#!/bin/bash
tar -xf mysql-8.2.0-linux-glibc2.17-x86_64.tar.xz
mv mysql-8.2.0-linux-glibc2.17-x86_64 /usr/local/mysql
mkdir -p /var/lib/mysql
groupadd mysql
useradd -r -g mysql -s /bin/false mysql
chown -R mysql:mysql /usr/local/mysql
chown -R mysql:mysql /var/lib/mysql
cat > /usr/local/mysql/my.cnf << EOF
[mysqld]
basedir=/usr/local/mysql
datadir=/var/lib/mysql
server_id=1
port=3306
[mysql]
default-character-set=utf8mb4
[client]
port=3306
socket=/var/lib/mysql/mysqlx.sock
EOF
cd /usr/local/mysql
./bin/mysqld --defaults-file=/usr/local/mysql/my.cnf --initialize-insecure --user=mysql
cat > /etc/systemd/system/mysql.service <<EOF
[Unit]
Description=MySQL8.2.0 Server
After=syslog.target
After=network.target
[Install]
WantedBy=multi-user.target
[Service]
User=mysql
Group=mysql
ExecStart=/usr/local/mysql/bin/mysqld_safe --defaults-file=/usr/local/mysql/my.cnf
EOF
systemctl daemon-reload
systemctl start mysql
systemctl enable mysql

#!/bin/bash
sudo systemctl stop mysql
sudo userdel mysql
sudo groupdel mysql
sudo systemctl disable mysql
sudo rm /etc/systemd/system/mysql.service
sudo rm -rf /var/lib/mysql
sudo rm -rf /usr/local/mysql
echo "mysql已成功卸载!"