mysql RSA private key file not found

安装mysql报错

[Note] RSA private key file not found: /db/mysql5.6/data//private_key.pem. Some authentication plugins will not work.
[Note] RSA public key file not found: /db/mysql5.6/data//public_key.pem. Some authentication plugins will not work. 

解决方法如下：

1.检查是否安装openssl

$rpm -qa openssl

openssl-1.0.0-20.el6_2.5.x86_64 

2.利用openssl生成公有和私有key

$ openssl genrsa -out mykey.pem 1024 Generating RSA private key, 1024 bit long modulus
..........++++++
.++++++
e is 65537 (0x10001) 

$ openssl rsa -in mykey.pem -pubout -out mykey.pub writing RSA key 

3.修改key的权限

$ chmod 400 mykey.pem $ chmod 444 mykey.pub chown mysql:mysql mykey.pem chown mysql:mysql mykey.pub 

4.把公私有key的路径加入到my.cnf中

sha256_password_private_key_path=mykey.pem
sha256_password_public_key_path=mykey.pub 如果key放在datadir目录下，直接写key名即可。否则要指定key的全路径 

5.重启mysql

SHOW STATUS查看Rsa_public_key状态，如果不为空，则OK.

mysql> SHOW STATUS LIKE 'Rsa_public_key'\G *************************** 1. row *************************** Variable_name: Rsa_public_key  Value: -----BEGIN PUBLIC KEY----- MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDEALeNX9dY4EMlaDHCIYPBvFNN
NJG2f6dtsyV/IG94TFsKtx/Xobiiz9ihBZSWvUhlfz6aVy9TbN68YEn58G5oOS3o
sxKZQvDF9XvjN0thDPwCgfIwTZgatqmrV/qGewCxQpQ03WHPx+GXQmM9iFSfM84F
pZ8QtiI3m+fIUaOd/QIDAQAB
-----END PUBLIC KEY-----

1 row in set (0.00 sec)