1:下载mysql8文件
https://cdn.mysql.com//Downloads/MySQL-8.0/mysql-8.0.18-el7-x86_64.tar.gz
2:新建一个my.cnf文件
vi my.cnf
[mysqld]
#skip-grant-tables
#collation_server=utf8_general_ci
#character_set_server=utf8
collation_server=utf8mb4_zh_0900_as_cs
character_set_server=utf8mb4
event_scheduler=ON
port=3390
mysqlx_port=33900
max_connections=1000
innodb_buffer_pool_size=3072M
table_open_cache=4000
key_buffer_size=384M
max_allowed_packet=4M
sort_buffer_size=1M
read_buffer_size=1M
read_rnd_buffer_size=8M
myisam_sort_buffer_size=64M
thread_cache_size=64
default_authentication_plugin=mysql_native_password
datadir=/app/software/mysql8/data
socket=/app/software/mysql8/mysql.sock
#log-bin=mysql-bin
lower_case_table_names=1
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
symbolic-links=0
[mysqld_safe]
log-error=/app/software/mysql8/mysql.log
pid-file=mysql.pid
3: 把下载好的mysql安装文件和my.cnf 放在同一个目录下
4:新建一键安装mysql脚本install_mysql8.sh
vi install_mysql8.sh
#!/bin/bash
#shell install Mysql8
#LiuQianMing 2019-11-20 16:55:10
#tar gz
tar -zxvf mysql-8.0.18-el7-x86_64.tar.gz
mv mysql-8.0.18-el7-x86_64 mysql8
cp my.cnf mysql8
cd mysql8
#当前登录用户
currentUser=$USER
#mysql 访问端口
mysqlPort=3390
#mysql 插件 端口
mysqlxPort=33900
#mysql root 密码 根据实际需要设置
mysqlRootPasswd='xxxxxxx'
#mysql新增普通用户名 根据实际需要设置
mysqlPublicUser=xxxx
#mysql新增普通用户密码 根据实际需要设置
mysqlPublicUserPasswd='xxxxx'
mysqlDir=$(cd $(dirname $0); pwd)
mkdir data
echo $(date +'%Y-%m-%d %H:%M:%S'):'开始初始化数据库启动文件my.cnf'
#sed -i '/mysqld/a\datadir=$mysqlDir/data' my.cnf;
sed -i '/^datadir=/c'\datadir=$mysqlDir\/data'' my.cnf
#sed -i '/mysqld/a\basedir=$mysqlDir' my.cnf;
sed -i '/^basedir=/c'\basedir=$mysqlDir'' my.cnf
#sed -i '/mysqld/a\port=3390' my.cnf;
sed -i '/^port=/c'\port=$mysqlPort'' my.cnf
#sed -i '/mysqld/a\port=3390' my.cnf;
sed -i '/^mysqlx_port=/c'\mysqlx_port=$mysqlxPort'' my.cnf
#sed -i '/mysqld/a\character_set_server=utf8mb4' my.cnf;
sed -i '/^character_set_server=/c'\character_set_server=utf8mb4'' my.cnf
#sed -i '/mysqld/a\collation_server=utf8mb4_zh_0900_as_cs' my.cnf;
sed -i '/^collation_server=/c'\collation_server=utf8mb4_zh_0900_as_cs'' my.cnf
#sed -i '/mysqld/a\event_scheduler=ON' my.cnf;
sed -i '/^event_scheduler=/c'\event_scheduler=ON'' my.cnf
#sed -i '/mysqld/a\socket=$mysqlDir/mysql.sock' my.cnf;
sed -i '/^socket=/c'\socket=$mysqlDir\/mysql.sock'' my.cnf
#sed -i '/mysqld/a\lower_case_table_names=1' my.cnf;
sed -i '/^lower_case_table_names=/c'\lower_case_table_names=1'' my.cnf
