一.环境
ubuntu18.10（CentOS7由于gcc版本过低已经无法通过编译)
二.准备工作
1.安装依赖
apt-get install -y gcc g++ cmake build-essential bison libncurses5-dev openssl libssl-dev
2.下载源码包
wget https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-boost-8.0.15.tar.gz (此版本带有boost)
3.创建mysql用户
groupadd mysql
useradd -r -g mysql -s /bin/false mysql
4.创建安装目录和数据目录
mkdir -p /usr/local/mysql
mkdir -p /data/mysql
三.安装MySQL8.0.15
1.解压源码包
tar -zxvf mysql-boost-8.0.15.tar.gz -C /usr/local/src
2.编译&安装
cd /usr/local/src/mysql-8.0.15
cmake . -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DMYSQL_DATADIR=/usr/local/mysql/data -DSYSCONFDIR=/etc -DMYSQL_TCP_PORT=3306 -DWITH_BOOST=/usr/local/src/mysql-8.0.15/boost -DFORCE_INSOURCE_BUILD=1
make && make install
3.配置my.cnf文件
文件参数很多，这里就不一一列举
vim /etc/my.cnf
[mysqld]
server-id=1
port=3306
basedir=/usr/local/mysql
datadir=/data/mysql
socket=/data/mysql/mysql.sock
max_allowed_packet=1G
net_read_timeout=300
net_write_timeout=600
[client]
socket=/data/mysql/mysql.sock
##请根据实际情况添加参数
4.目录权限修改
chown -R mysql:mysql /usr/local/mysql
chown -R mysql:mysql /data/mysql
chmod 755 /usr/local/mysql -R
chmod 755 /data/mysql -R
5.初始化
cd /usr/local/mysql
bin/mysqld --initialize --user=mysql --datadir=/data/mysql/
bin/mysql_ssl_rsa_setup
6.启动mysql
bin/mysqld_safe --user=mysql &
7.修改账号密码
bin/mysql -uroot -p
mysql> alter user ‘root‘@‘localhost‘ identified by "123456";
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.00 sec)
##添加远程连接账号
mysql> create user root@‘%‘ identified by ‘123456‘;
Query OK, 0 rows affected (0.08 sec)
mysql> grant all privileges on *.* to root@‘%‘;
Query OK, 0 rows affected (0.04 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)
8.创建软链接(非必要)
ln -s /usr/local/mysql/bin/* /usr/local/bin/
mysql -h 127.0.0.1 -P 3306 -uroot -p123456 -e "select version();"
mysql: [Warning] Using a password on the command line interface can be insecure.
+-----------+
| version() |
+-----------+
| 8.0.15 |
+-----------+
9.添加到启动(非必要)
cp support-files/mysql.server /etc/init.d/mysqld
/lib/systemd/systemd-sysv-install enable mysqld
原文：https://www.cnblogs.com/small-wei/p/10826198.html