我有一个bash脚本启动一些python代码，在最新的raspbian下运行在RasPi上。如果我用sudo手动运行它运行正常，但是当它在启动时自动运行时我得到一个mysql错误。该脚本从/etc/rc.local
中的一行调用脚本是
#!/bin/bash
/home/control/solar/v10_1/control.py >> '/home/control/solar/logs/control_X.X_start.log' 2>&1 &
echo "control started" >> '/home/control/solar/logs/control_X.X_start.log'
echo "UID is $UID , EUID is $EUID" >> '/home/control/solar/logs/control_X.X_start.log'
启动后输出到日志
UID is 0 , EUID is 0
Traceback (most recent call last):
File "/home/control/solar/v10_1/control.py", line 42, in <module>
import variables # global variables
File "/home/control/solar/v10_1/variables.py", line 13, in <module>
gv.db = MySQLdb.connect("localhost", "solar", "solar", db='solar') # database for logging
File "/usr/lib/python2.7/dist-packages/MySQLdb/__init__.py", line 81, in Connect
return Connection(*args, **kwargs)
File "/usr/lib/python2.7/dist-packages/MySQLdb/connections.py", line 187, in __init__
super(Connection, self).__init__(*args, **kwargs2)
_mysql_exceptions.OperationalError: (2002, "Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)")
我已将所有路径设为绝对路径，两种情况下UID均为0，这会导致行为差异吗？