1）正常 disable service autorun的方法，例如禁用mysql：
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# ls -l /etc/rc?.d/*apache2
lrwxrwxrwx 1 root root 17 2007-07-05 22:51 /etc/rc0.d/K91apache2 -> ../init.d/apache2
lrwxrwxrwx 1 root root 17 2007-07-05 22:51 /etc/rc1.d/K91apache2 -> ../init.d/apache2
lrwxrwxrwx 1 root root 17 2007-07-05 22:51 /etc/rc2.d/S91apache2 -> ../init.d/apache2
lrwxrwxrwx 1 root root 17 2007-07-05 22:51 /etc/rc3.d/S91apache2 -> ../init.d/apache2
lrwxrwxrwx 1 root root 17 2007-07-05 22:51 /etc/rc4.d/S91apache2 -> ../init.d/apache2
lrwxrwxrwx 1 root root 17 2007-07-05 22:51 /etc/rc5.d/S91apache2 -> ../init.d/apache2
lrwxrwxrwx 1 root root 17 2007-07-05 22:51 /etc/rc6.d/K91apache2 -> ../init.d/apache2
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# update-rc.d -f apache2 remove
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将上面的apache2 换成 mysql 即可。
2）mysql 通过上面方法后，发现mysql service仍然启动运行，原因是因为linux runlevel，解决方法如下：
我们看/etc/init/mysql.conf里面的定义
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start on (net-device-up
and local-filesystems
and runlevel [2345])
stop on runlevel [016]
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从这里我们可以读到，runrevel为2345时，mysql是启动的，唯独016是不启动的
直接注释掉了启动的那行，而stop里面为0123456（这句不改也可以）
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start on (net-device-up
and local-filesystems)
# and runlevel [2345])
stop on runlevel [0123456]
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