mysql启动过程中报错_MySQL
今天给阿里云的机器安装mysql，安装完成后，启动的时候报错The server quit without updating PID file (/data/mysql/AY140710163143738066Z.pid).
mysql的配置我用的是默认配置，没有新添加错误，查看了下错误日志：
2014-07-11 10:14:25 2267 [ERROR] InnoDB: Cannot allocate memory for the buffer pool
2014-07-11 10:14:25 2267 [ERROR] Plugin 'InnoDB' init function returned error.
2014-07-11 10:14:25 2267 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
2014-07-11 10:14:25 2267 [ERROR] Unknown/unsupported storage engine: InnoDB
2014-07-11 10:14:25 2267 [ERROR] Aborting
大体意思应该是内存不够，因为的申请的机器的内存是512M，所以修改了下配置文件，添加入下内容
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
重新初始化数据库，启动正常了。
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