linux mysql 安装

操作系统	Centos 7.2以上版本

操作系统 centos 7.2以上版本

mysql 版本 mysql-5.7.23-el7-x86_64.tar.gz

1.1 安装准备

1、创建安装文件存放目录。

mkdir /usr/local/software

2、将安装文件上传至/usr/local/software

3、

1.2 MYSQL安装

1、使用root用户分别登录机器，分别按照安装方式在三台机器上进行安装。

2、创建MYSQL安装目录

cd /usr/local/software

3、进入安装文件存放目录。

cd /usr/local/software

4、解压MYSQL安装包。

tar zxvf mysql-5.7.23-el7-x86_64.tar.gz

5、将解压文件拷贝至/usr/local/mysql目录中。

cd mysql-5.7.23-el7-x86_64

cp -rf * /usr/local/mysql

6、添加用户和组

groupadd mysql

useradd -r -g mysql mysql

7、手动创建MySql data和日志目录

mkdir /usr/local/mysql/data

mkdir /usr/local/mysql/log

8、目录权限设置

chown -R mysql:mysql /usr/local/mysql/data

chown -R mysql:mysql /usr/local/mysql/log

9、配置my.cnf文件

vi /etc/my.cnf

#文件调整为如下（server_id 配置项，三台机器不可设置为一样，可以根据ip地址最后一组数字进行设置）：

[client]

port = 3306

socket = /tmp/mysql.sock

[mysqld]

server_id=128

port = 3306

user = mysql

socket = /tmp/mysql.sock

basedir = /usr/local/mysql

datadir = /usr/local/mysql/data

pid-file = /usr/local/mysql/data/mysql.pid

max_connections = 1000

max_connect_errors = 1000

table_open_cache = 1024

max_allowed_packet = 128M

open_files_limit = 65535

#####====================================[innodb]==============================

innodb_buffer_pool_size = 1024M

innodb_file_per_table = 1

innodb_write_io_threads = 4

innodb_read_io_threads = 4

innodb_purge_threads = 2

innodb_flush_log_at_trx_commit = 1

innodb_log_file_size = 512M

innodb_log_files_in_group = 2

innodb_log_buffer_size = 16M

innodb_max_dirty_pages_pct = 80

innodb_lock_wait_timeout = 30

innodb_data_file_path=ibdata1:1024M:autoextend

#####====================================[log]==============================

log_error = /usr/local/mysql/log/mysql-error.log

slow_query_log = 1

long_query_time = 1

slow_query_log_file = /usr/local/mysql/log/mysql-slow.log

sql_mode=ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION

10、配置环境变量

vi /etc/profile

export PATH=$PATH:/usr/local/mysql/bin

source /etc/profile

11、配置启动文件

ln –s /usr/local/mysql/bin/mysql /usr/bin/mysql

12、系统默认启动

touch /usr/lib/systemd/system/mysql.service

[Unit]

Description=MySQL Server

Documentation=man:mysqld(8) Documentation=http://dev.mysql.com/doc/refman/en/using-systemd.html After=network.target

After=syslog.target

[Install]

WantedBy=multi-user.target

[Service]

User=mysql

Group=mysql

ExecStart=/usr/local/mysql/bin/mysqld --defaults-file=/etc/my.cnf

LimitNOFILE = 5000

#Restart=on-failure

#RestartPreventExitStatus=1

#PrivateTmp=false

13、初始化数据库

mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --innodb_undo_tablespaces=3 --explicit_defaults_for_timestamp

使开机启动文件生效

systemctl daemon-reload

启动服务

systemctl start mysql

14、修改密码和远程访问权限

查询mysql 数据库root用户的密码

more /usr/local/mysql/log/mysql-error.log

密码在mysql-error.log文件中的

登录mysql：

mysql -u root -p

输入密码后，会提示修改当前密码，新密码替换以下标红处

SET PASSWORD = PASSWORD('root1234');

update mysql.user set authentication_string=password('root1234') where user='root';

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root1234';

FLUSH PRIVILEGES;

15、创建数据库、用户名和密码

Create database uprofiledb;

Create user 'uprofile' @'%' IDENTIFIED BY 'uprofile';

GRANT ALL PRIVILEGES ON uprofiledb.* TO 'uprofile'@'%' IDENTIFIED BY 'uprofile';

FLUSH PRIVILEGES;