Host	Master_User	Master_Port	Connect_Retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_Rewrite_DB	Replicate_Do_DB	Replicate_Ignore_DB	Replicate_Do_Table	Replicate_Ignore_Table	Replicate_Wild_Do_Table	Replicate_Wild_Ignore_Table	Last_Errno	Last_Error	Skip_Counter	Exec_Master_Log_Pos	Relay_Log_Space	Until_Condition	Until_Log_File	Until_Log_Pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key	Seconds_Behind_Master	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	SQL_Delay	SQL_Remaining_Delay	Slave_SQL_Running_State	Slave_DDL_Groups	Slave_Non_Transactional_Groups	Slave_Transactional_Groups
-	127.0.0.1	root	MYPORT_1	60		4		<relay_log_pos>		No	No								0		0	0	<relay_log_space>	None		0	No						NULL	No	0		0			1			Slave_Pos				optimistic	0	NULL		2	1	0
+Slave_IO_State	Master_Host	Master_User	Master_Port	Connect_Retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_Do_DB	Replicate_Ignore_DB	Replicate_Do_Table	Replicate_Ignore_Table	Replicate_Wild_Do_Table	Replicate_Wild_Ignore_Table	Last_Errno	Last_Error	Skip_Counter	Exec_Master_Log_Pos	Relay_Log_Space	Until_Condition	Until_Log_File	Until_Log_Pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key	Seconds_Behind_Master	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	SQL_Delay	SQL_Remaining_Delay	Slave_SQL_Running_State	Slave_DDL_Groups	Slave_Non_Transactional_Groups	Slave_Transactional_Groups	Replicate_Rewrite_DB
+	127.0.0.1	root	MYPORT_1	60		4		<relay_log_pos>		No	No							0		0	0	<relay_log_space>	None		0	No						NULL	No	0		0			1			Slave_Pos				optimistic	0	NULL		2	1	0	
 reset slave 'master1' all;
 show slave 'master1' status;
 ERROR HY000: There is no master connection 'master1'