CentOS7 安装Mysql5.7(解压缩版)

#### 1、下载安装包 

http://dev.mysql.com/downloads/mysql/#downloads 

推荐下载通用安装方法的TAR包

2.检查库文件是否存在，如有删除。

[root@localhost Desktop]$ rpm -qa | grep mysql
mysql-libs-.-.el6_..x86_64
[root@localhost ~]$ rpm -e mysql-libs-..x86_64 --nodeps
[root@localhost ~]$
           

3.检查mysql组和用户是否存在，如无创建。

[root@localhost ~]$ cat /etc/group | grep mysql
mysql:x::
[root@localhost ~]$ cat /etc/passwd | grep mysql
mysql:x::::/home/mysql:/bin/bash
           

以上为默认存在的情况，如无，执行添加命令：

[root@localhost ~]$groupadd mysql
[root@localhost ~]$useradd -r -g mysql mysql
//useradd -r参数表示mysql用户是系统用户，不可用于登录系统。
           

4.解压TAR包，更改所属的组和用户

[[email protected] ~]$ cd /usr/local/
[[email protected] local]$ tar xvf mysql--linux-glibc2-x86_64.tar
[[email protected] local]$ ls -l
total 
-rwxr--r--.  root root   Jun   : mysql--linux-glibc2-x86_64.tar
-rw-r--r--.   wheel  Mar  : mysql--linux-glibc2-x86_64.tar.gz
-rw-r--r--.   wheel   Mar  : mysql-test--linux-glibc2-x86_64.tar.gz
[[email protected] local]$ tar xvfz mysql--linux-glibc2-x86_64.tar.gz
[[email protected] local]$ mv mysql--linux-glibc2-x86_64 mysql
[[email protected] local]$ ls -l
total 
drwxr-xr-x.  root root        Dec     bin
drwxr-xr-x.  root root        Dec     etc
drwxr-xr-x.  root root        Dec     games
drwxr-xr-x.  root root        Dec     include
drwxr-xr-x.  root root        Dec     lib
drwxr-xr-x.  root root        Dec   : lib64
drwxr-xr-x.  root root        Dec     libexec
drwxr-xr-x.   wheel       Mar  : mysql
-rwxr--r--.  root root   Jun   : mysql--linux-glibc2-x86_64.tar
-rw-r--r--.   wheel  Mar  : mysql--linux-glibc2-x86_64.tar.gz
-rw-r--r--.   wheel   Mar  : mysql-test--linux-glibc2-x86_64.tar.gz
drwxr-xr-x.  root root        Dec     sbin
drwxr-xr-x.  root root        Dec   : share
drwxr-xr-x.  root root        Dec     src
[[email protected] local]$ chown -R mysql mysql/
[[email protected] local]$ chgrp -R mysql mysql/
[[email protected] local]$ cd mysql/
           

5.安装和初始化数据库

[[email protected] mysql]$ bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/
-- :: [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize
-- :: [WARNING] The bootstrap log isn't empty:
-- :: [WARNING] --T22::Z  [Warning] --bootstrap is deprecated. Please consider using --initialize instead
--T22::Z  [Warning] Changed limits: max_open_files:  (requested )
--T22::Z  [Warning] Changed limits: table_open_cache:  (requested )
           

如果改变默认安装路径，则需要  1）/etc/my.cnf、/etc/init.d/mysqld中修改  basedir=’/apps/mysql’  datadir=’/apps/mysql/data’  2）创建ln  mkdir -p /usr/local/mysql/bin  ln -s /apps/mysql/bin/mysqld /usr/local/mysql/bin/mysqld

[root@localhost mysql]$

[root@localhost mysql]$ cp -a ./support-files/my-default.cnf /etc/my.cnf
[root@localhost mysql]$ cp -a ./support-files/mysql.server  /etc/init.d/mysqld
           

[root@localhost mysql]$ cd bin/
[root@localhost bin]# ./mysqld_safe --user=mysql &
[] 
[root@localhost bin]# 2016-06-01T22:27:09.708557Z mysqld_safe Logging to '/usr/local/mysql/data/localhost.localdomain.err'.
--T22::09.Z mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
           

[root@localhost bin]# /etc/init.d/mysqld restart
Shutting down MySQL..--T22::Z mysqld_safe mysqld from pid file /usr/local/mysql/data/localhost.localdomain.pid ended
 SUCCESS! 
Starting MySQL. SUCCESS! 
[]+  Done                    ./mysqld_safe --user=mysql
[root@localhost bin]$ 
//设置开机启动
[root@localhost bin]$ chkconfig --level  mysqld on
[root@localhost bin]$
           

6.初始化密码

mysql5.7会生成一个初始化密码，而在之前的版本首次登陆不需要登录。

[[email protected] bin]$ cat /root/.mysql_secret 
# Password set for user '[email protected]' at -- :: 
,xxxxxR5H9
[[email protected] bin]$./mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 
Server version: .

Copyright (c) , , 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> SET PASSWORD = PASSWORD('123456');
Query OK,  rows affected,  warning ( sec)

mysql> flush privileges;
Query OK,  rows affected ( sec)
           

7.添加远程访问权限

mysql> use mysql; 
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A


Database changed
mysql> update user set host = '%' where user = 'root';
Query OK, 1 row affected (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 0


mysql> select host, user from user;
+-----------+-----------+
| host      | user      |
+-----------+-----------+
| %         | root      |
| localhost | mysql.sys |
+-----------+-----------+
//一定要重启才会生效。
/etc/init.d/mysqld restart

遇到的问题：
             
 找不到mysql.sock，mysql.sock丢失问题解决方法       
         
连接Mysql时，机器上找不到mysql.sock文件你可以简单地通过重启服务器重新创建得到它。因为服务器在启动时重新创建它。


[[email protected] mysql-5.7.13]# ./bin/mysql_install_db --user=mysql

2016-06-26 02:47:09 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize

2016-06-26 02:47:09 [ERROR]   The data directory needs to be specified.

 

    解决：需要新建data目录，指定安装目录(在非默认目录时需要指定，默认路径：/usr/local/mysql，同时需要指定./support-files/mysql.server中的basedir和datadir为相应路径)。

[[email protected] mysql-5.7.13]# ./bin/mysql_install_db --user=mysql --basedir=/usr/local/mysql-5.7.13/ --datadir=/usr/local/mysql-5.7.13/data/

2016-06-26 02:48:47 [WARNING] mysql_install_db is deprecated. Please consider switching to mysqld --initialize

2016-06-26 02:49:19 [WARNING] The bootstrap log isn't empty:

2016-06-26 02:49:19 [WARNING] 2016-06-26T09:48:50.798592Z 0 [Warning] --bootstrap is deprecated. Please consider using --initialize instead

2016-06-26T09:48:50.898732Z 0 [Warning] Changed limits: max_open_files: 1024 (requested 5000)

2016-06-26T09:48:50.898778Z 0 [Warning] Changed limits: table_open_cache: 431 (requested 2000)

    以上报错均因未在mysql.server中指定自定义的路径。



         若是还提示已经有data文件了 删除了它，新建即可