1. 查看系统里面有没有mysql 的repo

  yum repolist all | grep mysql

2. 如果没有发现,则需要配置repo

注意,如果要使用5.7 或者其他任何版本,只能有一个是 enabled=1的,其他的都得enabled=0

#vim /etc/yum.repos.d/mysql-community.repo
# Enable to use MySQL 5.6
[mysql56-community]
name=MySQL 5.6 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.6-community/el/6/

$basearch/
enabled=1
gpgcheck=1
gpgkey=

3. 再看看是否存在mysql的repo

# yum repolist enabled | grep mysql
mysql56-community        MySQL 5.6 Community Server               214

ok,说明已经有了,下面就可以安装mysql5.6了

4. 注意,

可能想当然的以为是

# yum install mysql56
//你只会得到
No package mysql56 available

实际上官方的安装命令是

# yum install mysql-community-server
//但是,失败了呢
mysql-community-server-5.6.28-2.el6.x86_64.rpm | 53 MB 00:10

warning: rpmts_HdrFromFdno: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
获取 GPG 密钥失败:[Errno 14] Could not open/read file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql

5.失败乃成功的妈妈

从错误提示看:需要验证 GnuPG 签名,还好可以手动,毛主席说,自己动手丰衣足食嘛。

当然,还有一招,我们暂且不用:

http://repo.mysql.com/yum/mysql-5.6-community/el/6/x86_64/mysql-community-server-5.6.28-2.el6.x86_64.rpm

我们接下来按照错误处理过出来搞,把签名先搞起来,参考地址: http://dev.mysql.com/doc/refman/5.6/en/checking-gpg-signature.html

# vim /etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
写入如下内容

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.4.9 (SunOS)

mQGiBD4+owwRBAC14GIfUfCyEDSIePvEW3SAFUdJBtoQHH/nJKZyQT7h9bPlUWC3
RODjQReyCITRrdwyrKUGku2FmeVGwn2u2WmDMNABLnpprWPkBdCk96+OmSLN9brZ
fw2vOUgCmYv2hW0hyDHuvYlQA/BThQoADgj8AW6/0Lo7V1W9/8VuHP0gQwCgvzV3
BqOxRznNCRCRxAuAuVztHRcEAJooQK1+iSiunZMYD1WufeXfshc57S/+yeJkegNW
hxwR9pRWVArNYJdDRT+rf2RUe3vpquKNQU/hnEIUHJRQqYHo8gTxvxXNQc7fJYLV
K2HtkrPbP72vwsEKMYhhr0eKCbtLGfls9krjJ6sBgACyP/Vb7hiPwxh6rDZ7ITnE
kYpXBACmWpP8NJTkamEnPCia2ZoOHODANwpUkP43I7jsDmgtobZX9qnrAXw+uNDI
QJEXM6FSbi0LLtZciNlYsafwAPEOMDKpMqAK6IyisNtPvaLd8lH0bPAnWqcyefep
rv0sxxqUEMcM3o7wwgfN83POkDasDbs3pjwPhxvhz6//62zQJ7Q2TXlTUUwgUmVs
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b20pIDxidWlsZEBteXNxbC5jb20+iG8EMBECAC8FAk53Pa0oHSBidWlsZEBteXNx
bC5jb20gd2lsbCBzdG9wIHdvcmtpbmcgc29vbgAKCRCMcY07UHLh9bU9AJ9xDK0o
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R6yUtAUJDTBYqAULBwoDBAMVAwIDFgIBAheAABIJEIxxjTtQcuH1B2VHUEcAAQGu
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ExECAAwFAj4+o9EFgwlmALsACgkQSVDhKrJykfIk4QCfWbEeKN+3TRspe+5xKj+k
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aSafanFvwFG6Llx9xkU7tzq+vKLoWkm4u5xf3vn55VjnSd1aQ9eQnUcXiL4cnBGo
TbOWI39EcyzgslzBdC++MPjcQTcA7p6JUVsP6oAB3FQWg54tuUo0Ec8bsM8b3Ev4
2LmuQT5NdKHGwHsXTPtl0klk4bQk4OajHsiy1BMahpT27jWjJlMiJc+IWJ0mghkK
Ht926s/ymfdf5HkdQ1cyvsz5tryVI3Fx78XeSYfQvuuwqp2H139pXGEkg0n6KdUO
etdZWhe70YGNPw1yjWJT1IhUBBgRAgAMBQJOdz3tBQkT+wG4ABIHZUdQRwABAQkQ
jHGNO1By4fUUmwCbBYr2+bBEn/L2BOcnw9Z/QFWuhRMAoKVgCFm5fadQ3Afi+UQl
AcOphrnJ
=443I
-----END PGP PUBLIC KEY BLOCK----- 

好的,似乎ok了。我们再来一次吧,嘿嘿

# yum install mysql-community-server

经过一系列Y/N的选择,进度条漂亮的到达了终点。

至此,MySQL 5.6 成功的从yum安装了呢 :-)

启动服务,开启新的旅程吧。

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