阿里云服务器ECS安装mysql
linux系统安装mysql数据库
1、首先关闭linux的防火墙，执行命令
chkconfig iptables off
下载mysql
https://dev.mysql.com/downloads/mysql/5.6.html#downloads
1、使用谷歌浏览器，蜗牛般的速度
从mysql官网上下载自己适合的mysql版本https://dev.mysql.com/downloads/mysql/5.6.html#downloads，进入mysql官网，依次点击
2、使用迅雷下载，速度飞起
安装迅雷9，输入https://dev.mysql.com/downloads/mysql/5.6.html#downloads
3、下载后的mysql文件
mysql-5.6.45-linux-glibc2.12-x86_64.tar.gz
将下载好的mysql压缩文件放置在linux的/usr/local文件夹下，解压该压缩文件
tar -zxvf mysql-5.6.45-linux-glibc2.12-x86_64.tar.gz
将解压后的文件重命名为mysql
mv mysql-5.6.45-linux-glibc2.12-x86_64.tar.gz
4、创建mysql用户组及用户
groupadd mysql
useradd -r -g mysql mysql
5、进入到mysql目录，执行添加MySQL配置的操作
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
6、编辑/etc/my.cnf文件；
vi /etc/my.cnf
在my.cnf文件中添加或者修改相关配置，更改完成后保存退出
| # For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html # *** DO NOT EDIT THIS FILE. It's a template which will be copied to the # *** default location during install, and will be replaced if you # *** upgrade to a newer version of MySQL.
[mysqld]
# Remove leading # and set to the amount of RAM for the most important data # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. # innodb_buffer_pool_size = 128M
# Remove leading # to turn on a very important data integrity option: logging # changes to the binary log between backups. # log_bin
# These are commonly set, remove the # and set as required. basedir = /usr/local/mysql datadir = /usr/local/mysql/data port = 3306 # server_id = ..... socket = /tmp/mysql.sock character-set-server = utf8 skip-name-resolve log-err = /usr/local/mysql/data/error.log pid-file = /usr/local/mysql/data/mysql.pid
# Remove leading # to set options mainly useful for reporting servers. # The server defaults are faster for transactions and fast SELECTs. # Adjust sizes as needed, experiment to find the optimal values. # join_buffer_size = 128M # sort_buffer_size = 2M # read_rnd_buffer_size = 2M
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES |
7、在mysql当前目录下设定目录的访问权限（注意后面的小点，表示当前目录）
chown -R mysql .
chgrp -R mysql .
scripts/mysql_install_db --user=mysql
chown -R root .
chown -R mysql data
8、初始化数据（在mysql/bin或者mysql/scripts下有个 mysql_install_db 可执行文件初始化数据库），进入mysql/bin或者mysql/scripts目录下，执行下面命令
./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
9、启动mysql，进入/usr/local/mysql/bin目录，执行下面命令
./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.
10、设置开机启动，新开启shell中断后，进入mysql目录，执行下面命令
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
chmod 700 /etc/init.d/mysql
chkconfig --add mysqld
chkconfig --level 2345 mysqld on
chown mysql:mysql -R /usr/local/mysql/
重启linux
reboot
查看mysql状态
service mysqld status
11、添加远程访问权限
（1）、添加mysql命令
ln -s /usr/local/mysql/bin/mysql /usr/bin （mysql的安装路径）
（2）、更改访问权限
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 '123456' with grant option;
Flush privileges;
%：所有ip
退出mysql
exit
重启linux,就完成了
reboot
注：本机访问mysql，root账户默认是没有密码的，端口号默认3306，如果需要修改root账户密码，在/usr/local/mysql/bin目录下，执行下面命令
./mysqladmin -h 127.0.0.1 -P3306 -uroot password '123456'exit
阿里云配置安全组
本地远程配置
安装mysql(FAQ)
[root@kinbridge-PC mysql]# scripts/mysql_install_db --user=mysql
FATAL ERROR: please install the following Perl modules before executing scripts/mysql_install_db:
Data::Dumper
原因:缺少perl模块中的Data::Dumper
安装autoconf库(此包安装时会安装Data:Dumper模块)
yum -y install autoconf
ok
[root@kinbridge-PC mysql]# scripts/mysql_install_db --user=mysql
Installing MySQL system tables..../bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory
[root@kinbridge-PC mysql]# yum install -y libaio //安装后在初始化就OK了