linux环境下搭建MySQL
linux下搭建mysql的方式很多，网上也详解了很多种搭建方式，有直接yum的、有rpm的、、总之，“坑”是层出不穷，有相关文件依赖性、权限、GPG keys等等。
本人也在今天搭建了一下、是出“坑”了，所以来记录下。
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本次的搭建方式是使用rpm的方式进行搭建。
相关rpm包下载地址：https://pan.baidu.com/s/1ADAJ0p48_3fiOtijSd9QUQ 密码：z1zm（版本5.7）
第一步：将该包上传至服务器，进行解压：
tar -xvf mysql-5.7.16-1.el6.x86_64.rpm-bundle.tar
解压之后会出现若干rpm文件：
mysql-community-client-5.7.16-1.el6.x86_64.rpm
mysql-community-common-5.7.16-1.el6.x86_64.rpm
mysql-community-devel-5.7.16-1.el6.x86_64.rpm
mysql-community-embedded-5.7.16-1.el6.x86_64.rpm
mysql-community-embedded-devel-5.7.16-1.el6.x86_64.rpm
mysql-community-libs-5.7.16-1.el6.x86_64.rpm
mysql-community-libs-compat-5.7.16-1.el6.x86_64.rpm
mysql-community-server-5.7.16-1.el6.x86_64.rpm
mysql-community-test-5.7.16-1.el6.x86_64.rpm
第二步：使用rpm -ivh xxxxx命令进行安装（切记：顺序要保证同步、各个文件安装之间存在依赖性）
1、rpm -ivh mysql-community-common-5.7.16-1.el6.x86_64.rpm、出现如下内容：
warning: mysql-community-common-5.7.16-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY Preparing... ########################################### [100%] file /usr/share/mysql/czech/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/danish/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/dutch/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/english/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/estonian/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/french/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/german/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/greek/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/hungarian/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/italian/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/japanese/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/korean/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/norwegian-ny/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/norwegian/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/polish/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/portuguese/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/romanian/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/russian/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/serbian/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/slovak/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/spanish/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/swedish/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/ukrainian/errmsg.sys from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/Index.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/armscii8.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/ascii.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/cp1250.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/cp1256.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/cp1257.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/cp850.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/cp852.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/cp866.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/dec8.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/geostd8.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/greek.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/hebrew.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/hp8.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/keybcs2.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/koi8r.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/koi8u.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/latin1.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/latin2.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/latin5.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/latin7.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/macce.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/macroman.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64 file /usr/share/mysql/charsets/swe7.xml from install of mysql-community-common-5.7.16-1.el6.x86_64 conflicts with file from package mysql-libs-5.1.73-5.el6_6.x86_64
ok，第一行是有点端倪出来了，不过第一步安装算是完成。、
2、rpm -ivh mysql-community-libs-*.rpm
这一步、我就遇到坑了，先看下报错原因。
warning: mysql-community-libs-5.7.16-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY error: Failed dependencies: mysql-community-common(x86-64) >= 5.7.9 is needed by mysql-community-libs-5.7.16-1.el6.x86_64
警告行说的报错原因很明显：由于yum安装了旧版本的GPG keys造成的
还有文件依赖性的原因。（都是同一个版本因此确定版本不会错，只能是前者）
解决方案：命令后边加上 --force --nodeps 看下成功日志。
Preparing... ########################################### [100%] 1:mysql-community-libs ########################################### [ 50%] 2:mysql-community-libs-co########################################### [100%] You have mail in /var/spool/mail/root
3、rpm -ivh mysql-community-client-5.7.16-1.el6.x86_64.rpm
Preparing... ########################################### [100%] 1:mysql-community-client ########################################### [100%] [root@localhost mysql]# rpm -ivh mysql-community-server-5.7.16-1.el6.x86_64.rpm warning: mysql-community-server-5.7.16-1.el6.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY error: Failed dependencies: mysql-community-common(x86-64) = 5.7.16-1.el6 is needed by mysql-community-server-5.7.16-1.el6.x86_64
4、rpm -ivh mysql-community-server-5.7.16-1.el6.x86_64.rpm（这一步、也发生了第二步的原因，加上 --force --nodeps 即可，具体报错原因具体对待）
Preparing... ########################################### [100%] 1:mysql-community-server ^[^A###### ( 15########################################### [100%]
ok、到这一步，就完成linux下mysql的安装了（rpm方式）。
启动mysql服务：
service mysqld start
查询随机初始root密码：
cat /var/log/mysqld.log | grep "temporary password"
登录即可：
mysql -uroot -p
Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 4 Server version: 5.7.16 Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql>
环境坑、安装坑、包坑、各种坑，踩到了才是学到了。
