Centos 下 mysql 安装过程

1. 检查系统自带的mysql，并卸载自带的版本

 

 

[root@iz2366ycl7sz config]# yum list installed |grep mysql
mysql.x86_64            5.1.73-5.el6_6  @base                                   
mysql-libs.x86_64       5.1.73-5.el6_6  @base                                   
php56w-mysql.x86_64     5.6.40-1.w6     @webtatic     

 

 

 

2. 卸载系统自带的mysql及其依赖 

 

[root@iz2366ycl7sz config]# yum -y remove mysql-libs.x86_64
loaded plugins: security
setting up remove process
resolving dependencies
--> running transaction check
---> package mysql-libs.x86_64 0:5.1.73-5.el6_6 will be erased
--> processing dependency: libmysqlclient.so.16()(64bit) for package: php56w-mysql-5.6.40-1.w6.x86_64
--> processing dependency: libmysqlclient.so.16()(64bit) for package: 2:postfix-2.6.6-6.el6_5.x86_64
--> processing dependency: libmysqlclient.so.16()(64bit) for package: mysql-5.1.73-5.el6_6.x86_64
--> processing dependency: libmysqlclient.so.16(libmysqlclient_16)(64bit) for package: php56w-mysql-5.6.40-1.w6.x86_64
--> processing dependency: libmysqlclient.so.16(libmysqlclient_16)(64bit) for package: 2:postfix-2.6.6-6.el6_5.x86_64
--> processing dependency: libmysqlclient.so.16(libmysqlclient_16)(64bit) for package: mysql-5.1.73-5.el6_6.x86_64
--> processing dependency: libmysqlclient_r.so.16()(64bit) for package: php56w-mysql-5.6.40-1.w6.x86_64
--> processing dependency: libmysqlclient_r.so.16()(64bit) for package: mysql-5.1.73-5.el6_6.x86_64
--> processing dependency: libmysqlclient_r.so.16(libmysqlclient_16)(64bit) for package: php56w-mysql-5.6.40-1.w6.x86_64
--> processing dependency: libmysqlclient_r.so.16(libmysqlclient_16)(64bit) for package: mysql-5.1.73-5.el6_6.x86_64
--> processing dependency: mysql-libs for package: 2:postfix-2.6.6-6.el6_5.x86_64
--> processing dependency: mysql-libs = 5.1.73-5.el6_6 for package: mysql-5.1.73-5.el6_6.x86_64
--> running transaction check
---> package mysql.x86_64 0:5.1.73-5.el6_6 will be erased
---> package php56w-mysql.x86_64 0:5.6.40-1.w6 will be erased
---> package postfix.x86_64 2:2.6.6-6.el6_5 will be erased
--> finished dependency resolution

dependencies resolved

========================================================================================================================================
 package                          arch                       version                                repository                     size
========================================================================================================================================
removing:
 mysql-libs                       x86_64                     5.1.73-5.el6_6                         @base                         4.0 m
removing for dependencies:
 mysql                            x86_64                     5.1.73-5.el6_6                         @base                         2.4 m
 php56w-mysql                     x86_64                     5.6.40-1.w6                            @webtatic                     457 k
 postfix                          x86_64                     2:2.6.6-6.el6_5                        @updates                      9.7 m

transaction summary
========================================================================================================================================
remove        4 package(s)

installed size: 17 m
downloading packages:
running rpm_check_debug
running transaction test
transaction test succeeded
running transaction
  erasing    : php56w-mysql-5.6.40-1.w6.x86_64                                                                                      1/4 
  erasing    : 2:postfix-2.6.6-6.el6_5.x86_64                                                                                       2/4 
  erasing    : mysql-5.1.73-5.el6_6.x86_64                                                                                          3/4 
  erasing    : mysql-libs-5.1.73-5.el6_6.x86_64                                                                                     4/4 
  verifying  : mysql-libs-5.1.73-5.el6_6.x86_64                                                                                     1/4 
  verifying  : php56w-mysql-5.6.40-1.w6.x86_64                                                                                      2/4 
  verifying  : mysql-5.1.73-5.el6_6.x86_64                                                                                          3/4 
  verifying  : 2:postfix-2.6.6-6.el6_5.x86_64                                                                                       4/4 

removed:
  mysql-libs.x86_64 0:5.1.73-5.el6_6                                                                                                    

dependency removed:
  mysql.x86_64 0:5.1.73-5.el6_6              php56w-mysql.x86_64 0:5.6.40-1.w6              postfix.x86_64 2:2.6.6-6.el6_5             

complete!

