MySql啟動報錯

Starting MySQL.. ERROR! The server quit without updating PID file (/var/lib/mysql..）

1，查看錯誤日誌

2017-08-10 19:38:14 31865 [Note] InnoDB: Initializing buffer pool, size = 50.0M

InnoDB: mmap(53657600 bytes) failed; errno 12

2017-08-10 19:38:14 31865 [ERROR] InnoDB: Cannot allocate memory for the buffer pool

2017-08-10 19:38:14 31865 [ERROR] Plugin ‘InnoDB‘ init function returned error.

2017-08-10 19:38:14 31865 [ERROR] Plugin ‘InnoDB‘ registration as a STORAGE ENGINE failed.

2017-08-10 19:38:14 31865 [ERROR] Unknown/unsupported storage engine: InnoDB

2017-08-10 19:38:14 31865 [ERROR] Aborting

2，查看空間使用量

free -ml

total used free shared buffers cached

Mem: 608476 565044 43432 0 1284 53996

-/+ buffers/cache: 509764 98712

Swap: 0 0 0

發現Swap 無可用空間(由於本人用的京東雲最低配1C1G1M)

3，增加Swap空間

dd if=/dev/zero of=/home/swap bs=1024 count=512000

/sbin/mkswap /home/swap

再接著使用這個swap分區。使其成為有效狀態。

/sbin/swapon /home/swap

4,重啟Mysql

service mysql restart

ps:my.cnf

本文出自 “藍色幽默” 博客，請務必保留此出處http://bluehumor.blog.51cto.com/2148378/1955247

MySql啟動報錯,無法更新PID文件