安装两个mysql

今天准备在外网多安装一个mysql来测试新版开发的网站－－使用不同数据库连接.

不用说，路径,端口,socket肯定要不相同

# tar xvf mysql-5.0.41.tar.gz

# cd mysql-5.0.41/

# mkdir /usr/local/mysql5
# ./configure --prefix=/usr/local/mysql5 --localstatedir=/var/lib/mysql5
--with-comment=Source --with-server-suffix=-Linuxtone.Org --with-mysqld-user=mysql --without-debug --with-big-tables --with-charset=gbk --with-collation=gbk_chinese_ci --with-extra-charsets=all --with-pthread --enable-static --enable-thread-safe-client --with-client-ldflags=-all-static --with-mysqld-ldflags=-all-static --enable-assembler --with-plugins=all --without-ndb-debug
make
make install

# ll /var/lib/mysql5 看看有没有产生这个目录，没有就新建一个mkdir /var/lib/mysql5

初始化数据库
# /usr/local/mysql5/bin/mysql_install_db
# cd /usr/local/mysql5
授权
# chown -R mysql:mysql .

# chown -R mysql:mysql /var/lib/mysql5

#chgrp -R mysql .

复制配置文件到/etc目录
# cp share/mysql/my-huge.cnf /etc/my5.cnf

开机自行启动服务，将脚本复制到/etc/rc.d/init.d/

# cp share/mysql/mysql.server /etc/rc.d/init.d/mysql5

mysql服务脚本作适当的修改，可以参照network服务脚本格式，如果不修改有时候不能识别

#

# head -15 /etc/rc.d/init.d/network
#! /bin/bash
#
# network       Bring up/down networking
#
# chkconfig: 2345 10 90
# description: Activates/Deactivates all network interfaces configured to \
#              start at boot time.
#
### BEGIN INIT INFO
# Provides: $network
### END INIT INFO

# Source function library.
. /etc/init.d/functions

————————————————————————————————－－
修改后的mysql5服务脚本
# head -15 /etc/rc.d/init.d/mysql5
#!/bin/sh
#
# mysql       Bring up/down mysql
#
# chkconfig: 2345 86 10 
# description: Activates/Deactivates all network interfaces configured to \
#              start at boot time.
#
### BEGIN INIT INFO
# Provides: $mysql
### END INIT INFO

# Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB
# This file is public domain and comes with NO WARRANTY of any kind


在第5行注意启动级别不能冲突  －－－> # chkconfig: 2345 86 10


搜索修改：
1.datadir=/var/lib/mysql5
2.conf=/etc/my5.cnf
3.把$bindir/mysqld_safe --datadir=$datadir --pid-file=$server_pid_file $other_args >/dev/null 2>&1 &替换为
$bindir/mysqld_safe --defaults-file=/etc/my5.cnf --datadir=$datadir --pid-file=$server_pid_file $other_args >/dev/null 2>&1 &


保存退出，添加服务
# chkconfig --add mysql5

修改/etc/my5.cnf

端口：你想要的端口，条件是不能和其他服务冲突
port = 6606
socket = /tmp/mysql5.sock
...............下面同样


启动服务
# service mysql5 start
Starting MySQL                                             [确定]



两个端口出来了
# netstat -ntlp | grep mysql
tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN      1924/mysqld        
tcp        0      0 0.0.0.0:6606                0.0.0.0:*                   LISTEN      1976/mysqld        



登录：
先前安装的不必指定socket，但是后装的要指定socket，
改下密码，我喜欢这种方式改.如果忘掉mysql密码也可这样重置mysql的root密码
停掉mysql服务（两个），因为等一下该的时候会冲突，/mysqld_safe & 启动是默认是3306端口
# service mysql stop
Shutting down MySQL..                                      [确定]
# service mysql5 stop
Shutting down MySQL                                        [确定]
# /usr/local/mysql5/bin/mysqld_safe --skip-grant-tables &
# netstat -ntlp | grep mysql
tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN      3087/mysqld       

# mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.0.41-Community-log Source

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

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| test               |
| ubunt              |
+--------------------+
4 rows in set (0.00 sec)

 mysql> use mysql;

 mysql> update user set password=password('newpasswd') where user='root';
Query OK, 3 rows affected (0.01 sec)
Rows matched: 3  Changed: 3  Warnings: 0

修改成功，刷新权限...（括号里是要想修改的密码）.

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

重启服务，
# service mysql5 restart
Shutting down MySQLSTOPPING server from pid file /var/lib/mysql5/station188.cluster.com.pid
110428 21:01:26  mysqld ended

                                                           [确定]
Starting MySQL                                             [确定]
[1]+  Done                    /usr/local/mysql5/bin/mysqld_safe --skip-grant-tables

查看端口
# netstat -ntlp | grep mysql
tcp        0      0 0.0.0.0:6606                0.0.0.0:*                   LISTEN      3163/mysqld        

登录
# mysql -uroot -pnewpasswd --socket=/tmp/mysql5.sock
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.0.41-Community-log Source

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

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| test               |
| ubunt              |
+--------------------+
4 rows in set (0.00 sec)

另一个mysql登录
# service mysql start
Starting MySQL                                             [确定]

# netstat -ntlp | grep mysql
tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN      3213/mysqld        
tcp        0      0 0.0.0.0:6606                0.0.0.0:*                   LISTEN      3163/mysqld        

# mysql -uroot -p123456
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.0.41-log Source distribution

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

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| redhat             |
| test               |
+--------------------+
4 rows in set (0.00 sec)