title: riak error: [ERROR] [Node] (172.16.1.56:8087|0|0) failed healthcheck in createConnection
body: <p>I'm using Riak KV 2.2.6 in a single host. I need this for implementing APACHE TRAFFIC CONTROL which is my CDN platform. I need to connect from one of my server in APACHE TRAFFIC CONTROL to Riak server but I get this error message in my APACHE TRAFFIC CONTROL server:</p>
  <pre><code>`riak error: [ERROR] [Node] (172.16.1.56:8087|0|0) failed healthcheck in createConnection, err: read tcp 172.16.8.240:47638-&gt;172.16.1.56:8087: i/o timeout`
  </code></pre>
  <p>I've configured Riak using Let's encrypt SSL certificate and here is my configuration in <code>/etc/riak/riak.conf</code> for using SSL:</p>
  <pre><code>ssl.certfile = /etc/riak/certs/server.crt
  ssl.keyfile = /etc/riak/certs/server.key
  ssl.cacertfile = /etc/riak/certs/chain.pem
  tls_protocols.tlsv1.1 = on
  </code></pre>
  <p>I've added all three SSL files in correct path but I get time out error which I mentioned abow.
  Could you please tell me why I get this error message in Riak client?
  Thanks in advance.</p>