版权声明:声明:本博客欢迎转发,但请保留原作者信息!本站文章皆基于公开来源信息,仅代表作者个人观点 https://blog.csdn.net/wylfengyujiancheng/article/details/51334875
作者:【吴业亮】云计算开发工程师
博客:http://blog.csdn.net/wylfengyujiancheng
在openstack集群非常大的情况下mysql5.5的最大连接数就成了问题(1040,Too many connections),dashboard界面操作经常因为连接不 上数据库报各种错误。经过试验将最大连接数改为2000,超时时间改为300s,问题还依旧。
针对这种问题,Percona 推出了新版本Percona 5.7.10-1
具体参见
https://www.percona.com/doc/percona-server/5.7/reliability/log_connection_error.html
下面具体介绍Percona 5.7.10-1安装方法
1、安装数据库源
1
2、安装Percona 5.7
1
3、启动数据库并设置开机启动
1
2
4、初始化数据库
[root@localhost Percona-db]# mysql_secure_installation
Securing the MySQL server deployment.
Enter password for user root:
The existing password for the user account root has expired. Please set a new password.
New password:
Re-enter new password:
The ‘validate_password’ plugin is installed on the server.
The subsequent steps will run with the existing configuration
of the plugin.
Using existing password for root.
Estimated strength of the password: 100
Change the password for root ? ((Press y|Y for Yes, any other key for No) : y
New password:
Re-enter new password:
Estimated strength of the password: 100
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y
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? (Press y|Y for Yes, any other key for No) : y
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? (Press y|Y for Yes, any other key for No) : y
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? (Press y|Y for Yes, any other key for No) : y
Dropping test database…
Success.
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? (Press y|Y for Yes, any other key for No) : y
Success.
All done!
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
注意:Percona 5.7安装完默认会产生个随机的密码,存在日志中。这个问题曾困扰我一下午。
查看方法:
1
5、测试
[root@localhost ~]# mysql -uroot -pChangeme_123
mysql: [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 12
Server version: 5.7.11-4 Percona Server (GPL), Release 4, Revision 5c940e1
Copyright © 2009-2016 Percona LLC and/or its affiliates
Copyright © 2000, 2016, 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>
mysql>
mysql>
作者:二进制-程序猿
来源:CSDN
原文:https://blog.csdn.net/wylfengyujiancheng/article/details/51334875
版权声明:本文为博主原创文章,转载请附上博文链接!