linux php如何安装mysql数据库

chkconfig iptables off

从<a style='color:#f60; text-decoration:underline;' href="//m.sbmmt.com/zt/15713.html" target="_blank">mysql</a>官网上下载自己适合的mysql版本

mysql-5.6.40-linux-glibc2.12-i686.tar.gz

 tar -zxvf mysql-5.6.40-linux-glibc2.12-i686.tar.gz

mv mysql-5.6.40-linux-glibc2.12-i686 mysql

groupadd mysql
useradd -r -g mysql mysql

cp support-files/my-medium.cnf /etc/my.cnf
或：
cp support-files/my-default.cnf /etc/my.cnf

是否覆盖？按y 回车

vi /etc/my.cnf

 1 # For advice on how to change settings please see 2 # http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html 3 # *** DO NOT EDIT THIS FILE. It's a template which will be copied to the 4 # *** default location during install, and will be replaced if you 5 # *** upgrade to a newer version of MySQL. 6  7 [mysqld] 8  9 # Remove leading # and set to the amount of RAM for the most important data10 # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.11 # innodb_buffer_pool_size = 128M12 13 # Remove leading # to turn on a very important data integrity option: logging14 # changes to the binary log between backups.15 # log_bin16 17 # These are commonly set, remove the # and set as required.18 basedir = /usr/local/mysql19 datadir = /usr/local/mysql/data20 port = 330621 # server_id = .....22 socket = /tmp/mysql.sock23 character-set-server = utf824 skip-name-resolve25 log-err = /usr/local/mysql/data/error.log26 pid-file = /usr/local/mysql/data/mysql.pid27 28 # Remove leading # to set options mainly useful for reporting servers.29 # The server defaults are faster for transactions and fast SELECTs.30 # Adjust sizes as needed, experiment to find the optimal values.31 # join_buffer_size = 128M32 # sort_buffer_size = 2M33 # read_rnd_buffer_size = 2M 
34 35 sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

chown -R mysql .
chgrp -R mysql .
scripts/mysql_install_db --user=mysql
chown -R root .
chown -R mysql data

./mysql_install_db --verbose --user=root --defaults-file=/etc/my.cnf --datadir=/usr/local/mysql/data --basedir=/usr/local/mysql --pid-file=/usr/local/mysql/data/mysql.pid --tmpdir=/tmp

./mysqld_safe --defaults-file=/etc/my.cnf --socket=/tmp/mysql.sock --user=root &

注意，如果光标停留在屏幕上，表示启动成功，需要我们先关闭shell终端，再开启一个新的shell终端，不要执行退出操作。如果出现 mysql ended这样的语句，表示Mysql没有正常启动，你可以到log中查找问题.

<span style="color: #000000;">cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
cp /usr/local/mysql/support-files/mysql.server /etc/rc.d/init.d/mysql<br/></span>

chmod 700 /etc/init.d/mysql
chkconfig --add mysqld
chkconfig --level 2345 mysqld on
chown mysql:mysql -R /usr/local/mysql/

service mysqld status

ln  -s /usr/local/mysql/bin/mysql  /usr/bin  （mysql的安装路径）

登录mysql,执行下面命令
mysql -uroot -p 
密码为空直接回车,运行以下两条命令
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'duan' with grant option;
Flush privileges;

exit

./mysqladmin -h 127.0.0.1 -P3306 -uroot password 'duan'exit