在阿里云的CentOS环境中安装配置MySQL的教程(2)-木庄网络博客

安装完MySQL后，需要进行一些基础配置工作：

#######安装成功后，将其加入开机启动
[root@typecodes ~]# systemctl enable mysqld

#######启动mysql服务进程
[root@typecodes ~]# systemctl start mysqld

#######配置mysql（设置密码等）
[root@typecodes ~]# mysql_secure_installation

NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL
  SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY!

In order to log into MySQL to secure it, we'll need the current
password for the root user. If you've just installed MySQL, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.

Enter current password for root (enter for none): 
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MySQL
root user without the proper authorisation.

Set root password? [Y/n] y     [设置root用户密码]
New password: 
Re-enter new password: 
Password updated successfully!
Reloading privilege tables..
 ... Success!


By default, a MySQL installation has an anonymous user, allowing anyone
to log into MySQL without having to have a user account created for
them. This is intended only for testing, and to make the installation
go a bit smoother. You should remove them before moving into a
production environment.

Remove anonymous users? [Y/n] y     [删除匿名用户]
 ... Success!

Normally, root should only be allowed to connect from 'localhost'. This
ensures that someone cannot guess at the root password from the network.

Disallow root login remotely? [Y/n] y  [禁止root远程登录]
 ... Success!

By default, MySQL comes with a database named 'test' that anyone can
access. This is also intended only for testing, and should be removed
before moving into a production environment.

Remove test database and access to it? [Y/n] y   [删除test数据库]
 - Dropping test database...
ERROR 1008 (HY000) at line 1: Can't drop database 'test'; database doesn't exist
 ... Failed! Not critical, keep moving...
 - Removing privileges on test database...
 ... Success!

Reloading the privilege tables will ensure that all changes made so far
will take effect immediately.

Reload privilege tables now? [Y/n] y   [刷新权限]
 ... Success!




All done! If you've completed all of the above steps, your MySQL
installation should now be secure.

Thanks for using MySQL!


Cleaning up...

4.可能有效的MySQL配置优化
在原始配置文件 /etc/my.cnf 基础上，在 [mysqld] 节内增加配置参数。实际应用中，请按硬件及负载酌情修改。

#add by feng 120418 --------------------------
#skip-locking
skip-name-resolve
skip-external-locking
key_buffer_size = 256M
#table_cache = 3072
table_open_cache = 3072
read_buffer_size = 2M
read_rnd_buffer_size = 2M
sort_buffer_size = 2M
myisam_sort_buffer_size = 256M
thread_cache_size = 8
query_cache_size= 512M
query_cache_limit= 5M
tmp_table_size=1024M
max_heap_table_size=3000M
max_allowed_packet = 16M
innodb_buffer_pool_size = 512M
innodb_log_file_size = 512M
innodb_additional_mem_pool_size=512M
innodb_log_buffer_size=64M
max_connections=2000
max_user_connections=800
join_buffer_size = 8M
open_files_limit = 65535
#tmpdir=/dev/shm
max_connect_errors=1000
#add by feng 120418 end ---------------------

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