1. config set masterauth abc  
2. config set requirepass abc  
3. config rewrite  
   

如：redis-trib.rb check 127.0.0.1，則會報錯ERR] Sorry, can’t connect to node 127.0.0.1:7000 
解決辦法： 
vim /usr/lib/ruby/gems/1.8/gems/redis-3.3.0/lib/redis/client.rb,然後修改passord

PS:可能由於我安裝的redis-trib.rb的ruby依賴包是最新的redis-4.0.1.gem,client.rb這個檔案路徑居然找不到...執行 find / -name "client.rb"命令發現，安放的檔案位置變了...新路徑是/var/lib/gems/2.3.0/gems/redis-4.0.1/lib/redis/client.rb

class Client
    DEFAULTS = {
      :url => lambda { ENV["REDIS_URL"] },
      :scheme => "redis",
      :host => "127.0.0.1",
      :port => 6379,
      :path => nil,
      :timeout => 5.0,
      :password => "passwd123",
      :db => 0,
      :driver => nil,
      :id => nil
 
,
      :tcp_keepalive => 0,
      :reconnect_attempts => 1,
      :inherit_socket => false
    }