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在进行 mysql 相关的备份，会出现 1146 错误。
问题出现是因为 之前 把 mysql/data/ ibdata1 , ib_logfile0, ib_logfile1, ib_logfile2 文件 删除了，mysql重启之后会自动生成 这些文件的。但是之前的innodb引擎,就不能再 访问了。
特别注意一下： 删除ibdata1 文件的时候,必须要记得 这 5张innodb表。
所以需要重新创建 这些 系统表：
innodb_table_stats innodb_index_stats slave_master_info slave_relay_log_info slave_worker_info
处理该问题方法： 如果有主从同步的话，需要先 stop slave;
1、 删除上述系统表 drop table mysql.innodb_index_stats; drop table mysql.innodb_table_stats; drop table mysql.slave_master_info; drop table mysql.slave_relay_log_info; drop table mysql.slave_worker_info;
2. /mysql/data/mysql/ 删除相关的.frm .ibd文件 rm -rf innodb_index_stats* rm -rf innodb_table_stats* rm -rf slave_master_info* rm -rf slave_relay_log_info* rm -rf slave_worker_info*
3.重新创建上述系统表 CREATE TABLE `innodb_index_stats` ( `database_name` varchar(64) COLLATE utf8_bin NOT NULL, `table_name` varchar(64) COLLATE utf8_bin NOT NULL, `index_name` varchar(64) COLLATE utf8_bin NOT NULL, `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, `stat_name` varchar(64) COLLATE utf8_bin NOT NULL, `stat_value` bigint(20) unsigned NOT NULL, `sample_size` bigint(20) unsigned DEFAULT NULL, `stat_description` varchar(1024) COLLATE utf8_bin NOT NULL, PRIMARY KEY (`database_name`,`table_name`,`index_name`,`stat_name`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin STATS_PERSISTENT=0;
CREATE TABLE `innodb_table_stats` ( `database_name` varchar(64) COLLATE utf8_bin NOT NULL, `table_name` varchar(64) COLLATE utf8_bin NOT NULL, `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, `n_rows` bigint(20) unsigned NOT NULL, `clustered_index_size` bigint(20) unsigned NOT NULL, `sum_of_other_index_sizes` bigint(20) unsigned NOT NULL, PRIMARY KEY (`database_name`,`table_name`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin STATS_PERSISTENT=0;
CREATE TABLE `slave_master_info` ( `Number_of_lines` int(10) unsigned NOT NULL COMMENT ‘Number of lines in the file.’, `Master_log_name` text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT ‘The name of the master binary log currently being read from the master.’, `Master_log_pos` bigint(20) unsigned NOT NULL COMMENT ‘The master log position of the last read event.’, `Host` char(64) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL DEFAULT ” COMMENT ‘The host name of the master.’, `User_name` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The user name used to connect to the master.’, `User_password` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The password used to connect to the master.’, `Port` int(10) unsigned NOT NULL COMMENT ‘The network port used to connect to the master.’, `Connect_retry` int(10) unsigned NOT NULL COMMENT ‘The period (in seconds) that the slave will wait before trying to reconnect to the master.’, `Enabled_ssl` tinyint(1) NOT NULL COMMENT ‘Indicates whether the server supports SSL connections.’, `Ssl_ca` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The file used for the Certificate Authority (CA) certificate.’, `Ssl_capath` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The path to the Certificate Authority (CA) certificates.’, `Ssl_cert` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The name of the SSL certificate file.’, `Ssl_cipher` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The name of the cipher in use for the SSL connection.’, `Ssl_key` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The name of the SSL key file.’, `Ssl_verify_server_cert` tinyint(1) NOT NULL COMMENT ‘Whether to verify the server certificate.’, `Heartbeat` float NOT NULL, `Bind` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘Displays which interface is employed when connecting to the MySQL server’, `Ignored_server_ids` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The number of server IDs to be ignored, followed by the actual server IDs’, `Uuid` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The master server uuid.’, `Retry_count` bigint(20) unsigned NOT NULL COMMENT ‘Number of reconnect attempts, to the master, before giving up.’, `Ssl_crl` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The file used for the Certificate Revocation List (CRL)’, `Ssl_crlpath` text CHARACTER SET utf8 COLLATE utf8_bin COMMENT ‘The path used for Certificate Revocation List (CRL) files’, `Enabled_auto_position` tinyint(1) NOT NULL COMMENT ‘Indicates whether GTIDs will be used to retrieve events from the master.’, PRIMARY KEY (`Host`,`Port`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 STATS_PERSISTENT=0 COMMENT=’Master Information’;
CREATE TABLE `slave_relay_log_info` ( `Number_of_lines` int(10) unsigned NOT NULL COMMENT ‘Number of lines in the file or rows in the table. Used to version table definitions.’, `Relay_log_name` text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT ‘The name of the current relay log file.’, `Relay_log_pos` bigint(20) unsigned NOT NULL COMMENT ‘The relay log position of the last executed event.’, `Master_log_name` text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT ‘The name of the master binary log file from which the events in the relay log file were read.’, `Master_log_pos` bigint(20) unsigned NOT NULL COMMENT ‘The master log position of the last executed event.’, `Sql_delay` int(11) NOT NULL COMMENT ‘The number of seconds that the slave must lag behind the master.’, `Number_of_workers` int(10) unsigned NOT NULL, `Id` int(10) unsigned NOT NULL COMMENT ‘Internal Id that uniquely identifies this record.’, PRIMARY KEY (`Id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 STATS_PERSISTENT=0 COMMENT=’Relay Log Information’; CREATE TABLE `slave_worker_info` ( `Id` int(10) unsigned NOT NULL, `Relay_log_name` text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL, `Relay_log_pos` bigint(20) unsigned NOT NULL, `Master_log_name` text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL, `Master_log_pos` bigint(20) unsigned NOT NULL, `Checkpoint_relay_log_name` text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL, `Checkpoint_relay_log_pos` bigint(20) unsigned NOT NULL, `Checkpoint_master_log_name` text CHARACTER SET utf8 COLLATE utf8_bin NOT NULL, `Checkpoint_master_log_pos` bigint(20) unsigned NOT NULL, `Checkpoint_seqno` int(10) unsigned NOT NULL, `Checkpoint_group_size` int(10) unsigned NOT NULL, `Checkpoint_group_bitmap` blob NOT NULL, PRIMARY KEY (`Id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 STATS_PERSISTENT=0 COMMENT=’Worker Information’;
5、重启数据库
6、如果Slave启动报错,则使用步骤4的信息,重新change master
参考： https://www.linuxidc.com/Linux/2015-05/117521.htm
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