Sidekiq抛出Redis::CommandError

Question

我有一个用于Sidekiq/Rails的redis容器，几天前还在同一个docker主机上设置了rabbitmq。自从我一直收到这些错误后：

UNBLOCKED force unblock from blocking operation, instance state changed (master -> slave?)

redis/client.rb in call at line 126
    def call(command)
      reply = process([command]) { read }
      raise reply if reply.is_a?(CommandError)

      if block_given?
        yield reply

redis/client.rb in block in call_with_timeout at line 219
redis/client.rb in with_socket_timeout at line 292
redis/client.rb in call_with_timeout at line 218
redis.rb in block in _bpop at line 1186
redis.rb in block in synchronize at line 52
monitor.rb in mon_synchronize at line 226
redis.rb in synchronize at line 52
redis.rb in _bpop at line 1183
redis.rb in brpop at line 1228
redis/namespace.rb in call_with_namespace at line 469
redis/namespace.rb in block (2 levels) in <class:Namespace> at line 349
sidekiq/fetch.rb in block in retrieve_work at line 37
sidekiq.rb in block in redis at line 97
connection_pool.rb in block (2 levels) in with at line 65
connection_pool.rb in handle_interrupt at line 64
connection_pool.rb in block in with at line 64
connection_pool.rb in handle_interrupt at line 61
connection_pool.rb in with at line 61
sidekiq.rb in redis at line 94
sidekiq/fetch.rb in retrieve_work at line 37
sidekiq/processor.rb in get_one at line 83
sidekiq/processor.rb in fetch at line 95
sidekiq/processor.rb in process_one at line 77
sidekiq/processor.rb in run at line 68
sidekiq/util.rb in watchdog at line 15
sidekiq/util.rb in block in safe_thread at line 24 

redis日志没有显示任何相关内容，只显示了“保存数据库”之类的内容。

我是不是做了什么坏事，把它们都设置在同一台主机上？

Answer 1

原来有人删除了防火墙规则，所以redis端口暴露在数据中心范围的VLAN中。

由于这台机器所在的数据中心3年前承诺将发布一项功能，每个客户/帐户都可以拥有自己的单独VLAN，但他们还没有这样做，他们的一些客户似乎并不打算这么做。

我看到的错误是有人在探查端口并尝试各种远程攻击。

添加防火墙规则备份后，错误消失。