安装路径：/application/mysql-5.7.18

1.前期准备

mysql依赖

libaio

yum install -y libaio

创建用户mysql，以该用户的身份执行mysql

useradd -s /bin/false -M mysql

下载mysql二进制包并解压

cd /tools

wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz

tar -zxf mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz -C /application/

切换到/application目录，将mysql文件夹名改短,给mysql目录做一个软链接

cd /application/

mv mysql-5.7.18-linux-glibc2.5-x86_64/ mysql-5.7.18

ln -s mysql-5.7.18/ mysql

在mysql目录下创建mysql-files，该文件夹权限为750，递归设置mysql目录的所属组和所属用户

mkdir mysql/mysql-files

chmod 750 mysql/mysql-files

chown -R mysql:mysql mysql-5.7.18/

2.mysql目录内操作

cd mysql

初始化数据库

会在mysql目录内生成一个data目录，存放数据库的目录

bin/mysqld --initialize --user=mysql --basedir=/application/mysql --datadir=/application/mysql/data

返回结果最后一行的末尾有随机密码，我的记下来：wa0I:1w?V--a

2017-04-28T02:49:00.853710Z 1 [Note] A temporary password is generated for root@localhost: wa0I:1w?V--a

想设置默认密码为空则将--initialize选项替换为--initialize-insecure选项

bin/mysqld --initialize-insecure --user=mysql --basedir=/application/mysql --datadir=/application/mysql/data

安装ssl

bin/mysql_ssl_rsa_setup --datadir /application/mysql/data/

指定data目录的路径

更改所属用户和组

chown -R root .

chown -R mysql data mysql-files

除了mysql目录下的data目录和mysql-files目录所属用户不变，其他所有文件的所属用户改为root

修改配置文件

sed -i 's/^datadir=/var/lib/mysql/datadir=/application/mysql/data/g' /etc/my.cnf

sed -i 's/^socket=/var/lib/mysql/mysql.sock/socket=/tmp/mysql.sock/g' /etc/my.cnf

sed -i 's/^log-error=/var/log/mariadb/mariadb.log/log-error=/application/mysql/data/err.log/g' /etc/my.cnf

sed -i 's/^pid-file=/var/run/mariadb/mariadb.pid/pid-file=/application/mysql/data/mysql.pid/g' /etc/my.cnf

等价于:

vi /etc/my.cnf

datadir=/application/mysql/data

socket=/tmp/mysql.sock

log-error=/application/mysql/data/err.log

pid-file=/application/mysql/data/mysql.pid

/etc/my.cnf Content:

[mysqld]

datadir=/application/mysql/data

socket=/tmp/mysql.sock

# Disabling symbolic-links is recommended to prevent assorted security risks

symbolic-links=0

# Settings user and group are ignored when systemd is used.

# If you need to run mysqld under a different user or group,

# customize your systemd unit file for mariadb according to the

# instructions in http://fedoraproject.org/wiki/Systemd

[mysqld_safe]

log-error=/application/mysql/data/err.log

pid-file=/application/mysql/data/mysql.pid

#

# include all files from the config directory

#

!includedir /etc/my.cnf.d

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