centos7安装mysql-5.7.28

运行MapReduce任务

mysql是我们最常用的开源的关系型数据库,mysql不同版本有时候安装的方式也不尽相同,下面以mysql5.7.28版本为例梳理一下安装细节:

1.下载mysql-5.7.28,URL:https://downloads.mysql.com/archives/community/ 我这里下载的是64位版本

centos7安装mysql-5.7.28

 下载后文件为:mysql-5.7.28-linux-glibc2.12-x86_64.tar.gz

 

2. 卸载自带的mariadb和mysql

检查是否安装了mariadb和mysql,有时候默认安装了

rpm -qa | grep mariadb
rpm -qa | grep mysql

如果没有,就可以安装mysql,如果有,需要先卸载(remove后为上面命令查询到的内容,全文件名,我这里没有,没法展示)

yum remove mariadb-xxx

 

3.解压文件,修改目录名方便配置

tar -zxvf mysql-5.7.28-linux-glibc2.12-x86_64.tar.gz -C /opt/soft/
cd /opt/soft
mv mysql-5.7.28-linux-glibc2.12-x86_64 mysql-5.7.28

 

4.在/usr/local/目录下创建到/opt/soft/mysql-5.7.28的软链接

cd /usr/local
ln -s /opt/soft/mysql-5.7.28 mysql

centos7安装mysql-5.7.28

 

5.添加mysql用户,修改mysql目录权限,并用此用户执行应用

useradd -s /bin/false -M mysql
cd /opt/soft
chown -R mysql:mysql mysql-5.7.28

 

6.拷贝配置文件,将mysql的配置文件拷贝为/etc/目录下的my.cnf,并修改配置文件

centos7安装mysql-5.7.28

vim /etc/my.cnf

[mysqld] # binlog 配置 log-bin=/usr/local/mysql/logs/mysql-bin.log expire-logs-days=14 max-binlog-size=500M server-id=1 # GENERAL basedir=/usr/local/mysql datadir=/usr/local/mysql/data socket=/usr/local/mysql/mysql.sock user=mysql default-storage-engine=InnoDB character-set-server=utf8
lower_case_table_names = 1
explicit_defaults_for_timestamp=true [mysqld_safe] log-error=/usr/local/mysql/mysql-error.log pid-file=/usr/local/mysql/mysqld.pid [client] socket=/usr/local/mysql/mysql.sock [mysql] default-character-set=utf8 socket=/usr/local/mysql/mysql.sock

centos7安装mysql-5.7.28

 

7.安装mysql,进入mysql目录执行以下命令

cd /opt/soft/mysql-5.7.28
bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data

如果出现如下错误,说明需要安装依赖包:

centos7安装mysql-5.7.28

 安装autoconf依赖包:

yum -y install autoconf

再次执行脚本

如果出现以下错误,说明在my.cnf中指定的binlog配置文件的logs文件夹不存在:

centos7安装mysql-5.7.28

 在/usr/local/mysql/下创建logs文件夹就行了,并改为mysql用户

centos7安装mysql-5.7.28

再次执行脚本

android之Activity的创建与关闭

出现以下信息,代表成功,要保存一下密码,

centos7安装mysql-5.7.28

 

8.拷贝启动程序,将mysql的启动程序拷贝到/etc/init.d/目录下

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

centos7安装mysql-5.7.28

 

 9.安装完,启动mysql服务

service mysqld start

如果出现如下错误:

[root@s144 support-files]# service mysqld start
Starting MySQL.2020-01-31T23:14:27.412533Z mysqld_safe error: log-error set to '/usr/local/mysql/mysql-error.log', however file don't exists. Create writable for user 'mysql'.
 ERROR! The server quit without updating PID file (/usr/local/mysql/data/s144.pid).

说明mysql-error.log不存在,手动去创建,并修改权限

cd /opt/soft/mysql-5.7.28
touch mysql-error.log
chown mysql:mysql mysql-error.log

centos7安装mysql-5.7.28

 出现SUCCESS,说明启动成功

 centos7安装mysql-5.7.28

 

10.配置环境变量,编辑/etc/profile,方便在任何地方用mysql命令

centos7安装mysql-5.7.28

vim /etc/profile

#mysql
export MYSQL_HOME=/usr/local/mysql
export PATH=$PATH:$MYSQL_HOME/bin

centos7安装mysql-5.7.28

别忘记重新编译  /etc/profile

source /etc/profile

 

11.登录mysql,修改密码

首次登录没有密码,提示输入密码时,输入第7步安装时生成的密码:p5j2jfX7am.h

mysql -uroot -p

centos7安装mysql-5.7.28

 这里要先使用alter user重置密码,不然会报错,我这里 修改mysql root用户密码 为  111111 :

mysql> alter user 'root'@'localhost' identified by '111111';
mysql> flush privileges;

centos7安装mysql-5.7.28

 至此本机登录密码修改完成,若是想让其他机器访问,需要配置远程访问:

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '111111' WITH GRANT OPTION;

使用远程工具测试一下:

centos7安装mysql-5.7.28

  至此搭建mysql-5.7.28版本就完成了

 

12.一些常用命令 

service mysqld start     #启动
service mysqld stop        #关闭    
service mysqld restart    #重启    
service mysqld status     #查看运行状态 

 

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