Redis错误8连接本地主机：6379。节点名称或服务名称提供，或不知道

问题描述：

我的环境是Mac OS 10.9.2，python3.3，redis-2.6.9（64位）。Redis错误8连接本地主机：6379。节点名称或服务名称提供，或不知道

我有很多的线程（nealy 2000）使用相同的Redis实例来写入数据，但一些线程抛出以下例外：

During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
    File "/usr/local/lib/python3.3/site-packages/redis/connection.py", line 250, in connect 
    sock = self._connect() 
    File "/usr/local/lib/python3.3/site-packages/redis/connection.py", line 268, in _connect 
    self.socket_timeout) 
    File "/usr/local/Cellar/python3/3.3.4/Frameworks/Python.framework/Versions/3.3/lib/python3.3/socket.py", line 417, in create_connecti 
on 
    for res in getaddrinfo(host, port, 0, SOCK_STREAM): 
socket.gaierror: [Errno 8] nodename nor servname provided, or not known 

Traceback (most recent call last): 
    File "/usr/local/Cellar/python3/3.3.4/Frameworks/Python.framework/Versions/3.3/lib/python3.3/threading.py", line 901, in _bootstrap_i 
nner 
    self.run() 
    File "/usr/local/Cellar/python3/3.3.4/Frameworks/Python.framework/Versions/3.3/lib/python3.3/threading.py", line 858, in run 
    self._target(*self._args, **self._kwargs) 
    File "proxypool.py", line 289, in _efficiency_proxy 
    self.rdb.zadd(db_proxy, time_delay, proxy) 
    File "/usr/local/lib/python3.3/site-packages/redis/client.py", line 1345, in zadd 
    return self.execute_command('ZADD', name, *pieces) 
    File "/usr/local/lib/python3.3/site-packages/redis/client.py", line 464, in execute_command 
    connection.send_command(*args) 
    File "/usr/local/lib/python3.3/site-packages/redis/connection.py", line 334, in send_command 
    self.send_packed_command(self.pack_command(*args)) 
    File "/usr/local/lib/python3.3/site-packages/redis/connection.py", line 316, in send_packed_command 
    self.connect() 
    File "/usr/local/lib/python3.3/site-packages/redis/connection.py", line 253, in connect 
    raise ConnectionError(self._error_message(e)) 
redis.exceptions.ConnectionError: Error 8 connecting localhost:6379. nodename nor servname provided, or not known.

是否有某种方式来解决这个问题？
我试图在发生这种异常时连接到redis服务器，并使用ulimit -n来设置较大的数字，但这两种方法不起作用。

向我们展示地址分配给变量（主机，端口）的代码。 – Agis

@Agis，我使用本地redis的默认（主机，端口）。 – flyer

答

我知道为什么会发生这种情况。这是由redis-server连接的最大数量引起的，它与操作系统设置的文件处理程序的最大数量有关。
如果我设置：

$ ulimit -n 1024

它的工作原理。

答

最有可能的红色服务器没有运行。使用“redid-server”命令运行它。

Redis错误8连接本地主机：6379。节点名称或服务名称提供，或不知道

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