GTID环境中手动修复主从故障一例(Error 1146)
[root@zlm2 :: /data/mysql/mysql3306/logs]
#sysbench oltp_read_write.lua --mysql-host=192.168.1.101 --mysql-port= --mysql-user=zlm --mysql-password=zlmzlm --mysql-db=sysbench --tables= --table-size= --mysql-storage-engine=innodb cleanup
sysbench 1.0. (using bundled LuaJIT 2.1.-beta2) Dropping table 'sbtest1'... (zlm@192.168.1.101 )[(none)]>use sysbench;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A Database changed
(zlm@192.168.1.101 )[sysbench]>show tables;
+--------------------+
| Tables_in_sysbench |
+--------------------+
| hb |
| sbtest2 |
| sbtest3 |
| sbtest4 |
| sbtest5 |
+--------------------+
rows in set (0.00 sec) //Only sbtest1 was deleted.It's not enough. [root@zlm2 :: ~/sysbench-1.0/src/lua]
#sysbench oltp_read_write.lua --mysql-host=192.168.1.101 --mysql-port= --mysql-user=zlm --mysql-password=zlmzlm --mysql-db=sysbench --tables= --table-size= --mysql-storage-engine=innodb cleanup
sysbench 1.0. (using bundled LuaJIT 2.1.-beta2) Dropping table 'sbtest1'...
Dropping table 'sbtest2'...
Dropping table 'sbtest3'...
Dropping table 'sbtest4'...
Dropping table 'sbtest5'... [root@zlm2 :: ~/sysbench-1.0/src/lua]
#df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root .4G .9G .5G % / //I'd got 27% free space.
devtmpfs 488M 488M % /dev
tmpfs 497M 497M % /dev/shm
tmpfs 497M 6.6M 491M % /run
tmpfs 497M 497M % /sys/fs/cgroup
/dev/sda1 497M 118M 379M % /boot
none 87G 80G .6G % /vagrant (zlm@192.168.1.101 )[(none)]>drop database sysbench;
Query OK, row affected (0.04 sec) //Further more,I dropped the "sysbench".
[root@zlm3 :: ~]
#df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root .4G .4G 20K % /
devtmpfs 488M 488M % /dev
tmpfs 497M 497M % /dev/shm
tmpfs 497M 6.5M 491M % /run
tmpfs 497M 497M % /sys/fs/cgroup
/dev/sda1 497M 118M 379M % /boot
none 87G 80G .6G % /vagrant (zlm@192.168.1.102 )[(none)]>show slave status\G
^C^C -- query aborted ^Z
[]+ Stopped mysql [root@zlm3 :: ~]
#pkill mysqld [root@zlm3 :: ~]
#./mysqld.sh [root@zlm3 :: ~]
#mysql
ERROR (HY000): Can't connect to MySQL server on '192.168.1.102' (111) [root@zlm3 :: ~]
#cd /data/mysql/mysql3306/data [root@zlm3 :: /data/mysql/mysql3306/data]
#cat error.log |tail -n
--19T08::02.581937+: [Note] InnoDB: Log scan progressed past the checkpoint lsn
--19T08::02.581958+: [Note] InnoDB: Doing recovery: scanned up to log sequence number
--19T08::02.581963+: [Note] InnoDB: Database was not shutdown normally!
--19T08::02.581965+: [Note] InnoDB: Starting crash recovery.
--19T08::02.696292+: [Note] InnoDB: Transaction was in the XA prepared state.
--19T08::02.700688+: [Note] InnoDB: Transaction was in the XA prepared state.
--19T08::02.700814+: [Note] InnoDB: transaction(s) which must be rolled back or cleaned up in total row operations to undo
--19T08::02.700821+: [Note] InnoDB: Trx id counter is
--19T08::02.701719+: [Note] InnoDB: Last MySQL binlog file position , file name mysql-bin.
--19T08::02.805965+: [Note] InnoDB: Ignoring tablespace `zlm`.`sbtest2` because the DISCARD flag is set .
--19T08::02.806462+: [Note] InnoDB: Creating shared tablespace for temporary tables
--19T08::02.807316+: [Note] InnoDB: Setting file './ibtmp1' size to MB. Physically writing the file full; Please wait ...
--19T08::02.807568+: [Note] InnoDB: Starting in background the rollback of uncommitted transactions
--19T08::02.807594+: [Note] InnoDB: Rollback of non-prepared transactions completed
--19T08::02.871396+: [Warning] InnoDB: Retry attempts for writing partial data failed.
