title: Why HAProxy won't listen on port 80?
body: <p>Fresh machine, no http servers are running (no httpd, no lighttpd, no nginx)</p>
  
  <pre><code>$ netstat -nat | grep 80 | grep LISTEN
  </code></pre>
  
  <p>yields nothing...</p>
  
  <p>Here's my HAProxy conf, what can be the reason for HAProxy not to </p>
  
  <pre><code>global
          maxconn 72000
          daemon
  
  defaults
          mode    http
          timeout connect 4000ms
          timeout client 60000ms
          timeout server 30000ms
  
  
  frontend my_frontend
           bind *:80
           default_backend cdn
  
  backend cdn
         server cdn1 10.177.0.17:80 weight 1 maxconn 8192 check
         server cdn2 10.177.1.92:80 weight 1 maxconn 8192 check
         server cdn3 10.177.1.147:80 weight 1 maxconn 8192 check
         server cdn4 10.177.1.202:80 weight 1 maxconn 8192 check
  
         server cdn4 10.177.1.202:80 weight 1 maxconn 8192 check
         server cdn5 10.177.1.211:80 weight 1 maxconn 8192 check
         server cdn6 10.177.1.93:80 weight 1 maxconn 8192 check
         server cdn7 10.177.1.230:80 weight 1 maxconn 8192 check
         server cdn8 10.177.0.7:80 weight 1 maxconn 8192 check
         server cdn9 10.177.0.196:80 weight 1 maxconn 8192 check
         server cdn10 10.177.1.82:80 weight 1 maxconn 8192 check
         server cdn11 10.177.0.124:80 weight 1 maxconn 8192 check
         server cdn12 10.177.1.142:80 weight 1 maxconn 8192 check
         server cdn13 10.177.1.58:80 weight 1 maxconn 8192 check
         server cdn14 10.177.1.137:80 weight 1 maxconn 8192 check
         server cdn15 10.177.1.169:80 weight 1 maxconn 8192 check
         server cdn16 10.177.0.187:80 weight 1 maxconn 8192 check
         server cdn17 10.177.1.95:80 weight 1 maxconn 8192 check
         server cdn18 10.177.1.123:80 weight 1 maxconn 8192 check
  </code></pre>
  
  <p>running haproxy-1.4.13 from source.</p>
  
  <p>When I try to start it I get this error</p>
  
  <pre><code>[ALERT] 084/220004 (2409) : Starting frontend my_frontend: cannot bind socket
  </code></pre>