bitsCN.com
而这些东西,正是新手很困惑的地方。一下是我的安装笔记,在Centos虚拟机上安装成功。中文的参考:http://xieyu.blog.51cto.com/213338/59749英文的参考 How to Install MySQL 5.0 on Linux,How to Install PHP 5 on Linux ,How to Install Apache 2 on Linux
Linux mysqlapache php 安装过程。将apache ,mysql ,php 的tar.gz 文件复制到/home/tmp目录。接着执行下面的命令
Linux mysql 安装
cd /home/tmp groupadd mysql useradd -g mysql mysql tar -zxvf mysql-5.1.33.tar.gz cd mysql-5.1.33 ./configure --prefix=/usr/local/mysql make make install cd /usr/local/mysql chown -R root . bin/mysql -u root -p chgrp -R mysql .(注意有个.) cd /home/tmp cd mysql-5.1.33 ln -s /usr/local/mysql/ /usr/local/mysql cp support-files/my-small.cnf /etc/my.cnf 修改my.cnf 在[sqld]下面添加user=mysql. chown root /etc/my.cnf chgrp root /ect/my.cnf chmod 644 /etc/my.cnf /usr/local/mysql/bin/mysqld_safe --user=mysql & cp support-files/mysql.server /etc/init.d/mysql chmod 755 /etc/init.d/mysql chkconfig --add mysql chkconfig --level 35 mysql on /usr/local/mysql/bin/mysql_install_db --user=mysql /usr/local/mysql/bin/mysql -u root(如果能进入mysql 命令行,说明mysql 配置成功。) edit /etc/my.cnf
[client] + default-character-set=utf8 [mysqld] + default-character-set=utf8 [mysql] + default-character-set=utf8
apache安装,请先进入/home/tmp目录(cd /home/tmp) tar -zxvf httpd-2.2.13.tar.gz cd httpd-2.2.13./configure --prefix=/usr/local/apache2 --enable-so --enable-rewrite --enable-auth-digest=shared --enable-ssl --enable-deflate make history make install cp /usr/local/apache2/bin/apachectl /etc/init.d chmod 755 /etc/init.d/apachectl /usr/local/apache2/bin/apachectl start php的安装 cd /home/tmp tar -xzf php-5.3.0.tar.gz cd php-5.3.0 ./configure --prefix=/usr/local/php / --with-apxs2=/usr/local/apache2/bin/apxs / --with-mysql=/usr/local/mysql / --with-pdo-mysql / --with-zlib / --with-libxml-dir / --with-xsl / --enable-mbstring / --enable-zend-multibyte / --enable-sockets / --enable-soap / --enable-zip
Linux mysql
make install修改apache httpd.conf(apache/conf/httpd.conf)添加如下部分:LoadModule php5_module modules/libphp5.so AddType application/x-httpd-php .php
cp php.ini-development /usr/local/php/lib/php.ini /usr/local/apache2/bin/apachectl start /usr/local/apache2/bin/apachectl stop /usr/local/apache2/bin/apachectl start 附:Linux mysql 允许远程连接
/usr/local/mysql/bin/mysql -u root -p (进入mysql) use mysql; SELECT `Host`,`User` FROM user; UPDATE user SET `Host` = '%' WHERE `User` = 'root' LIMIT 1; flush privileges; 注意在mysql 命令行形式下一定要输入";". v经过configure就可以make了
Linux mysql
make install注意pdo_mysql的全路径,我的是:
/usr/local/php/lib/php/extensions/debug-non-zts-20060613/pdo_mysql.so
然后在/usr/local/lib/php.ini
加上一句:
extension=/usr/local/php/lib/php/extensions/debug-non-zts-20060613/pdo_mysql.so
重新启动apache即可看到已经加载pdo_mysql成功。
在ubuntu7.10中mysql安装,默认是只能本机访问的,需要打开用户权限和mysql的本机绑定
1、在命令行底下打开用户权限:grant all privileges on drupal.* to user@192.168.1.80 identified by 'user-password';
在管理员界面可以通过用户管理add host->any host来添加访问权限(root用户默认只能访问本机,新添加的用户可远程)
2、取消mysql本机绑定:
编辑/etc/mysql/my.cnf
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address = 127.0.0.1
将”bind-address = 127.0.0.1“注释
sudo /etc/init.d/mysql restart重启即可远程访问bitsCN.com

Stored procedures are precompiled SQL statements in MySQL for improving performance and simplifying complex operations. 1. Improve performance: After the first compilation, subsequent calls do not need to be recompiled. 2. Improve security: Restrict data table access through permission control. 3. Simplify complex operations: combine multiple SQL statements to simplify application layer logic.

The working principle of MySQL query cache is to store the results of SELECT query, and when the same query is executed again, the cached results are directly returned. 1) Query cache improves database reading performance and finds cached results through hash values. 2) Simple configuration, set query_cache_type and query_cache_size in MySQL configuration file. 3) Use the SQL_NO_CACHE keyword to disable the cache of specific queries. 4) In high-frequency update environments, query cache may cause performance bottlenecks and needs to be optimized for use through monitoring and adjustment of parameters.

The reasons why MySQL is widely used in various projects include: 1. High performance and scalability, supporting multiple storage engines; 2. Easy to use and maintain, simple configuration and rich tools; 3. Rich ecosystem, attracting a large number of community and third-party tool support; 4. Cross-platform support, suitable for multiple operating systems.

The steps for upgrading MySQL database include: 1. Backup the database, 2. Stop the current MySQL service, 3. Install the new version of MySQL, 4. Start the new version of MySQL service, 5. Recover the database. Compatibility issues are required during the upgrade process, and advanced tools such as PerconaToolkit can be used for testing and optimization.

MySQL backup policies include logical backup, physical backup, incremental backup, replication-based backup, and cloud backup. 1. Logical backup uses mysqldump to export database structure and data, which is suitable for small databases and version migrations. 2. Physical backups are fast and comprehensive by copying data files, but require database consistency. 3. Incremental backup uses binary logging to record changes, which is suitable for large databases. 4. Replication-based backup reduces the impact on the production system by backing up from the server. 5. Cloud backups such as AmazonRDS provide automation solutions, but costs and control need to be considered. When selecting a policy, database size, downtime tolerance, recovery time, and recovery point goals should be considered.

MySQLclusteringenhancesdatabaserobustnessandscalabilitybydistributingdataacrossmultiplenodes.ItusestheNDBenginefordatareplicationandfaulttolerance,ensuringhighavailability.Setupinvolvesconfiguringmanagement,data,andSQLnodes,withcarefulmonitoringandpe

Optimizing database schema design in MySQL can improve performance through the following steps: 1. Index optimization: Create indexes on common query columns, balancing the overhead of query and inserting updates. 2. Table structure optimization: Reduce data redundancy through normalization or anti-normalization and improve access efficiency. 3. Data type selection: Use appropriate data types, such as INT instead of VARCHAR, to reduce storage space. 4. Partitioning and sub-table: For large data volumes, use partitioning and sub-table to disperse data to improve query and maintenance efficiency.

TooptimizeMySQLperformance,followthesesteps:1)Implementproperindexingtospeedupqueries,2)UseEXPLAINtoanalyzeandoptimizequeryperformance,3)Adjustserverconfigurationsettingslikeinnodb_buffer_pool_sizeandmax_connections,4)Usepartitioningforlargetablestoi


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