Ubuntu下启动 Redis时， 提示 "Can't open the log file: Permission denied failed"

问题来源：在删除var目录下的log文件时，将redis文件夹删除了。然后在重启时：/etc/init.d/redis-server start，提示：

Starting redis-server: 

*** FATAL CONFIG FILE ERROR ***
Reading the configuration file, at line 94
>>> 'logfile /var/log/redis/redis-server.log'
Can't open the log file: No such file or directory

failed。好吧，于是 touch /var/log/redis/redis-server.log后，再重启时，提示：

Starting redis-server:
*** FATAL CONFIG FILE ERROR ***
Reading the configuration file, at line 94
>>> 'logfile /var/log/redis/redis-server.log'
Can't open the log file: Permission denied
failed

查了一下，最终发现有可能是权限不够的问题，于是，ls -l /var/log/redis/redis-server.log

提示：-rw-r--r-- 1 root root 0  6月  2 10:05 /var/log/redis/redis-server.log。如下图所示：

   解决办法：

 chmod 777 /var/log/redis/redis-server.log

 再重启，显示成功。问题得到解决