1.启动mysql时一直不成功,查看错误日志 /var/log/mysql/error.log
2.主要的错误信息有如下几条:
1 2 3 4 5 6 7 | [error] innodb: mmap(136151040 bytes) failed; errno 12 [error] innodb: cannot allocate memory for the buffer pool [error] innodb: plugin initialization aborted with error generic error [error] plugin 'innodb' init function returned error. [error] plugin 'innodb' registration as a storage engine failed. [error] failed to initialize plugins. [error] aborting |
3.查询后是因为内存不足,查看内存
增加swap交换空间解决问题:
1 2 3 | dd if=/dev/zero of =/swapfile bs=1m count =1024 mkswap /swapfile swapon /swapfile |
4.增加自动挂载:
在文件/etc/fstab中加入 /swapfile swap swap defaults 0 0
service mysql start 启动成功
5. 备注:
生成空文件
1 2 3 4 5 | dd if=/dev/zero of =1.txt bs=1m count =2 生成一个指定大小的空文件 if=文件名:输入文件名 of =文件名:输出文件名 bs=字节大小 count =个数 |
总结:
大神勿喷,