title: varnish backend VCC-compiler failed
body: <p>i want to add an varnish proxy infront of my SX server i have two droplets ip:192.168.0.100 ip: 192.168.0.101 both works in lan but while restarting varnish shows a compile error</p>
  
  <p>nano /etc/varnish/default.vcl</p>
  
  <pre><code># define our first nginx server
  backend nginx01 {
      .host = "192.168.0.100";
      .port = "80";
  }
  
  # define our second nginx server
  backend nginx02 {
      .host = "192.168.0.101";
      .port = "80";
  }
  
  # configure the load balancer
  director nginx round-robin {
      { .backend = nginx01; }
      { .backend = nginx02; }
  }
  
  # When a request is made set the backend to the round-robin director named nginx
  sub vcl_recv {
      set req.backend = nginx;
  }
  </code></pre>
  
  <p>while restarting varnish shows an error </p>
  
  <pre><code>root@Sproxy:~# service varnish restart
  Message from VCC-compiler:
  
  directors are now in directors VMOD.
  ('input' Line 30 Pos 1)
  director nginx round-robin {
  ########--------------------
  
  Running VCC-compiler failed, exited with 2
  
  VCL compilation failed
   * Syntax check failed, not restarting
  </code></pre>