--19T08::02.871423+: [ERROR] InnoDB: Write to file ./ibtmp1failed at offset , bytes should have been written, only were written. Operating system error number . Check that your OS and file system support files of this size. Check also that the disk is not full or a disk quota exceeded.
--19T08::02.871441+: [ERROR] InnoDB: Error number means 'No space left on device'
--19T08::02.871446+: [Note] InnoDB: Some operating system error numbers are described at http://dev.mysql.com/doc/refman/5.7/en/operating-system-error-codes.html
--19T08::02.871451+: [ERROR] InnoDB: Could not set the file size of './ibtmp1'. Probably out of disk space
--19T08::02.871456+: [ERROR] InnoDB: Unable to create the shared innodb_temporary
--19T08::02.871459+: [ERROR] InnoDB: Plugin initialization aborted with error Generic error
--19T08::03.273011+: [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
--19T08::03.273029+: [ERROR] Plugin 'InnoDB' init function returned error.
--19T08::03.273033+: [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
--19T08::03.273037+: [ERROR] Failed to initialize builtin plugins.
--19T08::03.273040+: [ERROR] Aborting --19T08::03.273046+: [Note] Binlog end
--19T08::03.273389+: [Note] mysqld: Shutdown complete //The mysqld process could not run again because of no free disk space.
[root@zlm3 :: /data/mysql/mysql3306]
#cd logs [root@zlm3 :: /data/mysql/mysql3306/logs]
#ls -l
total
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.
-rw-r----- mysql mysql Jul : mysql-bin.index [root@zlm3 :: /data/mysql/mysql3306/logs]
#rm -f * [root@zlm3 :: /data/mysql/mysql3306/logs]
#ls -l
total [root@zlm3 :: ~]
#df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/centos-root .4G .5G .0G % / //The free disk space had been reduced to 47%.
devtmpfs 488M 488M % /dev
tmpfs 497M 497M % /dev/shm
tmpfs 497M 6.5M 491M % /run
tmpfs 497M 497M % /sys/fs/cgroup
/dev/sda1 497M 118M 379M % /boot
none 87G 80G .6G % /vagrant
[root@zlm3 :: /data/mysql/mysql3306/logs]
#sh /root/mysqld.sh [root@zlm3 :: /data/mysql/mysql3306/logs]
#ps aux|grep mysqld
mysql 7.0 17.8 pts/ Sl : : mysqld --defaults-file=/data/mysql/mysql3306/my.cnf
root 0.0 0.0 pts/ R+ : : grep --color=auto mysqld [root@zlm3 :: /data/mysql/mysql3306/logs]
#mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is
Server version: 5.7.-log MySQL Community Server (GPL) Copyright (c) , , 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 '\h' for help. Type '\c' to clear the current input statement. (zlm@192.168.1.102 )[(none)]>drop database sysbench;
Query OK, rows affected (0.11 sec)
Started the replication threads of slave.
(zlm@192.168.1.102 )[(none)]>start slave;
Query OK, rows affected (0.00 sec) (zlm@192.168.1.102 )[(none)]>show slave status\G
*************************** . row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.101
Master_User: repl
Master_Port:
Connect_Retry:
Master_Log_File: mysql-bin.
Read_Master_Log_Pos:
Relay_Log_File: relay-bin.
Relay_Log_Pos:
Relay_Master_Log_File: mysql-bin.
Slave_IO_Running: Yes
Slave_SQL_Running: No
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno:
Last_Error: Error executing row event: 'Table 'sysbench.sbtest1' doesn't exist'
Skip_Counter:
Exec_Master_Log_Pos:
Relay_Log_Space:
Until_Condition: None
Until_Log_File:
Until_Log_Pos:
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno:
Last_IO_Error:
Last_SQL_Errno:
Last_SQL_Error: Error executing row event: 'Table 'sysbench.sbtest1' doesn't exist' //Since the database had been droppted.This error was notable.
Replicate_Ignore_Server_Ids:
Master_Server_Id:
Master_UUID: 1b7181ee-6eaf-11e8-998e-080027de0e0e
Master_Info_File: mysql.slave_master_info
SQL_Delay:
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State:
Master_Retry_Count:
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp: ::
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: 1b7181ee-6eaf-11e8-998e-080027de0e0e:- //It was stuck on transaction 3714549(which contained error).
Executed_Gtid_Set: 1b7181ee-6eaf-11e8-998e-080027de0e0e:-,
5c77c31b-4add-11e8-81e2-080027de0e0e:-
Auto_Position:
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
row in set (0.00 sec) [root@zlm3 :: ~]
#perror
MySQL error code (ER_NO_SUCH_TABLE): Table '%-.192s.%-.192s' doesn't exist //Error 1146 indicated the absence of table "sbtest1" in "sysbench" database.
