Example tutorial for installing mysql 5.7.18 under Linux using YUM

This article mainly introduces the detailed tutorial of using YUM to install mysql 5.7.18 under Linux(CentOS 7). It is very good and has reference For reference value, friends in need can refer to the

project that requires the use of MySQL. Since it was installed in a fool-proof manner under Windows in the past, there were basically no problems encountered. However, this time it is installed on the server. Since it is installed on Linux, I was not familiar with the installation software, so I took many detours and wasted a lot of time. Summarize it to avoid taking detours next time.

1. Various environments:

linux version: CentOS Linux release 7.2.1511 (core)

mysql version ：community sercer 5.7.18

The yum installation package used:

Red Hat Enterprise Linux 7 / Oracle Linux 7 (Architecture Independent), RPM Package  25.1K 
Download
(mysql57-community-release-el7-11.noarch.rpm)

2: Installation steps

I am first Download the installation package on Windows, and then import it to the server through xshell. Then install it according to the steps on the mysql official website. None of the tutorials are as reliable as those on the official website. I searched for many tutorials on the Internet, and each tutorial had a different installation method, which made me very depressed, and none of them were successful. Finally, the installation was successful through the tutorial on the official website.

2.1 Select the installation guide

2.2 Click Enter and select the universal binary version. Installing MySQL on Unix/Linux Using Generic Binaries

2.3 Just follow the above steps step by step.

shell> yum search libaio # search for info（Mysql安装需要以来libaio库，所以需要先安装libaio库）
shell> yum install libaio # install library
shell> groupadd mysql
shell> useradd -r -g mysql -s /bin/false mysql
shell> cd /usr/local
shell> tar zxvf /path/to/mysql-VERSION-OS.tar.gz
shell> ln -s full-path-to-mysql-VERSION-OS mysql
shell> cd mysql
shell> mkdir mysql-files
shell> chmod 750 mysql-files
shell> chown -R mysql .
shell> chgrp -R mysql .
shell> bin/mysql_install_db --user=mysql  # MySQL 5.7.5 （mysql5.7.5选择使用这个命令，如果你的mysql是5.7.6及以上，不需要执行这个命令）
shell> bin/mysqld --initialize --user=mysql # MySQL 5.7.6 and up
shell> bin/mysql_ssl_rsa_setup       # MySQL 5.7.6 and up
shell> chown -R root .
shell> chown -R mysql data mysql-files
shell> bin/mysqld_safe --user=mysql &
# Next command is optional
shell> cp support-files/mysql.server /etc/init.d/mysql.server

After performing all the above steps, the installation is over.

2.4 After the installation is completed, start the mysql service

[root@***** /]# cd ~ #这里有一个问题，不知道需要需要切换到 “~”目录，之前没有“~”，启动不成功，不确定是我sytemctl start mysqld.service命令输入错了还是别的原因。
[root@***** ~]# sytemctl start mysqld.service

Check whether the startup is successful

[root@***** ~]# sytemctl status mysqld.service

If there is this logo, the startup is successful

2.5 Obtain the installation information Temporary password, used to log in to mysql

grep'temporary
 password'/var/log/mysqld.log
2017-05-10T00:55:46.982233Z
 1 [Note] A temporary password is generated for root@localhost: 5C::+lMjqi+z

The temporary password in the red box is the temporary password.

2.5 Use temporary password to log in

[root@****** ~]# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.7.18

2.6 Change password

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'newpassword';
Query OK, 0 rows affected (0.00 sec)

Note: The latest mysql has high requirements for

security, the password must Contains special characters, uppercase and lowercase, and numbers. Otherwise, the change will not be successful and an error will be reported.

ERROR 1819 (HY000): Your password does not satisfy the

current policy requirements

The above is the editor’s introduction to using YUM in Linux (CentOS 7 ), I hope it will be helpful to you. If you have any questions, please leave me a message and I will reply to you in time.

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