MySQL测试环境遇到 mmap(xxx bytes) failed; errno 12解决方法

Posted 2020-08-05 losbyday

查看mysql日志

InnoDB: Initializing buffer pool, size = 128.0M
InnoDB: mmap(137363456 bytes) failed; errno 12
InnoDB: Completed initialization of buffer pool
InnoDB: Fatal error: cannot allocate memory for the buffer pool
[ERROR] Plugin \'InnoDB\' init function returned error.
[ERROR] Plugin \'InnoDB\' registration as a STORAGE ENGINE failed.
[ERROR] Unknown/unsupported storage engine: InnoDB
[ERROR] Aborting

 

缓存太少了

[root@dep5 ~]# free -m
             total       used       free     shared    buffers     cached
Mem:          1152        464        687          0          8         92
-/+ buffers/cache:        363        789
Swap:          199        194          5

增加缓存

$  dd if=/dev/zero of=/swapfile bs=1M count=1024 #增加1G的SWAP进去
$  mkswap /swapfile
$  swapon /swapfile
$ free
             total       used       free     shared    buffers     cached
Mem:        608476     601432       7044          0        824      88752
-/+ buffers/cache:     511856      96620
Swap:      1048572          0    1048572

此处不建议将swapon 写到/etc/fstab这里,直接写到/etc.rc.local中更为稳妥

启动解决...

出自：http://www.cnblogs.com/olinux/p/5144205.html