mysql在启动时报错"Failed to open log xxxxxx/mysql-bin.000003 not found,errno 2"

问题描述：mysql在启动时报错"Failed to open log xxxxxx/mysql-bin.000003 not found,errno 2"，如下所示：
数据库：mysql 5.5.18
系统：rhel 6.5 64位
架构：一主一从
场景描述：主库最新binlog文件被手动删除后，重启数据库报错.
1、异常重现
230820 14:52:19 InnoDB: 1.1.8 started; log sequence number 1604156
/usr/local/webserver/mysql/bin/mysqld: File '/var/mysql/binlog/mysql-bin.000003' not found (Errcode: 2)
230820 14:52:19 [ERROR] Failed to open log (file '/var/mysql/binlog/mysql-bin.000003', errno 2)
230820 14:52:19 [ERROR] Could not open log file
230820 14:52:19 [ERROR] Can't init tc log
230820 14:52:19 [ERROR] Aborting

230820 14:52:19  InnoDB: Starting shutdown...
230820 14:52:19  InnoDB: Shutdown completed; log sequence number 1604156
230820 14:52:19 [Note] /usr/local/webserver/mysql/bin/mysqld: Shutdown complete

230820 14:52:19 mysqld_safe mysqld from pid file /var/mysql/data/MySQL5518-Master.pid ended

2、解决过程
2.1、重建mysql-bin.000003
[mysql@MySQL5518-Master ~]$ touch /var/mysql/binlog/mysql-bin.000003
[mysql@MySQL5518-Master ~]$ logout
[root@MySQL5518-Master ~]# service mysqld start
Starting MySQL..The server quit without updating PID file ([FAILED]ql/data/MySQL5518-Master.pid).

日志文件：
230820 15:03:53 mysqld_safe Starting mysqld daemon with databases from /var/mysql/data
230820 15:03:53 InnoDB: The InnoDB memory heap is disabled
230820 15:03:53 InnoDB: Mutexes and rw_locks use GCC atomic builtins
230820 15:03:53 InnoDB: Compressed tables use zlib 1.2.3
230820 15:03:53 InnoDB: Initializing buffer pool, size = 1.0G
230820 15:03:53 InnoDB: Completed initialization of buffer pool
230820 15:03:53 InnoDB: highest supported file format is Barracuda.
230820 15:03:54  InnoDB: Waiting for the background threads to start
230820 15:03:55 InnoDB: 1.1.8 started; log sequence number 1604156
230820 15:03:55 [ERROR] I/O error reading the header from the binary log, errno=175, io cache code=0
230820 15:03:55 [ERROR] I/O error reading the header from the binary log
230820 15:03:55 [ERROR] Can't init tc log
230820 15:03:55 [ERROR] Aborting

230820 15:03:55  InnoDB: Starting shutdown...
230820 15:03:55  InnoDB: Shutdown completed; log sequence number 1604156
230820 15:03:55 [Note] /usr/local/webserver/mysql/bin/mysqld: Shutdown complete

230820 15:03:55 mysqld_safe mysqld from pid file /var/mysql/data/MySQL5518-Master.pid ended

说明：如上所示，创建同名日志文件后开启mysql进程失败，因为mysql知道文件已不是原有的日志文件.

2.2、删除index中的记录信息
[mysql@MySQL5518-Master ~]$ cd /var/mysql/binlog
[mysql@MySQL5518-Master binlog]$ ll
total 12
-rw-rw----. 1 mysql mysql 1404 Aug 20 13:37 mysql-bin.000001
-rw-rw----. 1 mysql mysql  126 Aug 20 13:40 mysql-bin.000002
-rw-rw-r--. 1 mysql mysql    0 Aug 20 15:03 mysql-bin.000003
-rw-rw----. 1 mysql mysql  105 Aug 20 13:40 mysql-bin.index
[mysql@MySQL5518-Master binlog]$ vi mysql-bin.index
说明：删除mysql-bin.000003条目.
/var/mysql/binlog/mysql-bin.000001
/var/mysql/binlog/mysql-bin.000002
/var/mysql/binlog/mysql-bin.000003

[mysql@MySQL5518-Master binlog]$ cat mysql-bin.index
/var/mysql/binlog/mysql-bin.000001
/var/mysql/binlog/mysql-bin.000002

--系统层面删除mysql-bin.000003
[mysql@MySQL5518-Master binlog]$ ll
total 12
-rw-rw----. 1 mysql mysql 1404 Aug 20 13:37 mysql-bin.000001
-rw-rw----. 1 mysql mysql  126 Aug 20 13:40 mysql-bin.000002
-rw-rw-r--. 1 mysql mysql    0 Aug 20 15:03 mysql-bin.000003
-rw-rw----. 1 mysql mysql   70 Aug 20 15:09 mysql-bin.index
[mysql@MySQL5518-Master binlog]$ rm mysql-bin.000003
[mysql@MySQL5518-Master binlog]$ logout

2.3、重启数据库
[root@MySQL5518-Master ~]# service mysqld start
Starting MySQL..                                           [  OK  ]

告警日志：
230820 15:10:25 mysqld_safe Starting mysqld daemon with databases from /var/mysql/data
230820 15:10:25 InnoDB: The InnoDB memory heap is disabled
230820 15:10:25 InnoDB: Mutexes and rw_locks use GCC atomic builtins
230820 15:10:25 InnoDB: Compressed tables use zlib 1.2.3
230820 15:10:25 InnoDB: Initializing buffer pool, size = 1.0G
230820 15:10:26 InnoDB: Completed initialization of buffer pool
230820 15:10:26 InnoDB: highest supported file format is Barracuda.
230820 15:10:26  InnoDB: Waiting for the background threads to start
230820 15:10:27 InnoDB: 1.1.8 started; log sequence number 1604156
230820 15:10:27 [Note] Event Scheduler: Loaded 0 events
230820 15:10:27 [Note] /usr/local/webserver/mysql/bin/mysqld: ready for connections.
Version: '5.5.18-log'  socket: '/tmp/mysql.sock'  port: 3306  Source distribution

说明：如上所示，修改完mysql-bin.index后，mysql成功被开启.

3、数据验证
root@MySQL5518-Master [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| booksDB            |
| fruitsDB           |
| mysql              |
| performance_schema |
| test               |
+--------------------+
6 rows in set (0.00 sec)

root@MySQL5518-Master [(none)]> use booksDB;
Database changed
root@MySQL5518-Master [booksDB]> show tables;
+-------------------+
| Tables_in_booksDB |
+-------------------+
| authorbook        |
| authors           |
| books             |
+-------------------+
3 rows in set (0.00 sec)

root@MySQL5518-Master [booksDB]> select * from authorbook;
+---------+-------+
| auth_id | bk_id |
+---------+-------+
|    1001 | 11033 |
|    1002 | 11035 |
|    1003 | 11072 |
|    1004 | 11028 |
|    1011 | 11078 |
|    1012 | 11026 |
|    1012 | 11041 |
|    1014 | 11069 |
+---------+-------+
8 rows in set (0.00 sec)

说明：最新update的数据在启动数据库后依然存在.

参考网址：
https://blog.csdn.net/weixin_30200131/article/details/113328482
https://www.yzktw.com.cn/post/861139.html