CentOS6.3安装MySQL5.5

yum remove mysql

wget http://www.cmake.org/files/v2.8/cmake-2.8.4.tar.gz

tar -xvf cmake-2.8.4.tar.gz

cd cmake-2.8.4；

./bootstrap

---------------------------------------------
CMake 2.8.4, Copyright 2000-2009 Kitware, Inc.
---------------------------------------------
Error when bootstrapping CMake:
Cannot find appropriate C compiler on this system.
Please specify one using environment variable CC.
See cmake_bootstrap.log for compilers attempted.

---------------------------------------------
Log of errors: /usr/local/src/cmake-2.8.4/Bootstrap.cmk/cmake_bootstrap.log
---------------------------------------------
报错：缺少C的编译器
解决办法：安装gcc编译器
[root@localhost ~]# yum install gcc

继续安装Cmake
[root@localhost cmake-2.8.4]# ./bootstrap

---------------------------------------------
CMake 2.8.4, Copyright 2000-2009 Kitware, Inc.
C compiler on this system is: cc
---------------------------------------------
Error when bootstrapping CMake:
Cannot find appropriate C++ compiler on this system.
Please specify one using environment variable CXX.
See cmake_bootstrap.log for compilers attempted.
---------------------------------------------
Log of errors: /usr/local/src/cmake-2.8.4/Bootstrap.cmk/cmake_bootstrap.log
---------------------------------------------
报错：缺少C++编译器
解决办法：安装gcc-c++编译器
[root@localhost ~]# yum install gcc-c++

再次安装
[root@localhost cmake-2.8.4]# ./bootstrap
没有报错，编译安装
[root@localhost cmake-2.8.4]# gmake
[root@localhost cmake-2.8.4]# gmake install

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4.正式开始安装MySQL
添加MySQL用户和用户组
[root@localhost ~]# groupadd mysql
[root@localhost ~]# useradd -g mysql mysql

MySQL源码包从共享文件夹移至/usr并解压
[root@localhost ~]mv /mnt/hgfs/Share-CentOS/mysql-5.5.22.tar.gz /usr/mysql-5.5.22.tar.gz
[root@localhost usr]# tar xzvf mysql-5.5.22.tar.gz
[root@localhost usr]# cd mysql-5.5.22

Cmake运行
[root@localhost mysql-5.5.22]# cmake .

开始编译安装
[root@localhost mysql-5.5.22]# make && make install

进入安装目录，将程序二进制的所有权改为root，数据目录的说有权改为mysql用户，更新授权表
[root@localhost mysql-5.5.22]# cd /usr/local/mysql/
[root@localhost mysql]# chown -R root .
[root@localhost mysql]# chown -R mysql .
[root@localhost mysql]# chgrp -R mysql .
[root@localhost mysql]# scripts/mysql_install_db --user=mysql

安全启动MySQL(默认密码为空)
[root@localhost mysql]#./bin/mysqld_safe --user=mysql&

报错：

130116 22:38:46 [ERROR] /usr/local/mysql/bin/mysqld: Can't create/write to file '/var/run/mysqld/mysqld.pid' (Errcode: 2)
130116 22:38:46 [ERROR] Can't start server: can't create PID file: No such file or directory
解决方法：

                     
mysqld目录不存在，创建它：


#mkdir /var/run/mysqld
#cd /var/run/mysqld


创建文件mysqld.pid：


#touch mysqld.pid
#cd..
#chown -R mysql mysqld .

#cd /usr/local/mysql/
#bin/mysqld_safe --user=mysql &
nohup: ignoring input and redirecting stderr to stdout
Starting mysqld daemon with databases from /var/lib/mysql

能正常启动

#bin/mysqladmin -u root password root

又出错

[root@localhost mysql]# bin/mysqladmin -u root password root
bin/mysqladmin: connect to server at 'localhost' failed
error: 'Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)'
Check that mysqld is running and that the socket: '/tmp/mysql.sock' exists!

[root@localhost mysql]# bin/mysql -u root -p
Enter password:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

分析：是/tmp/mysql.sock 不存在


# cd /var/lib/mysql/

由于mysql 默认的mysql.sock 是在/var/lib/mysql/mysql.sock，创建符号连接：


# ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock
# bin/mysql -u root
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 1
Server version: 5.0.45 MySQL Community Server (GPL)

Type 'help;' or 'h' for help. Type 'c' to clear the buffer.

