安裝環(huán)境

系統(tǒng)版本：CentOS Linux release 7.5.1804 (Core)

Mysql版本：5.7.24

關(guān)閉防火墻并禁止開機(jī)自啟

systemctl stop firewalld.service
systemctl disable firewalld

關(guān)閉selinux

sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/sysconfig/selinux

重啟 reboot

安裝mysql

1、卸載自帶數(shù)據(jù)庫mariadb

rpm -qa | grep mariadb

rpm -e –nodeps mariadb-libs-5.5.56-2.el7.x86_64

2、規(guī)劃安裝路徑

basedir=/usr/local/mysql
datadir=/var/lib/mysql/data
socket=/var/lib/mysql/mysql.sock
log-error=/var/lib/mysql/mysql.log
pid-file=/var/lib/mysql/mysql.pid

3、上傳下載好的二進(jìn)制mysql包

注：方式不限，上傳即可！

4、解壓

tar xf mysql-5.7.24-el7-x86_64.tar

注：解壓文件有兩個(gè)，我們使用的是mysql-5.7.24-el7-x86_64.tar.gz

5、繼續(xù)解壓mysql

tar xf mysql-5.7.24-el7-x86_64.tar.gz

6、移動(dòng)解壓包并重命名為mysql

mv mysql-5.7.24-el7-x86_64 /usr/local/mysql

7、添加用戶和組

groupadd mysql

useradd -g mysql mysql

8、創(chuàng)建mysql配置文件

vi /etc/my.cnf

[mysqld]
user= mysql
port= 3306
socket= /tmp/mysql.sock
basedir=/usr/local/mysql
datadir=/var/lib/mysql/data
log-error=/var/lib/mysql/mysql.log
pid-file=/var/lib/mysql/mysql.pid
character-set-server=utf8
collation-server=utf8_bin

注：從5.7.18開始support-files就沒有my.cnf的模板了，所以要自己寫了配置文件！

9、創(chuàng)建數(shù)據(jù)目錄

mkdir -p /var/lib/mysql/data

10、初始化數(shù)據(jù)庫

1）設(shè)置權(quán)限

chown -R mysql:mysql /var/lib/mysql/

2）初始化數(shù)據(jù)庫

/usr/local/mysql/bin/mysqld –initialize –user=mysql –basedir=/usr/local/mysql –datadir=/var/lib/mysql/data/&

注：mysql5.7初始化后，會(huì)產(chǎn)生一個(gè) 臨時(shí)登錄密碼，在mysql.log日志中!

11、啟動(dòng)數(shù)據(jù)庫并修改密碼

1）啟動(dòng)數(shù)據(jù)庫

/usr/local/mysql/bin/mysql -u root –p

2）登錄數(shù)據(jù)庫

/usr/local/mysql/bin/mysql -u root –p

3）修改密碼

set password=password('123456');

flush privileges;

12、檢查mysql是否正常啟動(dòng)

1）查看mysql進(jìn)程是否正常

ps -ef | grep mysql

2）查看 3306 端口是否開啟

netstat -antupl | grep 3306

配置全局環(huán)境變量

1、添加環(huán)境變量

echo 'export PATH=/usr/local/mysql/bin:$PATH'>>/etc/profile

2、環(huán)境變量生效

source /etc/profile

添加mysql全局啟動(dòng)腳本

1、拷貝mysql啟動(dòng)服務(wù)腳本并重命名mysqld

cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld

2、給予啟動(dòng)腳本執(zhí)行權(quán)限

chmod +x /etc/init.d/mysqld

3、將mysql注冊為系統(tǒng)服務(wù)

chkconfig –add mysqld

4、設(shè)置mysql開機(jī)自啟

chkconfig –level 35 mysqld on