linux上安装mysql

从执行结果，可以看出我们已经安装了mysql-libs-5.1.73-5.el6_6.x86_64，执行删除命令

<code class="  language-css">[root@localhost /]# rpm -e --nodeps mysql-libs-5.1.73-5.el6_6.x86_64
</code>

再次执行查询命令，查看是否删除

<code class="  language-csharp"><span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# rpm <span class="token operator">-qa <span class="token operator">| grep mysql
</span></span></span></span></span></code>

2、查询所有Mysql对应的文件夹

<code class="  language-ruby"><span class="token punctuation">[root<span class="token variable">@localhost <span class="token operator">/<span class="token punctuation">]<span class="token comment"># whereis mysql
mysql<span class="token punctuation">: <span class="token operator">/usr<span class="token operator">/bin<span class="token operator">/mysql <span class="token operator">/usr<span class="token operator">/include<span class="token operator">/mysql
<span class="token punctuation">[root<span class="token variable">@localhost lib<span class="token punctuation">]<span class="token comment"># find / -name mysql
<span class="token operator">/data<span class="token operator">/mysql
<span class="token operator">/data<span class="token operator">/mysql<span class="token operator">/mysql
</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></code>

删除相关目录或文件

<code class="  language-cpp">[root@localhost /]#  rm -rf /usr/bin/mysql /usr/include/mysql /data/mysql /data/mysql/mysql 
</code>

验证是否删除完毕

<code class="  language-csharp"><span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# whereis mysql
mysql<span class="token punctuation">:
<span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# find <span class="token operator">/ <span class="token operator">-name mysql
<span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# 
</span></span></span></span></span></span></span></span></span></span></span></span></code>

3、检查mysql用户组和用户是否存在，如果没有，则创建

<code class="  language-csharp"><span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# cat <span class="token operator">/etc<span class="token operator">/<span class="token keyword">group <span class="token operator">| grep mysql
<span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# cat <span class="token operator">/etc<span class="token operator">/passwd <span class="token operator">|grep mysql
<span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# groupadd mysql
<span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# useradd <span class="token operator">-r <span class="token operator">-g mysql mysql
<span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# 
</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></code>

4、从官网下载是用于Linux的Mysql安装包

下载命令：

<code class="  language-cpp">[root@localhost /]#  wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz
</code>

也可以直接到mysql官网选择其他版本进行下载。

二 安装Mysql

1、在执行wget命令的目录下或你的上传目录下找到Mysql安装包：mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz
执行解压命令：

<code class="  language-css">[root@localhost /]#  tar xzvf mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz
[root@localhost /]# ls
mysql-5.7.24-linux-glibc2.12-x86_64
mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz
</code>

解压完成后，可以看到当前目录下多了一个解压文件，移动该文件到/usr/local/mysql
执行移动命令：

<code class="  language-csharp"><span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# mv mysql<span class="token operator">-<span class="token number">5.7<span class="token number">.24<span class="token operator">-linux<span class="token operator">-glibc2<span class="token punctuation">.<span class="token number">12<span class="token operator">-x86_64 <span class="token operator">/usr<span class="token operator">/local<span class="token operator">/mysql
</span></span></span></span></span></span></span></span></span></span></span></span></span></span></code>

2、在/usr/local/mysql目录下创建data目录

<code class="  language-csharp"><span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# mkdir <span class="token operator">/usr<span class="token operator">/local<span class="token operator">/mysql<span class="token operator">/data
</span></span></span></span></span></span></span></code>

3、更改mysql目录下所有的目录及文件夹所属的用户组和用户，以及权限

<code class="  language-csharp"><span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# chown <span class="token operator">-<span class="token class-name">R mysql<span class="token punctuation">:mysql <span class="token operator">/usr<span class="token operator">/local<span class="token operator">/mysql
<span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# chmod <span class="token operator">-<span class="token class-name">R <span class="token number">755 <span class="token operator">/usr<span class="token operator">/local<span class="token operator">/mysql
</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></code>

4、编译安装并初始化mysql,务必记住初始化输出日志末尾的密码（数据库管理员临时密码）

<code class="  language-csharp"><span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# cd <span class="token operator">/usr<span class="token operator">/local<span class="token operator">/mysql<span class="token operator">/bin
<span class="token punctuation">[root@localhost bin<span class="token punctuation">]# <span class="token punctuation">.<span class="token operator">/mysqld <span class="token operator">--initialize <span class="token operator">--user<span class="token operator">=mysql <span class="token operator">--datadir<span class="token operator">=<span class="token operator">/usr<span class="token operator">/local<span class="token operator">/mysql<span class="token operator">/data <span class="token operator">--basedir<span class="token operator">=<span class="token operator">/usr<span class="token operator">/local<span class="token operator">/mysql
</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></code>

补充说明：

此时可能会出现错误：

出现该问题首先检查该链接库文件有没有安装使用 命令进行核查

<code class="  language-csharp"><span class="token punctuation">[root@localhost bin<span class="token punctuation">]# rpm <span class="token operator">-qa<span class="token operator">|grep libaio   
<span class="token punctuation">[root@localhost bin<span class="token punctuation">]# 
</span></span></span></span></span></span></code>

