mysql / mysqld_safe / mysqld 常见错误处理

1. FATAL ERROR: Could not find ./bin/my_print_defaults

[root@localhost scripts]# ./mysql_install_db  --user=mysql --datadir=/var/lib/mysql
FATAL ERROR: Could not find ./bin/my_print_defaults
 
If you compiled from source, you need to run 'make install' to
copy the software into the correct location ready for operation.
 
If you are using a binary release, you must either be at the top
level of the extracted archive, or pass the --basedir option
pointing to that location.

解决方法：

[root@localhost scripts]# ./mysql_install_db  --user=mysql --datadir=/var/lib/mysql --basedir=/usr/local/mysql

指定 --basedir

2. ERROR 1665 (HY000)

(root@localhost)[t]mysql>insert into t(i) values();
ERROR  (HY000): Cannot execute statement: impossible to write to binary log since BINLOG_FORMAT = STATEMENT 
and at least one table uses a storage engine limited to row-based logging. 
InnoDB is limited to row-logging when transaction isolation level is READ COMMITTED or READ UNCOMMITTED.

RC隔离级别时，binary log的格式只能使用 row based logging。不能使用 statement 格式的个binary log。

5.6.15-log 版本的还是可以的：RC隔离级别可以设置 binlog_format=statement;

但是在5.6.26-log 版本测试，RC隔离级别不能设置binlog_format=statement; 只能使用 binlog_format=row;

不知道具体从哪个版本开始不允许的。

3. mysqlbinlog 报错 ERROR: Error in Log_event::read_log_event(): 'Sanity check failed'：

[root@localhost ~]# mysqlbinlog /backup/xtrabackup/mysql-bin.000002 --start-position=482 > bin.sql
ERROR: Error in Log_event::read_log_event(): 'Sanity check failed', data_len: 65, event_type: 32
ERROR: Could not read entry at offset 592: Error in log format or read error.

mysqlbinlog 调用的版本错了，默认调用的是系统中libmyqlclient中的了，和最新版的binlog不兼容，解决办法指定mysqlbinlog目录：

[root@localhost ~]# /usr/local/mysql/bin/mysqlbinlog /backup/xtrabackup/mysql-bin.000002 --start-position=482 > bin.sql
[root@localhost ~]#

执行成功了。