今天在RED HAT 9上面安装了MYSQL，但是在service mysql start以后，查看service mysql status的时候出现以下提示：
mysqld 已死，但是 subsys 被锁
我起初还看了日志文件，日志文件提示：
Cannot initialize InnoDB as 'innodb_data_file_path' is not set. If you do not want to use transactional InnoDB tables, add a line skip-innodb to the [mysqld] section of init parameters in your my.cnf or my.ini. If you want to use InnoDB tables, add to the [mysqld] section, for example, innodb_data_file_path = ibdata1:10M:autoextend But to get good performance you should adjust for your hardware the InnoDB startup options listed in section 2 at 060806 12:51:01 /usr/libexec/mysqld: Incorrect information in file: './mysql/host.frm' 060806 12:51:01 mysqld ended
我把原版的英文发给大家看看：
1. Obviously the 'ole check the log file for anything nasty
cat /var/log/mysqld.log
2. Stop the service
service mysqld stop
3. Check to see if the service stopped, it might be calling the wrong pid.
ps aux | grep mysql
4. Kill any mysql process that might still be running.
kill -9 ??? ???
5. (*CAREFUL*) Remove/move/backup any databases from the data directory, only do this step if you need to.
rm -Rf /var/lib/mysql/*
6. Check your global options configuration file, should be similar to stevanbt's initial post.
cat /etc/my.cnf
7. Copy over one of the preconfigured 'sample' server-specific options file. Global (/etc/my.cnf) file has priority over server-specific file, but these have more options in them and have been tuned for a certain role.