//Obviously,the slave was replaying the operations relevant to this table on master.The table even the database had been dropped.
//How could I do next step?Do I have to generate a new mysqldump file and reconfigure the slave again?
//There's One thing I'm rather sure that there were no other transactions generated in the whole course except the operations on "sysbench" database.
//Since I'd drop "sysbentch" database on both master and slave.Maybe I can fix the issue easily.
Checked the Executed_Gtid_Set on master.
(zlm@192.168.1.101 )[(none)]>show master status;
+------------------+-----------+--------------+------------------+------------------------------------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+-----------+--------------+------------------+------------------------------------------------+
| mysql-bin. | | | | 1b7181ee-6eaf-11e8-998e-080027de0e0e:- |
+------------------+-----------+--------------+------------------+------------------------------------------------+
row in set (0.00 sec) //The executed gtid was upto "3730021".
Tryed to fix the replica of master.
(zlm@192.168.1.102 )[(none)]>show slave status\G
*************************** . row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.101
Master_User: repl
Master_Port:
Connect_Retry:
Master_Log_File: mysql-bin.
Read_Master_Log_Pos:
Relay_Log_File: relay-bin.
Relay_Log_Pos:
Relay_Master_Log_File: mysql-bin.
Slave_IO_Running: Yes
Slave_SQL_Running: No
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno:
Last_Error: Error executing row event: 'Table 'sysbench.sbtest1' doesn't exist'
Skip_Counter:
Exec_Master_Log_Pos:
Relay_Log_Space:
Until_Condition: None
Until_Log_File:
Until_Log_Pos:
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno:
Last_IO_Error:
Last_SQL_Errno:
Last_SQL_Error: Error executing row event: 'Table 'sysbench.sbtest1' doesn't exist'
Replicate_Ignore_Server_Ids:
Master_Server_Id:
Master_UUID: 1b7181ee-6eaf-11e8-998e-080027de0e0e
Master_Info_File: mysql.slave_master_info
SQL_Delay:
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State:
Master_Retry_Count:
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp: ::
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: 1b7181ee-6eaf-11e8-998e-080027de0e0e:-
Executed_Gtid_Set:
Auto_Position:
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
row in set (0.00 sec) (zlm@192.168.1.102 )[(none)]>reset master;
Query OK, rows affected (0.02 sec) (zlm@192.168.1.102 )[(none)]>set @@global.gtid_purged='1b7181ee-6eaf-11e8-998e-080027de0e0e:1-3730021';
Query OK, rows affected (0.00 sec) //On account of surely knowing there were no other transactions at all.I set the "gtid_purged" variable to the value of "gtid_executed" on master.
//It means I guised that all the transactions generated on master had been replayed on slave already.The slave could retrieve new GTID at the moment. (zlm@192.168.1.102 )[(none)]>start slave sql_thread;
Query OK, rows affected (0.02 sec) (zlm@192.168.1.102 )[(none)]>show slave status\G
*************************** . row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.101
Master_User: repl
Master_Port:
Connect_Retry:
Master_Log_File: mysql-bin.
Read_Master_Log_Pos:
Relay_Log_File: relay-bin.
Relay_Log_Pos:
Relay_Master_Log_File: mysql-bin.
Slave_IO_Running: Yes
Slave_SQL_Running: Yes //The sql_thread became "Yes".
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: None
Until_Log_File:
Until_Log_Pos:
Master_SSL_Allowed: No
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: No
Last_IO_Errno:
Last_IO_Error:
Last_SQL_Errno:
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id:
Master_UUID: 1b7181ee-6eaf-11e8-998e-080027de0e0e
Master_Info_File: mysql.slave_master_info
SQL_Delay:
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count:
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: 1b7181ee-6eaf-11e8-998e-080027de0e0e:-
Executed_Gtid_Set: 1b7181ee-6eaf-11e8-998e-080027de0e0e:- //The slave had skipped those GTID(which contained error 1146) of master and waited for newer GTID.The replica had been fixed up.
Auto_Position:
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
row in set (0.00 sec)
Summary
- The variable "gtid_purged" cannot be set if "gtid_executed" is not empty.
- Caution,"reset master" can only be used on slave.Keep in mind that don't do it on master anytime.
- This case can be followed only in test environment 'cause you cannot guarantee whether all the transactions are really replayed on slave.
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