调整mysql路径
mv /home/data/my3306/data/db1 /backup/my3306
ln -s /backup/my3306/db1 /home/data/my3306/data
ln -s /backup/my3306/db1 /home/data/my3306/data
mv /home/data/my3306/log /backup/my3306
ln -s /backup/my3306/log /home/data/my3306/
ln -s /backup/my3306/log /home/data/my3306/
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