# 检查mariadb安装包
[root@wing ~]# rpm -qa | grep -i mysql
[root@wing ~]# rpm -qa | grep -i mariadb
mariadb-libs-5.5.50-1.el7_2.x86_64
# 卸载mariadb安装包
[root@wing ~]# rpm -e mariadb-libs-5.5.50-1.el7_2.x86_64
error: Failed dependencies:
 libmysqlclient.so.18()(64bit) is needed by (installed) postfix-2:2.10.1-6.el7.x86_64
 libmysqlclient.so.18(libmysqlclient_18)(64bit) is needed by (installed) postfix-2:2.10.1-6.el7.x86_64
[root@wing ~]# rpm -e mariadb-libs-5.5.50-1.el7_2.x86_64 postfix-2:2.10.1-6.el7.x86_64

yum install -y cmake make gcc gcc-c++

# 如MySQL安装目录为：/usr/local/mysql
mkdir -p /usr/local/mysql

tar -zxvf mysql-5.7.16.tar.gz

# 创建用户组
groupadd mysql
# 创建mysql用户，所属组为mysql
useradd -s /bin/bash -m -g mysql mysql

yum install -y ncurses-devel openssl-devel bison-devel libaio libaio-devel

# 该步骤可以省略，在cmake阶段添加参数-DDOWNLOAD_BOOST=1 -DWITH_BOOST=/usr/local/boost即可
# boost库安装
wget http://sourceforge.net/projects/boost/files/boost/1.59.0/boost_1_59_0.tar.gz
tar -zxvf boost_1_59_0.tar.gz -C /usr/local
mv /usr/local/boost_1_59_0 /usr/local/boost
cd /usr/local/boost
./bootstrap.sh
./b2 stage threading=multi link=shared
./b2 install threading=multi link=shared

mkdir -p /data/mysql/mysql3306/bin_log
mkdir -p /data/mysql/mysql3306/db_file
mkdir -p /data/mysql/mysql3306/innodb_log
mkdir -p /data/mysql/mysql3306/innodb_ts
mkdir -p /data/mysql/mysql3306/log
mkdir -p /data/mysql/mysql3306/relay_log
mkdir -p /data/mysql/mysql3306/tmpdir
mkdir -p /data/mysql/mysql3306/undo_log

chown -R mysql:mysql /data/mysql/mysql3306

# 修改MySQL配置文件所属用户与所属组
chown -R mysql:mysql my.cnf

# 切换到mysql-5.7.16源码目录下
cd /path/mysql-5.7.16
# cmake
cmake -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DMYSQL_DATADIR=/data/mysql/mysql3306/mydata -DSYSCONFDIR=/etc/my.cnf -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_PARTITION_STORAGE_ENGINE=1 -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DENABLE_DEBUG_SYNC=0 -DENABLED_LOCAL_INFILE=1 -DENABLED_PROFILING=1 -DMYSQL_TCP_PORT=3306 -DMYSQL_UNIX_ADDR=/data/mysql/mysql3306/tmpdir/my-3306.sock -DWITH_DEBUG=0 -DWITH_SSL=yes -DWITH_SAFEMALLOC=OFF -DDOWNLOAD_BOOST=1 -DWITH_BOOST=/usr/local/boost
 
# make 
# 该命令中可以通过添加-j参数指定多线程工作，如make -j2 && make install -j2 则使用2个CPU核进行make
# 该步骤执行完毕后，可以到CMAKE_INSTALL_PREFIX参数指定的目录下，即MySQL安装目录下查看到mysql相关目录与文件
make && make install
# 修改MySQL安装目录的所属用户与用户组为mysql:mysql
chown -R mysql:mysql /usr/local/mysql

```shell
 # 进入到MySQL安装目录下
 cd /usr/local/mysql
 # 初始化MySQL，切记--defaults-file=/etc/my.cnf要放在参数的第一位，初始化信息可以在MySQL的errorlog中查看，并且在errorlog会生成一个root的随机密码，该随机密码仅仅为root@localhost用户所有。
 mysqld --defaults-file=/etc/my.cnf --initialize --basedir=/usr/local/mysql --datadir=/data/mysql/mysql3306/mydata --user=mysql

 vim /etc/profile
 # 在~/.bashrc文件下添加如下语句
 export MYSQL_HOME=/usr/local/mysql
 export PATH=${MYSQL_HOME}/bin:$PATH
 # 保存后，使环境变量生效
 source /etc/profile

mysqld_safe --defaults-file=/etc/my.cnf &
# 此时可以通过ps -ef | grep mysql看到相关进程

mysql -uroot -S /data/mysql/mysql3306/tmpdir/mysql.sock -p
# 输入errorlog中生成的随机密码，即可登陆MySQL
# 登陆mysql需要修改root密码，否则会出现下列情况：
root@localhost : (none) 11:16:52> show databases;
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
# 修改root密码
set password='MYSQL';
# 目前版本可以使用直接的字符串代替以前password('xxx')的加密方式，目前版本提示如下：
root@localhost : (none) 11:16:54> set password=password('MYSQL');
Query OK, 0 rows affected, 1 warning (0.00 sec)
Warning (Code 1287): 'SET PASSWORD = PASSWORD('<plaintext_password>')' is deprecated and will be removed in a future release. Please use SET PASSWORD = '<plaintext_password>' instead
root@localhost : (none) 11:19:27> set password='MYSQL';