Mysql installation method in CentOS
Mysql deployment document
Operating system: CentOS Linux release 7.4.1708
Kernel version: 3.10.0
# Manual installation
1> Mysql-5.5.54 -linux2.6-x86_64.tar.gz Upload to the CentOS server/tmp directory
2> Unzip the compressed package to /usr/local/
[root@localhost local]# tar -zxvf /tmp/mysql-5.5.54-linux2.6-x86_64.tar.gz -C /usr/local/
3> Set up soft connection
[root@localhost local]# ln -s mysql-5.5.54-linux2.6-x86_64/ mysql
4> Add user group and user
[root@localhost local]# groupadd -r mysql [root@localhost local]# useradd -g mysql -r -s /sbin/nologin mysql
5> Give/ usr/local/mysql/*Permissions
##
[root@localhost local]# chown -R mysql.mysql /usr/local/mysql/*
[root@localhost local]# mkdir –p /data/mydata [root@localhost local]# chown -R mysql.mysql /data/mydata
[root@localhost local]# cd /usr/local/mysql [root@localhost local]# scripts/mysql_install_db --datadir=/data/mydata --user=mysql
##
[root@localhost local]# chown -R root /usr/local/mysql/*
9> Join automatic startup
[root@localhost local]# cp -a mysql/support-files/mysql.server /etc/rc.d/init.d/mysqld [root@localhost local]# chkconfig --add mysqld
10> Modify the configuration file
[root@localhost local]# cp -a /usr/local/mysql/support-files/my-large.cnf /etc/my.cnf [root@localhost local]# vi /data/mydata
Add datadir = /data/mydata under the [mysqld] field thread_concurrency = 2 times the number of physical CPU cores
Save, exit /etc/my.cnf
##11> Start the mysql service
##
[root@localhost local]# /etc/rc.d/init.d/mysqld start
*Log in to mysql first
[root@localhost local]# mysql -uroot -hlocalhost -p Enter password:
(press Enter directly)
*Set password, Assume the password is: zz2014info
##
mysql> SET PASSWORD FOR 'root'@'localhost'=PASSWORD('zz2014info');
*If it is displayed as follows, it means the password is created successfully
Query OK, 0 rows affected (0.14 sec)
13> Create mysql Example
*Create a mysql instance, such as logincenter
********************************* *******************************
******************** The development side uses lowercase letters ******************************
**************** ****Ignore case configurable******************************
************ ***************************************************
mysql> CREATE DATABASE logincenter； Query OK, 1 row affected (0.01 sec)
*Check whether the instance is created successfully
mysql> SHOW DATABASES;+--------------------+ | Database | +--------------------+ | information_schema | | logincenter | | mysql | | performance_schema | | test | +--------------------+
14> Add the mysql command to the environment variable
[root@localhost local]# echo "PATH=$PATH:/usr/local/mysql/bin" > /etc/profile.d/mysql.sh[root@localhost local]# echo "export PATH" >> /etc/profile.d/mysql.sh[root@localhost local]# source /etc/profile
15> Import .sql statement script (take logincenter.sql as an example)
[root@localhost local]# mysql -uroot -pzz2014info logincenter < /tmp/logincenter.sql
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