Good day All! 
 UF version 8.2.9 on a series of Linux machines. 
 I've an application containing local/server.conf deploying to a series of Linux machines. 
 The machines have a mixed configuration of short and fqdn as the hostname. For consistence, want to use the short name. 
 Each instance environment contains a variable called HOST_EXTERNAL which is the short name. 
 The documentation states: 
 * Can contain environment variables.
* After any environment variables are expanded, the server name
  (if not an IPv6 address) can only contain letters, numbers, underscores,
  dots, and dashes. The server name must start with a letter, number, or an
  underscore. 
 ERROR: serverName must start with a letter, number, or underscore. You have: $HOST_EXTERNAL    ServerName is only set in the apps/app-name/local and system/default/server.conf.  
 system/default/server.conf:serverName=$HOSTNAME 
 app-name/local/server.conf:serverName = $HOST_EXTERNAL 
 Googling, doesn't produce any examples of using an environment variable other than $HOSTNAME.    What am I missing on attempting to use $HOST_EXTERNAL as serverName in server.conf 
 Thoughts? 
						
					
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