mkdir -p /data/330{7,8,9}/data

cat > /data/3307/my.cnf <<EOF
[mysqld]
basedir=/app/mysql
datadir=/data/3307/data
socket=/data/3307/mysql.sock
log_error=/data/3307/mysql.log
port=3307
server_id=7
log_bin=/data/3307/mysql-bin
EOF

cat > /data/3308/my.cnf <<EOF
[mysqld]
basedir=/app/mysql
datadir=/data/3308/data
socket=/data/3308/mysql.sock
log_error=/data/3308/mysql.log
port=3308
server_id=8
log_bin=/data/3308/mysql-bin
EOF

cat > /data/3309/my.cnf <<EOF
[mysqld]
basedir=/app/mysql
datadir=/data/3309/data
socket=/data/3309/mysql.sock
log_error=/data/3309/mysql.log
port=3309
server_id=9
log_bin=/data/3309/mysql-bin
EOF

mysqld --initialize-insecure  --user=mysql --datadir=/data/3307/data --basedir=/app/mysql
mysqld --initialize-insecure  --user=mysql --datadir=/data/3308/data --basedir=/app/mysql
mysqld --initialize-insecure  --user=mysql --datadir=/data/3309/data --basedir=/app/mysql

touch /etc/systemd/system/mysql330{7,8,9}.service 
cat > /etc/systemd/systemd/mysql3307.service << EOF
[Unit]
Description=MySQL Server
Documentation=man:mysqld(8)
Documentation=http://dev.mysql.com/doc/refman/en/using-systemd.html
After=network.target
After=syslog.target
[Install]
WantedBy=multi-user.target
[Service]
User=mysql
Group=mysql
ExecStart=/app/mysql/bin/mysqld --defaults-file=/data/3307/my.cnf
LimitNOFILE = 5000
EOF

# 重載systemd配置
systemctl daemon-reload

chown -R mysql:mysql /data/*

systemctl status mysql3307
systemctl status mysql3308
systemctl status mysql3309

systemctl start mysql3307
systemctl start mysql3308
systemctl start mysql3309

netstat -tunpl | grep 330
mysql -uroot -p -h localhost -S /data/3307/mysql.sock -P 3307
mysql -uroot -p -h localhost -S /data/3308/mysql.sock -P 3308
mysql -uroot -p -h localhost -S /data/3309/mysql.sock -P 3309