#MySQL Profile
(1) MySQL industry mainstream version
- 5.6
- 5.7
(2) Enterprise Edition Select
- Oracle: MySQL official version
- RedHat: MariaDB
- Percona: PerconaDB
(3) Select version
- generally choose 5.6 or 5.7
- GA
--6--12 month product version
# Download MySQL
- From the official website: https://dev.mysql.com/downloads/
- Select this article: https://cdn.mysql.com/archives/mysql-5.7/mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz
#MySQL installation
- OS version
[root@CentOS-Docker ~]# uname -a Linux CentOS-Docker 3.10.0-957.27.2.el7.x86_64 #1 SMP Mon Jul 29 17:46:05 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
- remove the existing database (if so, to avoid affecting each other)
yum remove mariadb-libs-5.5.60-1.el7_5.x86_64
- the necessary installation package
yum install -y libaio-devel ncurses-devel
- Create an installation directory
mkdir -p /app/
- unpack rename &
mv mysql-5.7.20-linux-glibc2.12-x86_64 mysql
- modify environment variables
vim / etc / Profile # added at the end Export the PATH = / App / MySQL / bin: $ the PATH # into force source / etc / profile
- New user mysql
useradd mysql
- create the relevant directory and modify permissions
mkdir /data/mysql -p chown -R mysql:mysql /app/* chown -R mysql:mysql /data/*
- initialize the database
# Clear the data / data / mysql in, the data will complain RM -rf / data / mysql / * # temporary password initialization data and administrators mysqld --initialize --user = mysql --basedir = / app / mysql - = -datadir / the Data / MySQL # no [ERROR] that success # 5.7 new features important Note: # 5.7 from the beginning, MySQL added a new security password: # 1 after initialization is complete, it will generate a temporary password ( displayed on the screen, and will remember to log a) # 2 password complexity: chaos character combinations. # 3 password expiration time of 180 days. # initialization data, initialize the administrator's password is blank mysqld --initialize-insecure - -user = mysql --basedir = / app / mysql --datadir = / data / mysql
- edit the configuration file
vim /etc/my.cnf [mysqld] user=mysql basedir=/app/mysql datadir=/data/mysql server_id=6 port=3306 socket=/tmp/mysql.sock [mysql] socket=/tmp/mysql.sock prompt=3306 [\\d]>
- Start MySQL
cd /app/mysql/support-files ./mysql.server start
- Use systemd management mysql
vim /etc/systemd/system/mysqld.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=/app/mysql/bin/mysqld --defaults-file=/etc/my.cnf #systemctl start/stop/restart/status mysqld
- manage passwords
mysqladmin -uroot -p password 123
- Query
select user,authentication_string,host from mysql.user;