Mysql5.6的安装部署

以及可能需要安装的依赖包

yum install -y perl-Module-Install.noarch
yum -y install libaio

解压

tar xf mysql-5.6.40-linux-glibc2.12-x86_64.tar.gz
mv mysql-5.6.40-linux-glibc2.12-x86_64 /usr/local/mysql
useradd -M -s /sbin/nologin mysql
cd /usr/local/mysql
chown -R mysql:mysql ./

初始化数据库

./scripts/mysql_install_db --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --user=mysql

完了之后能看到这些小提示，小白建议看看，主要是一些后续的操作，比如修改密码，配置文件之类的

配置文件

这里要注意，初试完数据库后，会发现目录下多了个my.cnf，这个配置文件是跟/etc/my.cnf是不同的，正常来说，启动mysql时会依据/etc/下的配置文件启动，所以可以这样子

rm -rf /etc/my.cnf
cp ./my.cnf /etc/

修改配置文件，其实如果使用默认配置的话，大多数不用改，

vi /etc/my.cnf
[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 = .....
# datadir = .....
 port =3306
# server_id = .....
# socket = .....

# 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

添加服务

cp ./support-files/mysql.server /etc/init.d/ #忘记了改名，又重新改的名
mv /etc/init.d/mysql.server /etc/init.d/mysqld
chmod +x /etc/init.d/mysqld
chkconfig --add mysqld
ln -s /usr/local/mysql/bin/mysql /usr/bin

然后直接打开就好了

systemctl status mysqld
● mysqld.service - LSB: start and stop MySQL
   Loaded: loaded (/etc/rc.d/init.d/mysqld; bad; vendor preset: disabled)
   Active: inactive (dead)
     Docs: man:systemd-sysv-generator(8)

systemctl start mysqld

可以看一下端口及进程

netstat -lnpt
tcp6       0      0 :::3306                 :::*                    LISTEN      4821/mysqld

ps uax|grep mysql              #在这里我们可以看到pid的文件位置:--pid-file
root       4713  0.0  0.0 115532  1696 ?        S    17:29   0:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/usr/local/mysql/data --pid-file=/usr/local/mysql/data/localhost.localdomain.pid
mysql      4821  0.2 22.1 1368528 450588 ?      Sl   17:29   0:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=localhost.localdomain.err --pid-file=/usr/local/mysql/data/localhost.localdomain.pid

最后可以修改root密码

/usr/local/mysql/bin/mysqladmin -u root password '123456'
Warning: Using a password on the command line interface can be insecure. ps:这只是演示，生产中可不要学我哦！！
警告：在命令行界面上使用密码可能不安全。

mysql -uroot -p123456
Warning: Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.6.40 MySQL Community Server (GPL)

Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> quit
Bye