linux下 安装mysql教程
安装环境:系统是 centos6.5
1、下载
下载地址:http://dev.mysql.com/downloads/mysql/5.6.html#downloads
下载版本:我这里选择的5.6.33,通用版,linux下64位
也可以直接复制64位的下载地址,通过命令下载:wget http://dev.mysql.com/get/Downloads/MySQL-5.6/mysql-5.6.33-linux-glibc2.5-x86_64.tar.gz
2、解压
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#解压 tar -zxvf mysql-5.6.33-linux-glibc2.5-x86_64. tar .gz #复制解压后的mysql目录 cp -r mysql-5.6.33-linux-glibc2.5-x86_64 /usr/local/mysql |
3、添加用户组和用户
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#添加用户组 groupadd mysql #添加用户mysql 到用户组mysql useradd -g mysql mysql |
4、安装
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cd /usr/local/mysql/
mkdir . /data/mysql chown -R mysql:mysql ./ . /scripts/mysql_install_db --user=mysql --datadir= /usr/local/mysql/data/mysql cp support-files /mysql .server /etc/init .d /mysqld chmod 755 /etc/init .d /mysqld cp support-files /my-default .cnf /etc/my .cnf #修改启动脚本 vi /etc/init .d /mysqld #修改项: basedir= /usr/local/mysql/ datadir= /usr/local/mysql/data/mysql #启动服务 service mysqld start #测试连接 . /mysql/bin/mysql -uroot #加入环境变量,编辑 /etc/profile,这样可以在任何地方用mysql命令了 export PATH=$PATH: /usr/local/mysql/bin
source /etc/profile #启动mysql service mysqld start #关闭mysql service mysqld stop #查看运行状态 service mysqld status |
5.1 sqlyog连接时,报1130错误,是由于没有给远程连接的用户权限问题
直接授权
GRANT ALL PRIVILEGES ON *.* TO ‘root’@'%’ IDENTIFIED BY ‘youpassword’ WITH GRANT OPTION;
FLUSH PRIVILEGES;
5.2 安装时的一些错误
-bash: ./scripts/mysql_install_db: /usr/bin/perl: bad interpreter: 没有那个文件或目录
解决: yum -y install perl perl-devel
Installing MySQL system tables..../bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory
解决:yum -y install libaio-devel
centos 7.2 报错
出现如下异常:
FATAL ERROR: please install the following Perl modules before executing /usr/bin/mysql_install_db:
Data::Dumper
解决方案:
]# yum install -y perl-Module-Install.noarch
5.3 设置root 密码
方法1: 用SET PASSWORD命令
mysql -u root
mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpass');
方法2:用mysqladmin
mysqladmin -u root password "newpass"
如果root已经设置过密码,采用如下方法
mysqladmin -u root password oldpass "newpass"
方法3: 用UPDATE直接编辑user表
mysql -u root
mysql> use mysql;
mysql> UPDATE user SET Password = PASSWORD('newpass') WHERE user = 'root';
mysql> FLUSH PRIVILEGES;
在丢失root密码的时候,可以这样
mysqld_safe --skip-grant-tables&
mysql -u root mysql
mysql> UPDATE user SET password=PASSWORD("new password") WHERE user='root';
mysql> FLUSH PRIVILEGES;
6.1 配置环境变量
vi + /etc/profile
export PATH=....:/usr/local/mysql/bin