1.卸载系统自带的mysql
[root@zhangmeng ~]# rpm -qa |grep mysql mysql-libs-5.1.66-2.el6_3.x86_64 [root@zhangmeng ~]# [root@zhangmeng ~]# rpm -e mysql-libs-5.1.66-2.el6_3.x86_64; error: Failed dependencies: libmysqlclient.so.16()(64bit) is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64 libmysqlclient.so.16(libmysqlclient_16)(64bit) is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64 mysql-libs is needed by (installed) postfix-2:2.6.6-2.2.el6_1.x86_64 [root@zhangmeng ~]# [root@zhangmeng ~]# rpm -e mysql-libs-5.1.66-2.el6_3.x86_64 --nodeps; [root@zhangmeng ~]# [root@zhangmeng ~]# [root@zhangmeng ~]# rpm -qa |grep mysql
2.下载mysql安装包，需要安装wget用 yum -y install wget
[root@zhangmeng ~]# wget http://repo.mysql.com/mysql-community-release-el6-5.noarch.rpm -bash: wget: command not found [root@zhangmeng ~]# [root@zhangmeng ~]# [root@zhangmeng ~]# yum -y install wget Loaded plugins: fastestmirror Determining fastest mirrors * base: mirrors.cn99.com * extras: mirrors.cn99.com * updates: mirrors.sohu.com base | 3.7 kB 00:00 extras | 3.4 kB 00:00 updates | 3.4 kB 00:00 updates/primary_db | 2.5 MB 00:08
3.再次下载
[root@zhangmeng ~]# wget http://repo.mysql.com/mysql-community-release-el6-5.noarch.rpm --2017-08-18 11:49:03-- http://repo.mysql.com/mysql-community-release-el6-5.noarch.rpm Resolving repo.mysql.com... 104.102.164.25 Connecting to repo.mysql.com|104.102.164.25|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 5824 (5.7K) [application/x-redhat-package-manager] Saving to: ?.ysql-community-release-el6-5.noarch.rpm? 100%[==============================================>] 5,824 --.-K/s in 0.001s 2017-08-18 11:49:03 (9.44 MB/s) - ?.ysql-community-release-el6-5.noarch.rpm?.saved [5824/5824] [root@zhangmeng ~]# ls anaconda-ks.cfg install.log.syslog install.log mysql-community-release-el6-5.noarch.rpm [root@zhangmeng ~]#
4.安装
[root@zhangmeng ~]# rpm -ivh mysql-community-release-el6-5.noarch.rpm Preparing... ########################################### [100%] 1:mysql-community-release########################################### [100%] [root@zhangmeng ~]# [root@zhangmeng ~]# rpm -qa |grep -i mysql mysql-community-release-el6-5.noarch
5.安装mysql数据库
[root@zhangmeng ~]# yum install mysql-community-server -y Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirrors.cn99.com * extras: mirrors.cn99.com * updates: mirrors.sohu.com mysql-connectors-community | 2.5 kB 00:00 mysql-connectors-community/primary_db | 16 kB 00:00 mysql-tools-community | 2.5 kB 00:00 mysql-tools-community/primary_db | 36 kB 00:00 mysql56-community | 2.5 kB 00:00 mysql56-community/primary_db | 190 kB 00:00 Setting up Install Process
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========================================================================================
Package Arch Version Repository Size
========================================================================================
Installing:
mysql-community-server x86_64 5.6.37-2.el6 mysql56-community 55 M
Installing for dependencies:
libaio x86_64 0.3.107-10.el6 base 21 k
mysql-community-client x86_64 5.6.37-2.el6 mysql56-community 18 M
mysql-community-common x86_64 5.6.37-2.el6 mysql56-community 308 k
mysql-community-libs x86_64 5.6.37-2.el6 mysql56-community 1.9 M
numactl x86_64 2.0.9-2.el6 base 74 k
perl x86_64 4:5.10.1-144.el6 base 10 M
perl-DBI x86_64 1.609-4.el6 base 705 k
perl-Module-Pluggable x86_64 1:3.90-144.el6 base 41 k
perl-Pod-Escapes x86_64 1:1.04-144.el6 base 33 k
perl-Pod-Simple x86_64 1:3.13-144.el6 base 213 k
perl-libs x86_64 4:5.10.1-144.el6 base 579 k
perl-version x86_64 3:0.77-144.el6 base 52 k
Transaction Summary
========================================================================================
Install 13 Package(s)
Total download size: 86 M
Installed size: 373 M
Downloading Packages:
(1/13): libaio-0.3.107-10.el6.x86_64.rpm | 21 kB 00:00
(2/13): mysql-community-client-5.6.37-2.el6.x86_64.rpm | 18 MB 00:17
(3/13): mysql-community-common-5.6.37-2.el6.x86_64.rpm | 308 kB 00:01
(4/13): mysql-community-libs-5.6.37-2.el6.x86_64.rpm | 1.9 MB 00:03
(5/13): mysql-community-server-5.6.37-2.el6.x86_64.rpm | 55 MB 00:49
(6/13): numactl-2.0.9-2.el6.x86_64.rpm | 74 kB 00:00
