Barnyard2 Fatal error
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 Cannot get Barnyard2 stay connected. Here are log entries from that last time Snort could not connect to it: Feb 11 11:42:07 barnyard2[46121]: FATAL ERROR: database mysql_error: Can't connect to MySQL server on '10.0.10.53' (60) 
 Feb 11 11:40:52 barnyard2[46121]: PID path stat checked out ok, PID path set to /var/run
 Feb 11 11:40:52 barnyard2[46121]: Daemon initialized, signaled parent pid: 45949
 Feb 11 11:40:52 barnyard2[45949]: Daemon parent exiting
 Feb 11 11:40:52 barnyard2[45949]: Initializing daemon mode
 Feb 11 11:40:52 barnyard2[45949]: INFO database: Defaulting Reconnect sleep time to 5 second
 Feb 11 11:40:52 barnyard2[45949]: INFO database: Defaulting Reconnect/Transaction Error limit to 10
 Feb 11 11:40:52 barnyard2[45949]: Barnyard2 spooler: Event cache size set to [2048]
 Feb 11 11:40:52 barnyard2[45949]: Found pid path directive (/var/run)
 Feb 11 11:40:52 barnyard2[45949]: Initializing Output Plugins!
 Feb 11 11:40:52 barnyard2[45949]: Initializing Input Plugins!
 Feb 11 11:40:52 barnyard2[45949]: –== Initializing Barnyard2 ==--
 Feb 11 11:40:52 barnyard2[45949]:
 Feb 11 11:40:52 barnyard2[45949]: Running in Continuous mode
 Feb 11 11:40:52 barnyard2[45949]: Found pid path directive (/var/run)
 Feb 11 11:40:52 php: /snort/snort_interfaces.php: Toggle (barnyard starting) for WAN3(AT&T DSL- WAN3)…
 Feb 11 11:32:29 barnyard2[37505]: FATAL ERROR: database mysql_error: Can't connect to MySQL server on '10.0.10.53' (60)
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 Got this one resolved. 
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 Are you sure that your database server is accepting connections from outside itself? By default MySQL usually only listens to localhost.