启动redis时，报错/var/run/redis_6379.pid exists, process is already running or crashed

在执行service redis_6379 start命令，启动redis时，报错/var/run/redis_6379.pid exists, process is already running or crashed

执行:

rm -rf /var/run/redis_6379.pid

再启动即可:

service redis_6379 start