Linux下安装mysql数据库

#/usr/bin
#
#1.检查是否安装了mysql，如果已经安装了，则要把原先的版本卸载掉
#rpm -qa|grep mysql

for i in `rpm -qa | grep "mysql"`; 
do 
rpm -e --allmatches $i --nodeps;
done

#2.安装必要的软件包
yum install -y make gcc-c++ cmake bison-devel  ncurses-devel
yum install -y gcc gcc-c++ kernel-devel
yum install -y readline-devel pcre-devel openssl-devel openssl zlib zlib-devel pcre-devel

#3.下载mysql,如果已经下载文件，请修改这部分
cd /home #只是习惯把文件下载到/home目录下
wget --no-check-certificate http://mirrors.sohu.com/mysql/MySQL-5.7/mysql-boost-5.7.27.tar.gz

#wget --no-check-certificate https://sourceforge.net/projects/boost/files/boost/1.59.0/boost_1_59_0.tar.gz/
#tar xf boost_1_59_0.tar.gz -C /usr/local/boost

tar -zxvf mysql-boost-5.7.27.tar.gz
cd mysql-5.7.27

#4.使用cmake编译
mysql_home=/u01/app/mysql #自定义地址

if [ ! -d "$mysql_home" ]; then
mkdir -p "$mysql_home"
fi

cmake -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DWITH_BOOST=boost

make && make install 
#2.新建mysql的用户
user=mysql
group=dba

#create group if not exists
egrep "^$group" /etc/group >& /dev/null
if [ $? -ne 0 ]
then
    groupadd $group
fi

#create user if not exists
egrep "^$user" /etc/passwd >& /dev/null
if [ $? -ne 0 ]
then
    useradd -g $group $user
fi

if [ ! -d "$mysql_home/data" ]; then
mkdir -p "$mysql_home/data"
fi

if [ ! -d "$mysql_home/run" ]; then
mkdir -p "$mysql_home/run"
fi

if [ ! -d "$mysql_home/log" ]; then
mkdir -p "$mysql_home/log"
fi

#这里有可能报错，会导致数据库服务开不起来，后来把--datadir=$mysql_home/data后重跑一遍就可以开启服务了
cd $mysql_home
bin/mysqld --user=mysql --basedir=$mysql_home --datadir=$mysql_home/data --initialize 

chown -R mysql:dba $mysql_home

#注册服务
cd $mysql_home/support-files
cp mysql.server /etc/init.d/mysqld

#拷贝配置文件
#cp /mnt/hgfs/virtual_share_file/my_adjust.cnf $mysql_home/my.cnf

#开机启动
chkconfig mysqld on