一、下载mysql二进制安装包
mysql官网:
https://dev.mysql.com/downloads/mysql/
由于国内网络问题,个人建议使用国内开源镜像站下载:
http://mirrors.163.com/mysql/Downloads/MySQL-8.0/ http://mirrors.sohu.com/mysql/MySQL-8.0/ http://mirrors.ustc.edu.cn/mysql-ftp/Downloads/MySQL-8.0/
下载:mysql-8.0.13-linux-glibc2.12-x86_64.tar.xz
二、mysql依赖于libaio
yum search libaio yum install libaio
三、解压和重命名
我们默认把mysql8安装到/data/mysql8目录下,这个目录可以随意指定。
tar xf mysql-8.0.13-linux-glibc2.12-x86_64.tar.xz mv mysql-8.0.13-linux-glibc2.12-x86_64 /data/mysql8
四、创建mysql用户名和用户组
useradd -s /sbin/nologin -M mysql
五、把默认/etc/my.cnf重命名或删除
centos7默认会有一个/etc/my.cnf文件,为了不影响安装,可以直接删除或重命名。
mv /etc/my.cnf /etc/my.cnf.bak
或
rm /etc/my.cnf
六、创建my.cnf文件
cd /data/mysql8 vi my.cnf
填写如下内容:
[mysqld] port = 3306 basedir = /data/mysql8 datadir = /data/mysql8/data max_connections = 1024 character-set-server = utf8 default-storage-engine = INNODB server_id = 1 socket = /data/mysql8/mysql.sock pid-file = /data/mysql8/mysql.pid slow_query_log = 1 slow_query_log_file = /data/mysql8/log/mysql-slow.log long_query_time = 10 log-error = /data/mysql8/log/mysql-err.log log-bin = /data/mysql8/log/mysql-bin user = mysql default_authentication_plugin = mysql_native_password sql_mode = NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES [mysql] default-character-set = utf8 [client] port = 3306 socket = /data/mysql8/mysql.sock default-character-set = utf8
创建一个软链接
ln -s /data/mysql8/my.cnf /etc/my.cnf
七、创建目录,修改目录所有者,初始化mysql数据库
mkdir /data/mysql8/log mkdir /data/mysql8/data chown -R mysql.mysql /data/mysql8 /data/mysql8/bin/mysqld --initialize --user=mysql --basedir=/data/mysql8 --datadir=/data/mysql8/data
八、把启动文件复制到/etc/init.d/目录下
cp support-files/mysql.server /etc/init.d/mysql vi /etc/init.d/mysql
修改46,47行的basedir和datadir
basedir= /data/mysql8 datadir= /data/mysql8/data
修改63-82行,把路径改成自已的mysql安装路径
mysqld_pid_file_path= if test -z "$basedir" then basedir=/data/mysql8 bindir=/data/mysql8/bin if test -z "$datadir" then datadir=/data/mysql8/data fi sbindir=/data/mysql8/bin libexecdir=/data/mysql8/bin else bindir="$basedir/bin" if test -z "$datadir" then datadir="$basedir/data" fi sbindir="$basedir/sbin" libexecdir="$basedir/libexec" fi
九、启动mysql服务
service mysql start
十、登陆mysql,修改root用户密码
mysql初始化时会自动生成一个密码,可以在log-error指定的错误日志中查看
mysql -u root -p ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '新密码'; flush privileges;
十一、创建可远程连接的用户
create user '用户名'@'主机' identified with mysql_native_password by '密码'; grant all privileges on *.* to '用户名'@'主机'; flush privileges;
十二、添加环境变量
vi /etc/profile
添加如下内容:
export PATH=$PATH:/data/mysql8/bin
使配置生效
source /etc/profile