运行命令后发现系统中无该链接库文件

<code class="  language-csharp"><span class="token punctuation">[root@localhost bin<span class="token punctuation">]#  yum install  libaio<span class="token operator">-devel<span class="token punctuation">.x86_64
</span></span></span></span></code>

安装成功后，继续运行数据库的初始化命令，此时可能会出现如下错误：

执行如下命令后，再次运行数据库的初始化命令：

<code class="  language-csharp"><span class="token punctuation">[root@localhost bin<span class="token punctuation">]#  yum <span class="token operator">-y install numactl
</span></span></span></code>

5、运行初始化命令成功后，输出日志如下：

记录日志最末尾位置root@localhost:后的字符串，此字符串为mysql管理员临时登录密码。

6、编辑配置文件my.cnf，添加配置如下

<code class="  language-ruby"><span class="token punctuation">[root<span class="token variable">@localhost bin<span class="token punctuation">]<span class="token comment">#  vi /etc/my.cnf
<span class="token punctuation">[mysqld<span class="token punctuation">]
datadir<span class="token operator">=<span class="token operator">/usr<span class="token operator">/local<span class="token operator">/mysql<span class="token operator">/data
port <span class="token operator">= <span class="token number">3306
sql_mode<span class="token operator">=<span class="token constant">NO_ENGINE_SUBSTITUTION<span class="token punctuation">,<span class="token constant">STRICT_TRANS_TABLES
symbolic<span class="token operator">-links<span class="token operator">=<span class="token number">0
max_connections<span class="token operator">=<span class="token number">400
innodb_file_per_table<span class="token operator">=<span class="token number">1
<span class="token comment">#表名大小写不明感，敏感为
lower_case_table_names<span class="token operator">=<span class="token number">1
</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></code>

7、启动mysql服务器

<code class="  language-csharp"><span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# <span class="token operator">/usr<span class="token operator">/local<span class="token operator">/mysql<span class="token operator">/support<span class="token operator">-files<span class="token operator">/mysql<span class="token punctuation">.server start
</span></span></span></span></span></span></span></span></span></span></code>

显示如下结果，说明数据库安装成功

如果出现如下提示信息

<code class="  language-undefined">Starting MySQL... ERROR! The server quit without updating PID file
</code>

查看是否存在mysql和mysqld的服务，如果存在，则结束进程，再重新执行启动命令

<code class="  language-bash">#查询服务
ps -ef|grep mysql
ps -ef|grep mysqld
#结束进程
kill -9 PID
#启动服务
 /usr/local/mysql/support-files/mysql.server start
</code>

8、添加软连接，并重启mysql服务

<code class="  language-csharp"><span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]#  ln <span class="token operator">-s <span class="token operator">/usr<span class="token operator">/local<span class="token operator">/mysql<span class="token operator">/support<span class="token operator">-files<span class="token operator">/mysql<span class="token punctuation">.server <span class="token operator">/etc<span class="token operator">/init<span class="token punctuation">.d<span class="token operator">/mysql 
<span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]#  ln <span class="token operator">-s <span class="token operator">/usr<span class="token operator">/local<span class="token operator">/mysql<span class="token operator">/bin<span class="token operator">/mysql <span class="token operator">/usr<span class="token operator">/bin<span class="token operator">/mysql
<span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]#  service mysql restart
</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></code>

9、登录mysql，修改密码(密码为步骤5生成的临时密码)

<code class="  language-csharp"><span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]#  mysql <span class="token operator">-u root <span class="token operator">-p
<span class="token class-name">Enter password<span class="token punctuation">:
mysql<span class="token operator">><span class="token keyword">set password <span class="token keyword">for root@localhost <span class="token operator">= <span class="token function">password<span class="token punctuation">(<span class="token string">‘yourpass‘<span class="token punctuation">)<span class="token punctuation">;
</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></code>

10、开放远程连接

<code class="  language-bash">mysql>use mysql;
msyql>update user set user.Host=‘%‘ where user.User=‘root‘;
mysql>flush privileges;
</code>

11、设置开机自动启动

<code class="  language-csharp"><span class="token number">1、将服务文件拷贝到init<span class="token punctuation">.d下，并重命名为mysql
<span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# cp <span class="token operator">/usr<span class="token operator">/local<span class="token operator">/mysql<span class="token operator">/support<span class="token operator">-files<span class="token operator">/mysql<span class="token punctuation">.server <span class="token operator">/etc<span class="token operator">/init<span class="token punctuation">.d<span class="token operator">/mysqld
<span class="token number">2、赋予可执行权限
<span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# chmod <span class="token operator">+x <span class="token operator">/etc<span class="token operator">/init<span class="token punctuation">.d<span class="token operator">/mysqld
<span class="token number">3、添加服务
<span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# chkconfig <span class="token operator">--<span class="token keyword">add mysqld
<span class="token number">4、显示服务列表
<span class="token punctuation">[root@localhost <span class="token operator">/<span class="token punctuation">]# chkconfig <span class="token operator">--list</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></code>

linux上安装mysql

标签：com   ble   The   password   -128   mod   strip   https   follow