MySQL 版本 5.6.14

公司有幾臺MySQL伺服器的錯誤日誌顯示,有幾個系統表不存在.
innodb_table_stats
innodb_index_stats
slave_master_info
slave_relay_log_info
slave_worker_info

這是因為資料庫初始化的時候,dba可能刪除過ibdata1檔案
雖然重啟之後,資料庫會自動建立一個ibdata1檔案,但是上述系統表也是innodb引擎,所以不能訪問了.
這雖然不會影響業務,但是使用innobackupex備份的時候,會寫入錯誤日誌.
最後錯誤日誌裡,都是這種資訊.影響日常檢查。

解決的方法.
1.刪除上述系統表
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.刪除相關的.frm .ibd檔案
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.重新建立上述系統表
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';

4.如果是Slave備機,停止複製,記錄pos等資訊
mysql> stop slave;
Query OK, 0 rows affected (0.09 sec)

5.重啟資料庫

6.如果Slave啟動報錯,則使用步驟4的資訊,重新change master

再刪除ibdata1檔案的時候,一定要想起系統資料庫還有5張innodb表...

參考:

MySQL innodb_table_stats表不存在的解決方法

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