Ubuntu Server 21.04 Install one key Generic mysql 8.0.26

Posted 2022-01-31 CIAS

        

前言

mysql 是最流行的关系型数据库管理系统，在 WEB 应用方面 MySQL 是最好的 RDBMS(Relational Database Management System：关系数据库管理系统)应用软件之一。

系统下载安装

ubuntu  系统安装&下载	mysql 下载	Mysql 管理	Linux MobaXterm 远程连接工具
download	download	download	download

 切换sh为bash 

dpkg-reconfigure dash

•  输入NO

• 查看切换结果，结果/bin/sh -> bash切换成功

ls -al /bin/sh

安装 Mysql

• 创建一键安装脚本

• 用户名root
• 密码Ciasm@123

vim /mysql-8.0.26_install.sh

#!/bin/sh
# -*- coding: utf-8 -*-
# Author: CIASM 
# Date: 2021/12/23
 
#Define data path variables
data_downloads=/data/downloads
 
#Define MYSQL path variables
echo "Define MYSQL path variables"
sleep 3
MYSQL_URL=https://cdn.mysql.com/archives/mysql-8.0/
MYSQL_FILE=mysql-8.0.26-linux-glibc2.12-x86_64.tar.xz
MYSQL_PREFIX=/usr/local/mysql
MYSQL_glibc=mysql-8.0.26-linux-glibc2.12-x86_64
 
mysql_package ()
echo "Installing dependency packages"
sleep 3
apt install libaio1 libaio-dev libncurses5 firewalld wget curl net-tools vim -y

 
install_mysql ()
if [ ! -d $MYSQL_PREFIX ];then
mysql_package
timedatectl set-timezone Asia/Shanghai
mkdir -p $data_downloads
wget -N -P $data_downloads $MYSQL_URL/$MYSQL_FILE
tar -xf $data_downloads/$MYSQL_FILE -C $data_downloads
 if [ $? -eq 0 ];then 
   mv  $data_downloads/$MYSQL_glibc /usr/local/mysql
   mysql_config
		echo -e "\\033[32mThe MYSQL Install Success...\\033[0m"
   else
		echo -e "\\033[31mThe MYSQL Install Failed...\\033[0m"
		exit 1
fi
   else
	echo -e "\\033[31mThe MYSQL already Install...\\033[0m"
	exit 1 
fi  
 

 
mysql_config ()
echo "mysql config"
sleep 3
useradd mysql -r -s /sbin/nologin
mkdir -p /data/mysql_data3306
chown root.mysql -R /usr/local/mysql
 
cat >>/etc/my.cnf<<EOF
[client]    
port = 3306
socket  = /data/mysql_data3306/mysql.sock
default-character-set=utf8

[mysqld]
datadir = /data/mysql_data3306
socket = /data/mysql_data3306/mysql.sock
log-error = /var/log/mysql_3306.log
port = 3306
character-set-server=utf8
log_timestamps = SYSTEM
default-time_zone = '+8:00'
log_bin_trust_function_creators = on
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
EOF

#Creating log output
echo "Creating log output"
sleep 3
touch /var/log/mysql_3306.log && chown -R mysql:mysql /var/log && chmod 755 /var/log/mysql*
 
echo "initialized database"
sleep 3
#Initialize each instance: After initialization, the password will be generated in the log. Remember to save it and use it later.
/usr/local/mysql/bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data3306  --log_error=/var/log/mysql_3306.log
 
#Open SSL connections for each instance
/usr/local/mysql/bin/mysql_ssl_rsa_setup --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql_data3306 --log_error=/var/log/mysql_3306.log
 
echo "Configure the database startup service"
sleep 3
#Copying server the Startup Script
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
chmod +x /etc/init.d/mysqld
 
#Creating a service script
cat >>/lib/systemd/system/mysqld.service<<EOF
[Unit]
Description=mysqld
After=network.target
[Service]
Type=forking
ExecStart=/etc/init.d/mysqld start
ExecReload=/etc/init.d/mysqld restart
ExecStop=/etc/init.d/mysqld stop
PrivateTmp=true
[Install]
WantedBy=multi-user.target
EOF
 
#start mysql
echo "start mysql"
sleep 3
systemctl daemon-reload  &&  systemctl enable --now mysqld
 
#Mysql environment variable
echo "Mysql environment variable"
sleep 3
sed -i '$aexport MYSQL_HOME=/usr/local/mysql' /etc/profile
sed -i '$aexport PATH=$MYSQL_HOME/bin:$PATH' /etc/profile
sed -i '$aexport PATH=$PATH:/usr/local/mysql/bin' /etc/profile 
 
echo "limits config"
sleep 3
cat >>/etc/security/limits.conf<<EOF
* soft nproc 65535
* hard nproc 65535
* soft nofile 65535
* hard nofile 65535
EOF
 
#source Refreshing environment variables
source /etc/profile
 
#system Maximum config
echo "system Maximum number of connections"
sleep 3
echo "fs.file-max=65535" >> /etc/sysctl.conf
 
#Resetting the Default Password
echo "mysql initialize default password"
sleep 3
mysql -S /data/mysql_data3306/mysql.sock -p`cat /var/log/mysql_3306.log | grep 'password is generated' | awk 'print $NF'` --connect-expired-password -e "alter user root@localhost identified by 'Ciasm@123'; FLUSH PRIVILEGES;"

#cofig Mysql alter database
mysql -uroot -pCiasm@123 -e "use mysql; update user set host = '%' where user = 'root'; FLUSH PRIVILEGES; ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'Ciasm@123';"

 
#firewall config
echo "config"
sleep 3
systemctl enable --now firewalld
firewall-cmd --zone=public --add-port=3306/tcp --permanent && firewall-cmd --reload 
 
#Delete mysql the downloaded installation package
echo "Delete mysql the downloaded installation package"
sleep 3
rm -rf $data_downloads/MYSQL_FILE
 

 
main ()
install_mysql

 
main

• 执行一键安装

sh /mysql-8.0.26_install.sh