linux mysql 安装

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紧接着上文，这次是重装mysql，正好之前有人要lnmp的安装方法，算上这篇文章就全了。

安装前准备

如果mysql用户不存在，那么添加mysql用户

groupadd mysql
useradd-g mysql mysql

mysql编译安装

wget http://downloads.mysql.com/archives/mysql-5.1/mysql-5.1.70.tar.gz
tar-zxvf mysql-5.1.70.tar.gz
cdmysql-5.1.70
 
yuminstallncurses ncurses-devel
./configure '--prefix=/usr/local/mysql' '--without-debug' '--with-charset=utf8' '--with-extra-charsets=all' '--enable-assembler' '--with-pthread' '--enable-thread-safe-client' '--with-mysqld-ldflags=-all-static' '--with-client-ldflags=-all-static' '--with-big-tables' '--with-readline' '--with-ssl' '--with-embedded-server' '--enable-local-infile' '--with-plugins=innobase'
make
makeinstall

到此mysql就安装到了/usr/local/mysql路径下，下面开始mysql的配置工作
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安装mysql选项文件

cpsupport-files/my-medium.cnf/etc/my.cnf

mysql设置开机自启动

cp-r support-files/mysql.server/etc/init.d/mysqld 
/sbin/chkconfig--del mysqld
/sbin/chkconfig--add mysqld

配置权限表

chown-R mysql:mysql /usr/local/mysql
/usr/local/mysql/bin/mysql_install_db--user=mysql

启动mysql

/etc/init.d/mysqldstart

这一步可能会报错
/etc/init.d/mysqld: line 260: my_print_defaults: command not found
/etc/init.d/mysqld: line 263: my_print_defaults: command not found
/etc/init.d/mysqld: line 270: @HOSTNAME@: command not found
/etc/init.d/mysqld: line 279: @HOSTNAME@: command not found
/etc/init.d/mysqld: line 292: cd: @prefix@: No such file or directory
Starting MySQLCouldn't find MySQL manager (@bindir@/mysqlmanager) or server (@bindir@/mysqld_safe) [FAILED]

因为路径没有设置，请重启确认上面配置工作是否都完成，一般是configure后没有make和make install。

mysql初始化配置：

exportPATH=/usr/local/mysql/bin:$PATH
/usr/local/mysql/bin/mysql_secure_installation

mysql如何导入旧的数据：
直接拷贝数据库文件夹到数据目录下然后执行

/usr/local/mysql/bin/mysqladmin-u root -p flush-tables

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mysql安装过程中问题

1.
make[2]: Entering directory `/down/webinstall/mysql-5.1.57/mysql-test
make[3]: Entering directory `/down/webinstall/mysql-5.1.57/mysql-test
make[3]: Nothing to be done for `install-exec-am.
make INSTALL_TO_DIR="/usr/local/mysql/mysql-test" install_test_files
make[4]: Entering directory `/down/webinstall/mysql-5.1.57/mysql-test
时间较长
MYSQL安装到这里卡了很久，可能以为出错了，实际上MYSQL已经安装成功了，它这步过段时间就会好了，是mysql在自我编译测试造成的。

2.checking for termcap functions library... configure: error: No curses/termcap library found
yum install ncurses ncurses-devel

3.Starting MySQL.Manager of pid-file quit without updating fi[FAILED]

启动数据库之前，需要先配置权限表，其中/usr/local/mysql为mysql的安装目录
chown -R mysql:mysql /usr/local/mysql
/usr/local/mysql/bin/mysql_install_db --user=mysql