二進制格式mysql安裝說明(mysql-5.5.49)
# less INSTALL-BINARY
To install and use a MySQL binary distribution, the command sequence looks like this:
shell> groupadd mysql
shell> useradd -r -g mysql -s /bin/false mysql
shell> cd /usr/local
shell> tar zxvf /path/to/mysql-VERSION-OS.tar.gz
shell> ln -s full-path-to-mysql-VERSION-OS mysql
shell> cd mysql
shell> chown -R mysql .
shell> chgrp -R mysql .
shell> scripts/mysql_install_db --user=mysql
shell> chown -R root .
shell> chown -R mysql data
# Next command is optional
shell> cp support-files/my-medium.cnf /etc/my.cnf
shell> bin/mysqld_safe --user=mysql &
# Next command is optional
shell> cp support-files/mysql.server /etc/init.d/mysql.server
1)新建用戶以安全方式運行進程
# groupadd -r mysql
# useradd -g mysql -r -s /sbin/nologin -M -d /mydata/data mysql
# chown -R mysql:mysql /data/mysql
# ln -sv mysql-5.5.49 mysql
# cd /usr/local/mysql
# chown -R root:mysql .
# scripts/mysql_install_db --user=mysql --datadir=/data/mysql
4)mysql主配置文件
# cd /usr/local/mysql
# cp support-files/my-large.cnf /etc/my.cnf
並修改此文件中thread_concurrency的值爲你的CPU個數乘以2,好比這裏使用以下行:
thread_concurrency = 2
另外還須要添加以下行指定mysql數據文件的存放位置:
datadir = /data/mysql
5)mysql提供sysv服務腳本
# cd /usr/local/mysql
# cp support-files/mysql.server /etc/rc.d/init.d/mysqld
添加至服務列表:
# chkconfig --add mysqld
# chkconfig mysqld on
mysql配置文件格式:片斷式
配置文件的順序,如有衝突,最後一個生效
/etc/my.cnf --> /etc/mysql/my.cnf --> $BASEDIR/my.cnf --> ~/.my.cnf
6)啓動mysql
service mysqld start
7)測試httpd與mysql通訊是否正常
<?php
$connect=mysql_connect('localhost','root','');
if ($connect)
echo "Success...";
else
echo "Failed...";
?>
此處要將index,html重命名爲index.php才能夠正常解析php
自定義安裝後須要的配置
1)創建man文件(/etc/man.config)
MANPATH /usr/local/mysql/man
2)創建庫文件緩存/etc/ld.so.cache
# vim /etc/ld.so.conf.d/mysql-x86_64.conf 添加庫文件路徑
# ldconfig -v
3)連接頭文件(最好使用絕對路徑)
ln -sv /usr/local/mysql/include /usr/include/mysql
4)PATH
# vim /etc/profile.d/mysql.sh
export PATH=$PATH:/usr/local/mysql/bin
說明:
MySQL服務器維護了兩類變量:
服務器變量:
定義MySQL服務器運行特性
SHOW GLOBAL VARIABLES [LIKE 'STRING'];
狀態變量:
保存了MySQL服務器運行統計數據
SHOW GLOBAL STATUS [LIKE 'STRING']
mysql> show global variables like 'socket';
+---------------+-----------------+
| Variable_name | Value |
+---------------+-----------------+
| socket | /tmp/mysql.sock |
+---------------+-----------------+
mysql> show global variables like 'datadir';
+---------------+--------+
| Variable_name | Value |
+---------------+--------+
| datadir | /data/ |
+---------------+--------+
MySQL通配符:
_:任意單個字符
%:任意長度的任意字符
內置函數,user();database();version();
select version();
+------------+
| version() |
+------------+
| 5.5.49-log |
+------------+
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