 

3. 给centos添加rpm源，并且选择较新的源

 

1）下载rpm包

 

[root@iz2366ycl7sz software]# wget dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm --no-check-certificate
--2019-03-29 14:45:46--  http://dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm
resolving dev.mysql.com... 137.254.60.11
connecting to dev.mysql.com|137.254.60.11|:80... connected.
http request sent, awaiting response... 301 moved permanently
location: https://dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm [following]
--2019-03-29 14:45:46--  https://dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm
connecting to dev.mysql.com|137.254.60.11|:443... connected.
http request sent, awaiting response... 302 found
location: https://repo.mysql.com//mysql-community-release-el6-5.noarch.rpm [following]
--2019-03-29 14:45:48--  https://repo.mysql.com//mysql-community-release-el6-5.noarch.rpm
resolving repo.mysql.com... 104.127.195.16
connecting to repo.mysql.com|104.127.195.16|:443... connected.
http request sent, awaiting response... 200 ok
length: 5824 (5.7k) [application/x-redhat-package-manager]
saving to: “mysql-community-release-el6-5.noarch.rpm”

100%[==============================================================================================>] 5,824       --.-k/s   in 0s      

2019-03-29 14:45:48 (506 mb/s) - “mysql-community-release-el6-5.noarch.rpm” saved [5824/5824]

 

2）安装本地mysql源

 

[root@iz2366ycl7sz software]# yum localinstall mysql-community-release-el6-5.noarch.rpm
loaded plugins: security
setting up local package process
examining mysql-community-release-el6-5.noarch.rpm: mysql-community-release-el6-5.noarch
marking mysql-community-release-el6-5.noarch.rpm to be installed
resolving dependencies
--> running transaction check
---> package mysql-community-release.noarch 0:el6-5 will be installed
--> finished dependency resolution

dependencies resolved

========================================================================================================================================
 package                              arch                version              repository                                          size
========================================================================================================================================
installing:
 mysql-community-release              noarch              el6-5                /mysql-community-release-el6-5.noarch              4.3 k

transaction summary
========================================================================================================================================
install       1 package(s)

total size: 4.3 k
installed size: 4.3 k
is this ok [y/n]: y
is this ok [y/n]: y
downloading packages:
running rpm_check_debug
running transaction test
transaction test succeeded
running transaction
  installing : mysql-community-release-el6-5.noarch                                                                                 1/1 
  verifying  : mysql-community-release-el6-5.noarch                                                                                 1/1 

installed:
  mysql-community-release.noarch 0:el6-5                                                                                                

complete!

 

3）验证是否安装成功

 

[root@iz2366ycl7sz software]# yum repolist all | grep mysql
mysql-connectors-community        mysql connectors community     enabled:     83
mysql-connectors-community-source mysql connectors community - s disabled
mysql-tools-community             mysql tools community          enabled:     74
mysql-tools-community-source      mysql tools community - source disabled
mysql55-community                 mysql 5.5 community server     disabled
mysql55-community-source          mysql 5.5 community server - s disabled
mysql56-community                 mysql 5.6 community server     enabled:    493
mysql56-community-source          mysql 5.6 community server - s disabled
mysql57-community-dmr             mysql 5.7 community server dev disabled
mysql57-community-dmr-source      mysql 5.7 community server dev disabled

 

4）修改默认版本为5.7

 

 

注：如下是截取的老徐之前文章 -》原文 

 

如上，默认是5.6版本可用，如果想安装5.7怎么操作？

有如下两个方法：

 

