前言:
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有开发找到我,说数据库坏了,连不上数据库,看了下 MySQL 的错误日志,报错如下:
Error: Table './db_name/table_name' is marked as crashed and last (automatic?) repair failed修复
1、先停止 MySQL:service mysqld stop
2、进入到 MySQL 数据库的文件存放目录,比如 cd /data/mysql_data/xx_db
然后执行如下命令:
myisamchk --safe-recover -f -r *.MYI
执行完成后,为了保险起见,我们要将文件的权限改回 MySQL 的运行账号,比如 mysql:
chown -R mysql:mysql .
3、启动 MySQL:service mysqld start
4、最后,执行再次自动修复优化命令即可解决:
mysqlcheck --auto-repair --optimize --all-databases -p密码问题二 /usr/local/mysql/bin/mysqld does not exist or is not executable.
]# /data/wapage/hhzk/mserver/mysql5713/bin/mysqld_safe --defaults-file=/etc/my.cnf &[1] 24527]# 2020-11-23T10:36:45.803151Z mysqld_safe Logging to '/data/wapage/hhzk/mserver/mysql5713/data/qd01-tech2-rec-build001.ps.easou.com.err'.2020-11-23T10:36:45.809116Z mysqld_safe The file /usr/local/mysql/bin/mysqlddoes not exist or is not executable. Please cd to the mysql installationdirectory and restart this script from there as follows:./bin/mysqld_safe&See ;for more information[1]+ Exit 1 /data/wapage/hhzk/mserver/mysql5713/bin/mysqld_safe --defaults-file=/etc/my.cnf
说明:mysqld_safe启动脚本默认的从/usr/local/mysql目录中读取另外一个启动脚本mysqld,因为我的安装目录为/data/wapage/hhzk/mserver/mysql5713。所以找不到相关文件。可以从两个方面解决。
方法一:在/usr/local/mysql创建链接文件
mkdir -p /usr/local/mysql/binln -s /data/wapage/hhzk/mserver/mysql5713/bin/mysqld /usr/local/mysql/bin/mysqld
方法二:将mysqld_safe中的所有/usr/local/mysql目录改为自己实际的安装目录
sed -i 's#/usr/local/mysql#/data/wapage/hhzk/mserver/mysql5713#g' /data/wapage/hhzk/mserver/mysql5713/bin/mysqld_safe
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