#sed -i '/mysqld/a\default_authentication_plugin=mysql_native_password' my.cnf;
sed -i '/^default_authentication_plugin=/c'\default_authentication_plugin=mysql_native_password'' my.cnf
#sed -i '/mysqld/a\skip-grant-tables' my.cnf;
#sed -i '/^skip-grant-tables=/c'\#skip-grant-tables'' my.cnf
sed -i '/^log-error=/c'\log-error=$mysqlDir\/mysql.log'' my.cnf
sed -i '/^pid-file=/c'\pid-file=$mysqlDir\/mysql.pid'' my.cnf
echo $(date +'%Y-%m-%d %H:%M:%S'):'开始初始化数据库启动文件mysql.server'
cp support-files/mysql.server $mysqlDir
#sed -i '46c\basedir=$mysqlDir' mysql.server;
sed -i '/^basedir=/c'\basedir=$mysqlDir'' mysql.server
#sed -i '47c\datadir=$mysqlDir/data' mysql.server;
sed -i '/^datadir=/c'\datadir=$mysqlDir\/data'' mysql.server
echo $(date +'%Y-%m-%d %H:%M:%S'):'开始初始化数据库'
$mysqlDir/bin/mysqld --defaults-file=$mysqlDir/my.cnf --initialize --user=$USER --basedir=$mysqlDir --datadir=$mysqlDir/data --log-error=$mysqlDir/mysql.log
echo $(date +'%Y-%m-%d %H:%M:%S'):'数据库初始化完成'
echo $(date +'%Y-%m-%d %H:%M:%S'):'开始启动数据库'
$mysqlDir/mysql.server start
#修改mysql登录密码
tempPasswd=`grep 'temporary password' $mysqlDir/mysql.log`
mysqlPasswd=`echo ${tempPasswd##*localhost:}`
echo $(date +'%Y-%m-%d %H:%M:%S'):"临时密码：$mysqlPasswd"
echo $(date +'%Y-%m-%d %H:%M:%S'):'修改root密码'
mysql -uroot -p"${mysqlPasswd}" -S $mysqlDir/mysql.sock -e "ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '$mysqlRootPasswd'" --connect-expired-password
echo $(date +'%Y-%m-%d %H:%M:%S'):'修改root密码成功'
echo $(date +'%Y-%m-%d %H:%M:%S'):'创建blekey用户'
mysql -uroot -p"$mysqlRootPasswd" -S $mysqlDir/mysql.sock -e "CREATE USER '$mysqlPublicUser'@'%' IDENTIFIED BY '$mysqlPublicUserPasswd'" --connect-expired-password
echo $(date +'%Y-%m-%d %H:%M:%S'):'创建xxx用户成功'
echo $(date +'%Y-%m-%d %H:%M:%S'):'赋权x x x用户'
mysql -uroot -p"$mysqlRootPasswd" -S $mysqlDir/mysql.sock -e "GRANT ALL ON *.* TO '$mysqlPublicUser'@'%'" --connect-expired-password
echo $(date +'%Y-%m-%d %H:%M:%S'):'赋权xxx用户成功'
echo $(date +'%Y-%m-%d %H:%M:%S'):'刷新权限'
mysql -uroot -p"$mysqlRootPasswd" -S $mysqlDir/mysql.sock -e "FLUSH PRIVILEGES" --connect-expired-password
echo $(date +'%Y-%m-%d %H:%M:%S'):'刷新权限成功'
#如果当前用户是root配置etc下，如果是普通用户则配置到对应用户下的环境变量
if [ "$currentUser" = "root" ];
then
sed -i '$a \export PATH='$mysqlDir'\/bin:$PATH' /etc/profile
source /etc/profile
else
sed -i '$a \export PATH='$mysqlDir'\/bin:$PATH' /home/"$currentUser"/.bash_profile
source /home/"$currentUser"/.bash_profile
fi
#sed -i '/^skip-grant-tables=/c'\#skip-grant-tables'' my.cnf
#$mysqlDir/mysql.server restart