报错：

120908 00:16:25 mysqld_safe Logging to '/usr/local/mysql/data/CentOS.err'.
120908 00:16:26 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data

解决方法：
[root@CentOS ~]# cd /usr/local/mysql/data

[root@CentOS data]# ls -l
总用量 29744
-rw-rw----  1 mysql root      1585 9月   8 00:16 CentOS.err
-rw-rw----  1 mysql mysql        6 9月   8 00:16 CentOS.pid
-rw-rw----  1 mysql mysql 18874368 9月   8 00:16 ibdata1
-rw-rw----  1 mysql mysql  5242880 9月   8 00:16 ib_logfile0
-rw-rw----  1 mysql mysql  5242880 9月   8 00:16 ib_logfile1
drwxr-xr-x  2 mysql mysql     4096 9月   8 00:14 mysql
-rw-rw----  1 mysql mysql    27293 9月   8 00:14 mysql-bin.000001
-rw-rw----  1 mysql mysql  1031892 9月   8 00:14 mysql-bin.000002
-rw-rw----  1 mysql mysql      107 9月   8 00:16 mysql-bin.000003
-rw-rw----  1 mysql mysql       57 9月   8 00:16 mysql-bin.index
drwx------  2 mysql mysql     4096 9月   8 00:14 performance_schema
drwxr-xr-x  2 mysql mysql     4096 9月   8 00:08 test
[root@CentOS data]# chgrp -R mysql CentOS.err
[root@CentOS data]# ls -l
总用量 29736
-rw-rw---- 1 mysql mysql     1585 9月   8 00:16 CentOS.err
-rw-rw---- 1 mysql mysql        6 9月   8 00:16 CentOS.pid
-rw-rw---- 1 mysql mysql 18874368 9月   8 00:16 ibdata1
-rw-rw---- 1 mysql mysql  5242880 9月   8 00:16 ib_logfile0
-rw-rw---- 1 mysql mysql  5242880 9月   8 00:16 ib_logfile1
drwxr-xr-x 2 mysql mysql     4096 9月   8 00:14 mysql
-rw-rw---- 1 mysql mysql    27293 9月   8 00:14 mysql-bin.000001
-rw-rw---- 1 mysql mysql  1031892 9月   8 00:14 mysql-bin.000002
-rw-rw---- 1 mysql mysql      107 9月   8 00:16 mysql-bin.000003
-rw-rw---- 1 mysql mysql       57 9月   8 00:16 mysql-bin.index
drwx------ 2 mysql mysql     4096 9月   8 00:14 performance_schema
drwxr-xr-x 2 mysql mysql     4096 9月   8 00:08 test

连接本机MySQL
[root@localhost mysql]#mysql –u root –p
提示输入password，默认为空，按Enter即可

断开连接
mysql>exit;

为root账户设置密码
[root@localhost ~]# cd /usr/local/mysql/bin
[root@localhost mysql]# ./bin/mysqladmin -u root password 123456
Enter Password:123456

设置选项文件，将配置文件拷贝到/etc下
[root@localhost mysql]# cp support-files/my-medium.cnf /etc/mysql.cnf

设置开机自启动
[root@localhost mysql]# cp support-files/mysql.server /etc/init.d/mysql
[root@localhost mysql]# chmod +x /etc/init.d/mysql

通过服务来启动和关闭Mysql
[root@localhost ~]# service mysql start
[root@localhost ~]# service mysql stop

5.安装设置完毕，之后使用只需启动-连接-断开-关闭，命令如下：
[root@CentOS mysql]# service mysql start
Starting MySQL..                                           [确定]
[root@CentOS mysql]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.5.22 Source distribution

Copyright (c) 2000, 2011, 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> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| test               |
+--------------------+
4 rows in set (0.07 sec)

mysql> exit;
Bye
[root@CentOS mysql]# service mysql stop
Shutting down MySQL.                                       [确定]

6.其它：
查看进程命令 ps –ef|grep mysqld
kill进程命令 kill –9 进程号