方法一：

执行：

yum-config-manager --disable mysql56-community

yum-config-manager --enable mysql57-community-dmr

 

如上操作，是把5.6禁用，把5.7启用

此法，会有异常情况：

如果执行命令出现如下错误：

-bash: yum-config-manager: command not found

可用执行如下命令解决，然后继续上面的操作命令：

yum -y install yum-utils

 

注意：如上操作可能有一部分同学的会出现一些问题；好处是操作简单，两个命令搞定～

如果有问题，底部给老徐留言～

 

 

方法二：

直接编辑配置文件，简单、直接，基本不会出现错误～

vi /etc/yum.repos.d/mysql-community.repo 

把5.6的enabled=0

把5.7的enabled=1

然后保存就ok

 

# enable to use mysql 5.5

[mysql55-community]

name=mysql 5.5 community server

baseurl=http://repo.mysql.com/yum/mysql-5.5-community/el/6/$basearch/

enabled=0

gpgcheck=1

gpgkey=file:/etc/pki/rpm-gpg/rpm-gpg-key-mysql

 

# 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=0

gpgcheck=1

gpgkey=file:/etc/pki/rpm-gpg/rpm-gpg-key-mysql

 

# note: mysql 5.7 is currently in development. for use at your own risk.

# please read with sub pages: https://dev.mysql.com/doc/relnotes/mysql/5.7/en/

[mysql57-community-dmr]

name=mysql 5.7 community server development milestone release

baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/6/$basearch/

enabled=1

gpgcheck=1

gpgkey=file:/etc/pki/rpm-gpg/rpm-gpg-key-mysql

如上，颜色标记处 。

此时，再执行：

yum repolist all | grep mysql

就可以看到，5.7是启用的

 

 

[root@localhost webserver]# yum repolist all | grep mysql

mysql-connectors-community        mysql connectors community         启用:    21

mysql-connectors-community-source mysql connectors community - sourc 禁用

mysql-tools-community             mysql tools community              启用:    38

mysql-tools-community-source      mysql tools community - source     禁用

mysql55-community                 mysql 5.5 community server         禁用

mysql55-community-source          mysql 5.5 community server - sourc 禁用

mysql56-community                 mysql 5.6 community server         禁用

mysql56-community-source          mysql 5.6 community server - sourc 禁用

mysql57-community-dmr             mysql 5.7 community server develop 启用:   130

mysql57-community-dmr-source      mysql 5.7 community server develop 禁用

如上 。

ok，至此，基础准备工作完成 。

 

 

 

4. 安装mysql

执行如下命令：

yum install mysql-community-server

 

[root@iz2366ycl7sz software]# yum install mysql-community-server
loaded plugins: security
setting up install process
resolving dependencies
--> running transaction check
---> package mysql-community-server.x86_64 0:5.7.25-1.el6 will be installed
--> processing dependency: mysql-community-common(x86-64) = 5.7.25-1.el6 for package: mysql-community-server-5.7.25-1.el6.x86_64
--> processing dependency: mysql-community-client(x86-64) >= 5.7.9 for package: mysql-community-server-5.7.25-1.el6.x86_64
--> running transaction check
---> package mysql-community-client.x86_64 0:5.7.25-1.el6 will be installed
--> processing dependency: mysql-community-libs(x86-64) >= 5.7.9 for package: mysql-community-client-5.7.25-1.el6.x86_64
---> package mysql-community-common.x86_64 0:5.7.25-1.el6 will be installed
--> running transaction check
---> package mysql-community-libs.x86_64 0:5.7.25-1.el6 will be installed
--> finished dependency resolution

dependencies resolved

========================================================================================================================================
 package                                arch                   version                      repository                             size
========================================================================================================================================
installing:
 mysql-community-server                 x86_64                 5.7.25-1.el6                 mysql57-community-dmr                 153 m
installing for dependencies:
 mysql-community-client                 x86_64                 5.7.25-1.el6                 mysql57-community-dmr                  23 m
 mysql-community-common                 x86_64                 5.7.25-1.el6                 mysql57-community-dmr                 332 k
 mysql-community-libs                   x86_64                 5.7.25-1.el6                 mysql57-community-dmr                 2.1 m

