title: failed with Received heartbeat from member with the same member ID as ourself:0
body: <p>Trying to set a replica set configuration for 1 primary , 1 slave and 1 arbitrator. 
  I have setup this in the <code>/etc/mongodb.conf</code></p>
  
  <pre><code>replication:
    replSetName: ProductionReplicaSet
  </code></pre>
  
  <p>but accidentally ran <code>rs.initiate()</code>  on the three servers. now when I'm running <code>rs.add("mongo02....")</code> i'm getting :</p>
  
  <pre><code>{
      "ok" : 0,
      "errmsg" : "Quorum check failed because not enough voting nodes responded; required 2 but only the following 1 voting nodes responded: chef-production2-mongo01:27017; the following nodes did not respond affirmatively: mongo02...:27017 failed with Received heartbeat from member with the same member ID as ourself: 0",
      "code" : 74
  }
  </code></pre>
  
  <p>I read here that <code>rs.initiate()</code> can be reversed but the instructions are not clear. </p>
  
  <p>tried on mongo02:</p>
  
  <pre><code>config = rs.config() //config with _id :0
  config["members"][0]["_id"] = 1 
  rs.reconfig(config)
  {
      "ok" : 0,
      "errmsg" : "New and old configurations both have members with host of chef-production2-mongo02:27017 but in the new configuration the _id field is 1 and in the old configuration it is 0 for replica set ProductionReplicaSet",
      "code" : 103
  }
  </code></pre>
  
  <p>any help? i'm open to other solutions. </p>