一.MySQL5.6与MySQL5.7安装的区别
1、cmake的时候加入了bostorg
2、初始化时 使用mysqld --initialize 替代mysql_install_db，其它参数没有变化：--user= --basedir= --datadir=
3、--initialize会生成一个临时密码
4、还可以用另外一个参数--initialize-insecure
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安装步骤和5.6几乎一致，这里不在详细记录，只给出必要的步骤！
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#依赖
yum install -y gcc gcc-c++ automake autoconf
yum -y install make cmake bison-devel ncurses-devel libaio-devel
wget https://dl.bintray.com/boostorg/release/1.65.1/source/boost_1_65_1.tar.gz
tar xf boost_1_65_1.tar.gz -C /usr/local/
#预编译
cmake . -DCMAKE_INSTALL_PREFIX=/application/mysql-5.7.17
-DMYSQL_DATADIR=/application/mysql-5.7.17/data
-DMYSQL_UNIX_ADDR=/application/mysql-5.7.17/tmp/mysql.sock
-DDOWNLOAD_BOOST=1
-DWITH_BOOST=/usr/local/boost_1_65_1/boost
-DSYSCONFDIR=/etc
-DDEFAULT_CHARSET=utf8mb4
-DDEFAULT_COLLATION=utf8mb4_general_ci
-DWITH_EXTRA_CHARSETS=all
-DWITH_INNOBASE_STORAGE_ENGINE=1
-DWITH_FEDERATED_STORAGE_ENGINE=1
-DWITH_BLACKHOLE_STORAGE_ENGINE=1
-DWITHOUT_EXAMPLE_STORAGE_ENGINE=1
-DWITH_MYISAM_STORAGE_ENGINE=1
-DWITH_ZLIB=bundled
-DWITH_SSL=bundled
-DENABLED_LOCAL_INFILE=1
-DWITH_EMBEDDED_SERVER=1
-DENABLE_DOWNLOADS=1
-DWITH_DEBUG=0
#编译 && 安装
内存必须 > 2GB
make && make install
#授权
chown -R mysql.mysql /application/mysql-5.7.17
#初始化
/application/mysql-5.7.17/bin/mysqld --initialize --user=mysql --basedir=/application/mysql-5.7.17 --datadir=/application/mysql-5.7.17/data
记录初始密码（一定要记录!!!）
#拷贝配置文件和启动文件
cp /application/mysql-5.7.17/support-files/my-default.cnf /etc/my.cnf
cp /application/mysql-5.7.17/support-files/mysql.server /etc/init.d/mysqld
#启动
/etc/init.d/mysqld start