transaction summary
========================================================================================================================================
install       4 package(s)

total download size: 178 m
installed size: 887 m
is this ok [y/n]: y
downloading packages:
(1/4): mysql-community-client-5.7.25-1.el6.x86_64.rpm                                                            |  23 mb     00:01     
(2/4): mysql-community-common-5.7.25-1.el6.x86_64.rpm                                                            | 332 kb     00:00     
(3/4): mysql-community-libs-5.7.25-1.el6.x86_64.rpm                                                              | 2.1 mb     00:00     
(4/4): mysql-community-server-5.7.25-1.el6.x86_64.rpm                                                            | 153 mb     00:04     
----------------------------------------------------------------------------------------------------------------------------------------
total                                                                                                    32 mb/s | 178 mb     00:05     
warning: rpmts_hdrfromfdno: header v3 dsa/sha1 signature, key id 5072e1f5: nokey
retrieving key from file:/etc/pki/rpm-gpg/rpm-gpg-key-mysql
importing gpg key 0x5072e1f5:
 userid : mysql release engineering <[e-mail]>
 package: mysql-community-release-el6-5.noarch (@/mysql-community-release-el6-5.noarch)
 from   : file:/etc/pki/rpm-gpg/rpm-gpg-key-mysql
is this ok [y/n]: y
running rpm_check_debug
running transaction test
transaction test succeeded
running transaction
  installing : mysql-community-common-5.7.25-1.el6.x86_64                                                                           1/4 
  installing : mysql-community-libs-5.7.25-1.el6.x86_64                                                                             2/4 
  installing : mysql-community-client-5.7.25-1.el6.x86_64                                                                           3/4 
  installing : mysql-community-server-5.7.25-1.el6.x86_64                                                                           4/4 
  verifying  : mysql-community-libs-5.7.25-1.el6.x86_64                                                                             1/4 
  verifying  : mysql-community-common-5.7.25-1.el6.x86_64                                                                           2/4 
  verifying  : mysql-community-client-5.7.25-1.el6.x86_64                                                                           3/4 
  verifying  : mysql-community-server-5.7.25-1.el6.x86_64                                                                           4/4 

installed:
  mysql-community-server.x86_64 0:5.7.25-1.el6                                                                                          

dependency installed:
  mysql-community-client.x86_64 0:5.7.25-1.el6 mysql-community-common.x86_64 0:5.7.25-1.el6 mysql-community-libs.x86_64 0:5.7.25-1.el6

complete!

 

 

5. 启动mysql

 

 

[root@iz2366ycl7sz software]# service mysqld start
initializing mysql database:                               [  ok  ]
starting mysqld:                                           [  ok  ]

 

6. 查看mysql服务状态

 

 

[root@iz2366ycl7sz software]# service mysqld status
mysqld (pid  7036) is running...

 

7. 查看mysql 初始密码

mysql5.7之后初始密码不再默认为空

 

[root@iz2366ycl7sz software]# grep 'temporary password' /var/log/mysqld.log 
2019-03-29t07:09:36.375706z 1 [note] a temporary password is generated for root@localhost: xo%lbtyoo2mv

其中，最后的xo%lbtyoo2mv 就是密码

 

 

8. 命令行登录mysql ，并修改密码

 

登录之后 第一步必须先修改密码，

否则其他操作都执行不了。

mysql -u root -p

 

mysql> show databases;
error 1820 (hy000): you must reset your password using alter user statement before executing this statement.
mysql> 

 

9. 修改密码的方法：

alter user root@localhost identified by 'passwd';

# 'passwd' 里，填写你的新密码 。

新修改的密码中 必须包含 大小写字母数字及符号

 

 

end 。

 

完整的mysql相关操作，见之前的文章 

 

补充，

搭建博客的文章文章 -》