首先使用宝塔官方数据库检测工具检查出错：
wget -O sql-repair.sh http://download.bt.cn/install/sql-repair.sh && sh sql-repair.sh
修改my.cnf配置：
[cient]
#password = your_password
port = 3306
socket = /tmp/mysql.sock
[mysqld]
port = 3306
socket = /tmp/mysql.sock
datadir = /www/server/data
default_storage_engine = MyISAM
#skip-external-locking
#loose-skip-innodb
key_buffer_size = 8M
max_allowed_packet = 1M
table_open_cache = 32
sort_buffer_size = 256K
net_buffer_length = 4K
read_buffer_size = 128K
read_rnd_buffer_size = 256K
myisam_sort_buffer_size = 4M
thread_cache_size = 4
query_cache_size = 4M
tmp_table_size = 8M
sql-mode=NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTIO
#skip-networking
#skip-name-resolve
max_connections = 500
max_connect_errors = 100
open_files_limit = 65535
#log-bin=mysql-bin
binlog_format=mixed
server-id = 1
expire_logs_days = 10
default_storage_engine = InnoDB
innodb_data_home_dir = /www/server/data
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = /www/server/data
innodb_buffer_pool_size = 16M
innodb_additional_mem_pool_size = 2M
innodb_log_file_size = 5M
innodb_log_buffer_size = 8M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
修改后执行以下代码生效：
/www/server/mysql/scripts/mysql_install_db --defaults-file=/www/server/mysql/my.cnf --basedir=/www/server/mysql --datadir=/www/server/data/ --user=mysql
以上方案主要用于解决宝塔面板出现mysql启动不了的问题。
注：
- 1.此修复工具只适用于没更改过mysql存储目录所使用
- 2.此修复工具会替换mysql配置文件（重命名为/etc/my.cnf.backup）
修复说明：
- 1.检测数据库配置文件是否存在或完整然后进行修复
- 2.检查mysql目录用户所属及权限
- 3.检查tmp目录权限
- 4.清理二进制日志（会备份至/www/server/data/logBackup）
- 5.释放内存确保能正常启用mysql
- 6.添加磁盘/mysql检测功能
若修复成功会提醒mysql正常运行
若修复失败会自动列出错误日志
若不懂如何解决可将错误日志贴出来发到论坛寻求帮助。
本文关键词：
宝塔 BT – MySQL 5.6 无法启动
Table 'mysql.plugin' doesn't exist
宝塔面板出现mysql启动不了问题