title: Apache not serving after server restart
body: <p>I just restarted my server on digital ocean using reboot, and now apache is not serving any pages.  I can ping the IP from my client.  Everything was working fine before the restart.  Here are some outputs from some of the tests I've done so far:</p>
  
  <pre><code>Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
  tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1005/sshd       
  tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1774/sendmail: MTA:
  tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN      1241/mysqld     
  tcp        0      0 127.0.0.1:587           0.0.0.0:*               LISTEN      1774/sendmail: MTA:
  tcp        0      0 127.0.0.1:11211         0.0.0.0:*               LISTEN      1703/memcached  
  tcp6       0      0 :::22                   :::*                    LISTEN      1005/sshd       
  tcp6       0      0 :::443                  :::*                    LISTEN      2991/apache2    
  tcp6       0      0 :::80                   :::*                    LISTEN      2991/apache2    
  </code></pre>
  
  <p>Here is result of netstat.  I'm not sure but does this mean that apache is not listening on IPV4 (TCP)??:</p>
  
  <pre><code>Active Internet connections (only servers)
  Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
  tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1005/sshd       
  tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1774/sendmail: MTA:
  tcp        0      0 127.0.0.1:3306          0.0.0.0:*               LISTEN      1241/mysqld     
  tcp        0      0 127.0.0.1:587           0.0.0.0:*               LISTEN      1774/sendmail: MTA:
  tcp        0      0 127.0.0.1:11211         0.0.0.0:*               LISTEN      1703/memcached  
  tcp6       0      0 :::22                   :::*                    LISTEN      1005/sshd       
  tcp6       0      0 :::443                  :::*                    LISTEN      2991/apache2    
  tcp6       0      0 :::80                   :::*                    LISTEN      2991/apache2    
  udp        0      0 127.0.0.1:11211         0.0.0.0:*                           1703/memcached  
  </code></pre>
  
  <p>The error.log seems OK:</p>
  
  <pre><code>[Thu Oct 01 09:09:20.131886 2015] [mpm_prefork:notice] [pid 2991]          AH00171: Graceful restart requested, doing restart
  AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1. Set the 'ServerName' directive globally to suppress this message
  [Thu Oct 01 09:09:20.213216 2015] [:notice] [pid 3176] FastCGI: process manager initialized (pid 3176)
  [Thu Oct 01 09:09:20.221458 2015] [ssl:warn] [pid 2991] AH02292: Init: Name-based SSL virtual hosts only work for clients with TLS server name indication support (RFC 4366)
  [Thu Oct 01 09:09:21.001486 2015] [mpm_prefork:notice] [pid 2991] AH00163: Apache/2.4.7 (Ubuntu) mod_fastcgi/mod_fastcgi-SNAP-0910052141 OpenSSL/1.0.1f configured -- resuming normal operations
  [Thu Oct 01 09:09:21.002462 2015] [core:notice] [pid 2991] AH00094: Command line: '/usr/sbin/apache2'
  </code></pre>