mysql的安装
一、yum源格式安装mysql
1、将下载的yum包上传到linux上：
[root@localhost ~]# ls
mysql-community-release-el6-5.noarch.rpm
2、列出rpm包中文件（查看哪些内容）：
[root@localhost ~]# rpm -qpl mysql-community-release-el6-5.noarch.rpm
/etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
/etc/yum.repos.d/mysql-community-source.repo
/etc/yum.repos.d/mysql-community.repo
3、安装rpm包（自动配置好yum源）：
[root@localhost ~]# rpm -ivh mysql-community-release-el6-5.noarch.rpm
Preparing... ########################################### [100%]
1:mysql-community-release########################################### [100%]
4、安装mysql：
[root@localhost ~]# yum install mysql-community-server.x86_64 -y
Loaded plugins: fastestmirror, refresh-packagekit, security
Existing lock /var/run/yum.pid: another copy is running as pid 2460.
Another app is currently holding the yum lock; waiting for it to exit... Verifying : mysql-community-libs-5.6.29-2.el6.x86_64 5/8
Verifying : 2:postfix-2.6.6-6.el6_7.1.x86_64 6/8
Verifying : 2:postfix-2.6.6-2.2.el6_1.x86_64 7/8
Verifying : mysql-libs-5.1.71-1.el6.x86_64 8/8
Installed:
mysql-community-libs.x86_64 0:5.6.29-2.el6 mysql-community-libs-compat.x86_64 0:5.6.29-2.el6 mysql-community-server.x86_64 0:5.6.29-2.el6
Dependency Installed:
mysql-community-client.x86_64 0:5.6.29-2.el6 mysql-community-common.x86_64 0:5.6.29-2.el6
Dependency Updated:
postfix.x86_64 2:2.6.6-6.el6_7.1
Replaced:
mysql-libs.x86_64 0:5.1.71-1.el6
Complete!
5、是否安装了mysql：
[root@localhost ~]# rpm -qa | grep mysql
mysql-community-libs-5.6.29-2.el6.x86_64
mysql-community-server-5.6.29-2.el6.x86_64
mysql-community-client-5.6.29-2.el6.x86_64
mysql-community-libs-compat-5.6.29-2.el6.x86_64
mysql-community-release-el6-5.noarch
mysql-community-common-5.6.29-2.el6.x86_64
6、接下来是初始化数据库：
[root@localhost ~]# mysql_install_db --datadir=/var/lib/mysql/
Installing MySQL system tables...2016-03-15 11:00:50 0 [Warning] TIMESTAMP wi
7、更改数据库目录权限并启动mysql：
[root@localhost ~]# chown -R mysql:mysql /var/lib/mysql/
[root@localhost ~]# ll -h /var/lib/mysql/
总用量 109M
-rw-rw----. 1 mysql mysql 12M 3月 15 11:00 ibdata1
-rw-rw----. 1 mysql mysql 48M 3月 15 11:00 ib_logfile0
-rw-rw----. 1 mysql mysql 48M 3月 15 11:00 ib_logfile1
drwx------. 2 mysql mysql 4.0K 3月 15 11:00 mysql
drwx------. 2 mysql mysql 4.0K 3月 15 11:00 performance_schema
[root@localhost ~]# /etc/init.d/mysqld start
正在启动 mysqld： [确定]
8、登录mysql并修改密码：
[root@localhost ~]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.6.29 MySQL Community Server (GPL) 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>
mysql> update mysql.user set password=password("123456")where user='root';
Query OK, 3 rows affected (0.11 sec)
Rows matched: 4 Changed: 3 Warnings: 0
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
+--------------------+
3 rows in set (0.04 sec)
二、RPM方式安装mysql：
1.将下载好的文件上传到Linux下：
[root@localhost Downloads]# ls
MySQL-5.6.16-1.el6.x86_64.rpm-bundle.tar
2、解压tar文件：
[root@localhost Downloads]# tar -xf MySQL-5.6.16-1.el6.x86_64.rpm-bundle.tar
[root@localhost Downloads]# ls
MySQL-client-5.6.16-1.el6.x86_64.rpm
MySQL-devel-5.6.16-1.el6.x86_64.rpm
MySQL-embedded-5.6.16-1.el6.x86_64.rpm
MySQL-server-5.6.16-1.el6.x86_64.rpm
MySQL-shared-5.6.16-1.el6.x86_64.rpm
MySQL-shared-compat-5.6.16-1.el6.x86_64.rpm
MySQL-test-5.6.16-1.el6.x86_64.rpm
3、安装rpm文件:
[root@localhost Downloads]# rpm -Uvh MySQL-*
Preparing... ########################################### [100%]
1:MySQL-devel ########################################### [ 14%]
2:MySQL-client ########################################### [ 29%]
3:MySQL-test ########################################### [ 43%]
4:MySQL-embedded ########################################### [ 57%]
5:MySQL-shared-compat ########################################### [ 71%]
6:MySQL-shared ########################################### [ 86%]
7:MySQL-server ########################################### [100%]
4、启动mysql服务：
[root@localhost mysql]# /etc/init.d/mysql start
Starting MySQL........ [ OK ]