(7/13): perl-5.10.1-144.el6.x86_64.rpm | 10 MB 00:04
(8/13): perl-DBI-1.609-4.el6.x86_64.rpm | 705 kB 00:00
(9/13): perl-Module-Pluggable-3.90-144.el6.x86_64.rpm | 41 kB 00:00
(10/13): perl-Pod-Escapes-1.04-144.el6.x86_64.rpm | 33 kB 00:00
(11/13): perl-Pod-Simple-3.13-144.el6.x86_64.rpm | 213 kB 00:00
(12/13): perl-libs-5.10.1-144.el6.x86_64.rpm | 579 kB 00:00
(13/13): perl-version-0.77-144.el6.x86_64.rpm | 52 kB 00:00
----------------------------------------------------------------------------------------
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Installed:
mysql-community-server.x86_64 0:5.6.37-2.el6
Dependency Installed:
libaio.x86_64 0:0.3.107-10.el6
mysql-community-client.x86_64 0:5.6.37-2.el6
mysql-community-common.x86_64 0:5.6.37-2.el6
mysql-community-libs.x86_64 0:5.6.37-2.el6
numactl.x86_64 0:2.0.9-2.el6
perl.x86_64 4:5.10.1-144.el6
perl-DBI.x86_64 0:1.609-4.el6
perl-Module-Pluggable.x86_64 1:3.90-144.el6
perl-Pod-Escapes.x86_64 1:1.04-144.el6
perl-Pod-Simple.x86_64 1:3.13-144.el6
perl-libs.x86_64 4:5.10.1-144.el6
perl-version.x86_64 3:0.77-144.el6
Complete!
[root@zhangmeng ~]#
6.查看安装后的mysql
[root@zhangmeng ~]# rpm -qa |grep -i mysql mysql-community-release-el6-5.noarch mysql-community-common-5.6.37-2.el6.x86_64 mysql-community-server-5.6.37-2.el6.x86_64 mysql-community-libs-5.6.37-2.el6.x86_64 mysql-community-client-5.6.37-2.el6.x86_64 [root@zhangmeng ~]#
7.将mysql设置为开机启动
[root@zhangmeng ~]# chkconfig --list |grep mysqld mysqld 0:off 1:off 2:off 3:on 4:on 5:on 6:off [root@zhangmeng ~]# [root@zhangmeng ~]# chkconfig mysqld on [root@zhangmeng ~]# [root@zhangmeng ~]# chkconfig --list |grep mysqld mysqld 0:off 1:off 2:on 3:on 4:on 5:on 6:off [root@zhangmeng ~]#
8.重启mysql服务
[root@zhangmeng ~]# mysqladmin -u root password 'root' mysqladmin: connect to server at 'localhost' failed error: 'Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)' Check that mysqld is running and that the socket: '/var/lib/mysql/mysql.sock' exists! [root@zhangmeng ~]# [root@zhangmeng ~]# [root@zhangmeng ~]# [root@zhangmeng ~]# service mysqld restart Stopping mysqld: [ OK ]
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9.配置mysql root 用户密码
[root@zhangmeng ~]# mysqladmin -u root password '123456' Warning: Using a password on the command line interface can be insecure. [root@zhangmeng ~]#
10.修改 mysql root 用户密码，下面新密码是以明文形式显示，故提示警告，建议采用密文形式
Warning: Using a password on the command line interface can be insecure.警告:在命令行界面上使用密码可能是不安全的。
[root@zhangmeng ~]# mysqladmin -uroot -p123456 password abc123
Warning: Using a password on the command line interface can be insecure.
[root@zhangmeng ~]#
11.登录mysql，查看root账号信息，修改密码后，再次查看root账号信息
[root@zhangmeng ~]# mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 7 Server version: 5.6.37 MySQL Community Server (GPL) Copyright (c) 2000, 2017, 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> 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>mysql> select Host,User,Password from user where User='root';
+-----------------------+------+-------------------------------------------+
| Host | User | Password |
+-----------------------+------+-------------------------------------------+
| localhost | root | *6691484EA6B50DDDE1926A220DA01FA9E575C18A |
| zhangmeng.example.com | root | |
| 127.0.0.1 | root | |
| ::1 | root | |
+-----------------------+------+-------------------------------------------+
4 rows in set (0.00 sec)
mysql> update user set password =password(123456) where user='root';
Query OK, 4 rows affected (0.28 sec)
Rows matched: 4 Changed: 4 Warnings: 0
mysql> select Host,User,Password from user where User='root';
+-----------------------+------+-------------------------------------------+
| Host | User | Password |
+-----------------------+------+-------------------------------------------+
| localhost | root | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
| zhangmeng.example.com | root | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
| 127.0.0.1 | root | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
| ::1 | root | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 |
+-----------------------+------+-------------------------------------------+