RuntimeError: -ERR Unknown Command 在 Ruby 上运行 redis gem答案

【问题标题】：RuntimeError: -ERR Unknown Command running redis gem on RubyRuntimeError: -ERR Unknown Command 在 Ruby 上运行 redis gem
【发布时间】：2011-04-11 10:46:01
【问题描述】：

环境：

Ubuntu 9.10（在 VirtualBox 中运行）
Ruby v1.8.7
Redis gem v2.0.6

在 irb 上，当我尝试初始化 Redis 时，我得到一个 RuntimeError。这是一个sn-p：

irb(main):001:0> require 'rubygems'
=> true

irb(main):002:0> require 'redis'
WARNING: using the built-in Timeout class which is known to have issues when used for opening connections. Install the SystemTimer gem if you want to make sure the Redis client will not hang.
=> true

irb(main):003:0> r = Redis.new
RuntimeError: -ERR unknown command
  from /usr/lib/ruby/gems/1.8/gems/redis-2.0.6/lib/redis/client.rb:172:in `format_error_reply'
  from /usr/lib/ruby/gems/1.8/gems/redis-2.0.6/lib/redis/client.rb:162:in `format_reply'
  from /usr/lib/ruby/gems/1.8/gems/redis-2.0.6/lib/redis/client.rb:105:in `read'
  from /usr/lib/ruby/gems/1.8/gems/redis-2.0.6/lib/redis/client.rb:35:in `call'
  from /usr/lib/ruby/gems/1.8/gems/redis-2.0.6/lib/redis/client.rb:63:in `process'
  from /usr/lib/ruby/gems/1.8/gems/redis-2.0.6/lib/redis/client.rb:245:in `ensure_connected'
  from /usr/lib/ruby/gems/1.8/gems/redis-2.0.6/lib/redis/client.rb:61:in `process'
  from /usr/lib/ruby/gems/1.8/gems/redis-2.0.6/lib/redis/client.rb:199:in `logging'
  from /usr/lib/ruby/gems/1.8/gems/redis-2.0.6/lib/redis/client.rb:60:in `process'
  from /usr/lib/ruby/gems/1.8/gems/redis-2.0.6/lib/redis/client.rb:34:in `call'
  from /usr/lib/ruby/gems/1.8/gems/redis-2.0.6/lib/redis.rb:51:in `info'
  from /usr/lib/ruby/gems/1.8/gems/redis-2.0.6/lib/redis.rb:560:in `inspect'
  from /usr/lib/ruby/1.8/irb.rb:302:in `output_value'
  from /usr/lib/ruby/1.8/irb.rb:151:in `eval_input'
  from /usr/lib/ruby/1.8/irb.rb:263:in `signal_status'
  from /usr/lib/ruby/1.8/irb.rb:147:in `eval_input'
  from /usr/lib/ruby/1.8/irb.rb:146:in `eval_input'
  from /usr/lib/ruby/1.8/irb.rb:70:in `start'
  from /usr/lib/ruby/1.8/irb.rb:69:in `catch'
  from /usr/lib/ruby/1.8/irb.rb:69:in `start'
  from /usr/bin/irb:13irb(main):004:0> exit

以前有人遇到过这种情况吗？有什么想法吗？

【问题讨论】：

标签： ruby ubuntu-9.10 redis

【解决方案1】：

如果您的 redis 是 9.10 发行版提供的版本，则版本太旧而无法使用 2.x gem 运行。 2.x gem 至少需要一个 1.2 redis

【讨论】：

是的...我使用的是旧版本的 redis。 1.2.6 成功了。谢谢。