title: CLUSTERDOWN The cluster is down in redis
body: <p>I am running 6 redis nodes  ,3 masters and 3 slaves , every master has 1 slave . </p>
  
  <pre><code>Master[0] -&gt; Slots 0 - 5460
  
  Master[1] -&gt; Slots 5461 - 10922
  
  Master[2] -&gt; Slots 10923 - 16383
  
  Adding replica 172.17.0.5:6382 to 172.17.0.2:6379
  
  Adding replica 172.17.0.6:6383 to 172.17.0.3:6380
  
  Adding replica 172.17.0.7:6384 to 172.17.0.4:6381
  </code></pre>
  
  <p>The clustering is running and I can SET and GET Keys.</p>
  
  <p>I shutdown master1 172.17.0.2:6379 , slave1 (172.17.0.5:6382)  has became master ,cluster is still running  .</p>
  
  <p>I shutdown slave1 (172.17.0.5:6382) , I tried to SET keys I have got this error </p>
  
  <blockquote>
    <p>(error) CLUSTERDOWN The cluster is down</p>
  </blockquote>
  
  <p>What I expected when I shutdown master1 and slave1 , cluster will still running and accepts redis operations but the opposite has happened.</p>
  
  <p>What is  the reason behind this ?</p>
  
  <p>Is it applicable to solve this problem without starting master1 or slave1 again ?</p>