MySQL错误日志是记录MySQL 运行过程中较为严重的警告和错误信息,以及MySQL每次启动和关闭的详细信息.错误日志的命名通常为hostname.err.其中,hostname表示服务器主机名. The error log contains information indicating when mysqld was started and stopped and also any critical errors that occur while the server is running.
备份 进行备份前需要先创建备份用户,直接使用 root 用户进行备份也行,但是这样不太规范. create user backup@'localhost' identified by '123456'; grant reload,process,lock tables,replication client on *.* to backup@localhost; 全备 备份整个库,使用的是备份用户,备份文件存放地址为 /backup/ innobackupex --defaults-file=/e