Notre configuration:
- Maître: MariaDB 10.0.21
- Esclave: MariaDB 10.0.17
La réplication fonctionnait très bien jusqu'à récemment, moment auquel les bases de données de l'esclave devaient être restaurées à partir d'un vidage. J'ai effectué toutes les étapes nécessaires: vider les DB du maître, transférer le vidage vers l'esclave, supprimer les anciens DB, exécuter le vidage pour restaurer les DB, exécuter la CHANGE MASTERcommande appropriée et enfin START SLAVE.
Je reçois l'erreur:
Got fatal error 1236 from master when reading data from binary log: 'Could not find first log file name in binary log index file'
Le premier fichier journal dont l'esclave a besoin du maître est mysql-bin.000289. Je peux voir que cela est présent sur le maître:
Je peux également voir que l'index de journal binaire sur le maître semble avoir une entrée pour ce fichier journal:
La réplication ne fonctionne toujours pas - je reçois toujours la même erreur. Je suis à court d'idées - que dois-je vérifier ensuite?
Mise à jour: sortie de SHOW SLAVE STATUS\Gcomme demandé:
MariaDB [(none)]> SHOW SLAVE STATUS\G
--------------
SHOW SLAVE STATUS
--------------
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 127.0.0.1
Master_User: replication
Master_Port: 1234
Connect_Retry: 60
Master_Log_File: mysql-bin.000289
Read_Master_Log_Pos: 342
Relay_Log_File: mysqld-relay-bin.000002
Relay_Log_Pos: 4
Relay_Master_Log_File: mysql-bin.000289
Slave_IO_Running: No
Slave_SQL_Running: Yes
Replicate_Do_DB: xxx_yyy,xxx_zzz
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: 342
Relay_Log_Space: 248
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: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 1236
Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'Could not find first log file name in binary log index file'
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 3
Master_SSL_Crl:
Master_SSL_Crlpath:
Using_Gtid: No
Gtid_IO_Pos:
1 row in set (0.00 sec)Informations supplémentaires demandées:
root@master [818 18:54:22 /var/lib/mysql]# ls -l /var/lib/mysql/mysql-bin.000289
-rw-rw---- 1 mysql mysql 1074010194 May 19 03:28 /var/lib/mysql/mysql-bin.000289
root@master [819 18:54:29 /var/lib/mysql]# ls mysql-bin.00029*
mysql-bin.000290 mysql-bin.000291 mysql-bin.000292 #(Yes, it was created)
root@master [821 18:56:52 /var/lib/mysql]# mysql -uroot -p
Enter password:
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 6345382
Server version: 10.0.21-MariaDB-log MariaDB Server
Copyright (c) 2000, 2015, Oracle, MariaDB Corporation Ab and others.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
MariaDB [(none)]> SHOW BINARY LOGS;
+------------------+------------+
| Log_name | File_size |
+------------------+------------+
| mysql-bin.000279 | 1074114047 |
| mysql-bin.000280 | 1074004090 |
| mysql-bin.000281 | 1074035416 |
| mysql-bin.000282 | 1073895128 |
| mysql-bin.000283 | 1073742000 |
| mysql-bin.000284 | 1074219591 |
| mysql-bin.000285 | 1074184547 |
| mysql-bin.000286 | 1074217812 |
| mysql-bin.000287 | 1022733058 |
| mysql-bin.000288 | 265069 |
| mysql-bin.000289 | 1074010194 |
| mysql-bin.000290 | 1074200346 |
| mysql-bin.000291 | 617421886 |
| mysql-bin.000292 | 265028 |
+------------------+------------+
14 rows in set (0.00 sec)
MariaDB [(none)]> exit
Bye
root@master [821 18:57:24 /var/lib/mysql]# mysqlbinlog mysql-bin.000289 > /tmp/somefile.txt
root@master [822 18:58:13 /var/lib/mysql]# tail /tmp/somefile.txt
# at 1074010124
#160519 3:28:59 server id 5 end_log_pos 1074010151 Xid = 417608063
COMMIT/*!*/;
# at 1074010151
#160519 3:28:59 server id 5 end_log_pos 1074010194 Rotate to mysql-bin.000290 pos: 4
DELIMITER ;
# End of log file
ROLLBACK /* added by mysqlbinlog */;
/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;
root@master [823 18:58:31 /var/lib/mysql]# /etc/my.cnf.d/server.cnf (extrait):
# BINARY LOGGING #
log-bin = /var/lib/mysql/mysql-bin
expire-logs-days = 14
sync-binlog = 1Edit: Postion 342 semble exister:
root@master [826 12:15:33 /var/lib/mysql]# grep "end_log_pos 342 " /tmp/somefile.txt
#160517 14:43:13 server id 5 end_log_pos 342 Binlog checkpoint mysql-bin.000288