Linux CentOS MySQL 5.7.18安装教程

1、新建用户组和用户

groupadd mysql
useradd mysql -g mysql

2、解压Mysql软件包

tar -zxvf /data/soft/mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz -C /data/webserver

3、重命名解压后的文件夹

cd /data/webserver
mv mysql-5.7.18-linux-glibc2.5-x86_64 mysql

4、创建数据目录

mkdir data
chown -R mysql:mysql /data/webserver/mysql/
chmod -R 755 /data/webserver/mysql/

5、初始化数据库

cd /data/webserver
./bin/mysqld --user=mysql --basedir=/data/webserver/mysql --datadir=/data/webserver/mysql/data --initialize

执行完命令后，会看到如下输出信息，注意记住root密码，后续步骤需要用到。



6、数据库配置-mysqld

cp /data/webserver/mysql/support-files/mysql.server /etc/init.d/mysqld
chmod 755 /etc/init.d/mysqld
vi /etc/init.d/mysqld

修改/etc/init.d/mysqld文件，正确设置basedir,datadir。



7、配置数据库-my.cnf

在/etc目录下创建my.cnf配置文件。

vi /etc/my.cnf

my.cnf配置文件内容如下：

# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html 
[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 = .....
basedir=/data/webserver/mysql
# datadir = .....
datadir=/data/webserver/mysql/data
# port = .....
# server_id = .....
# socket = .....
#socket=/tmp/mysql.sock

# 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
ft_min_word_len = 1
innodb_buffer_pool_size = 6G
innodb_buffer_pool_instances = 8
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1
innodb_lru_scan_depth = 2000
innodb_lock_wait_timeout = 5
innodb_io_capacity = 4000
innodb_io_capacity_max = 8000
innodb_flush_method = O_DIRECT
innodb_file_format = Barracuda
innodb_file_format_max = Barracuda
innodb_undo_logs = 128
innodb_flush_neighbors = 1
innodb_log_file_size = 4G
innodb_log_buffer_size = 16777216
innodb_purge_threads = 4
innodb_large_prefix = 1
innodb_thread_concurrency = 64
innodb_print_all_deadlocks = 1
innodb_strict_mode = 1
innodb_sort_buffer_size = 67108864

8、修改密码

/data/webserver/mysql/bin/mysql -uroot -p
SET PASSWORD = PASSWORD('123456');
grant all privileges on *.* to root@'%' identified by '123456';
flush privileges;

9、启动数据库

service mysqld start

mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz