Is migrating from ISPConfig 3 on Ubuntu 12.04 LTS to Ubuntu 14.04LTS possible?

Hi all,

I have had ISPConfig 3.x running on Ubuntu 12.04 LTS for some years now on different systems. Everybody is receiving the system notifications to upgrade to 14.04 LTS since a few weeks.

Since an install guide to ISPConfig 3 is available for 14.04 since a few months, I figured upgrading a running system from 12.04 to 14.04 should maybe be possible. So I did... regrettably: ISPConfig is not running anymore as are my running virtual hosts. (all done in virtualized snapshots, so fallback is possible, I'm not in trouble ;-))

My question: Is it possible to upgrade from 12.04 to 14.04 successfully and have my ISPConfig installation running as it was? Or should I start from scratch migrating ISPConfig files to a fresh 14.04 installation ? Security-wise I'd prefer not to leave my 12.04 installation as it is, allthough ISPConfig runs smoothly until know.

I remember stubbornly installing ISPConfig 3 on Ubuntu 14.04 a few months ago as a test only to found out after installation ISPConfig wasn't compatible (yet). Some RTFM applicable here.

Code:

##### SERVER #####
IP-address (as per hostname): ***.***.***.***
IP-address(es) (as per ifconfig): ***.***.***.***
[WARN] ip addresses from hostname differ from ifconfig output. Please check your ip settings.
[INFO] ISPConfig is installed.

##### ISPCONFIG #####
ISPConfig version is 3.0.5.4p1


##### VERSION CHECK #####

[INFO] php (cli) version is 5.5.9-1ubuntu4.3

##### PORT CHECK #####

[WARN] Port 8080 (ISPConfig) seems NOT to be listening
[WARN] Port 8081 (ISPConfig Apps) seems NOT to be listening

##### MAIL SERVER CHECK #####


##### RUNNING SERVER PROCESSES #####

[INFO] I found the following web server(s):
	Apache 2 (PID 2092)
[INFO] I found the following mail server(s):
	Postfix (PID 18039)
[INFO] I found the following pop3 server(s):
	Dovecot (PID 11650)
[INFO] I found the following imap server(s):
	Dovecot (PID 11650)
[INFO] I found the following ftp server(s):
	PureFTP (PID 22069)

##### LISTENING PORTS #####
(only		()
Local		(Address)
***.***.***.***:53		(25785/named)
[localhost]:53		(25785/named)
[anywhere]:21		(22069/pure-ftpd)
[anywhere]:22		(25658/sshd)
[localhost]:953		(25785/named)
[anywhere]:25		(18039/master)
[anywhere]:55868		(21858/rpc.statd)
[anywhere]:993		(11650/dovecot)
[anywhere]:995		(11650/dovecot)
[localhost]:10024		(25943/amavisd-new)
[localhost]:10025		(18039/master)
[anywhere]:3306		(25051/mysqld)
[anywhere]:587		(18039/master)
[anywhere]:110		(11650/dovecot)
[localhost]:783		(27222/spamd.pid)
[anywhere]:111		(17778/rpcbind)
[anywhere]:143		(11650/dovecot)
[anywhere]:465		(18039/master)
*:*:*:*::*:53		(25785/named)
*:*:*:*::*:21		(22069/pure-ftpd)
*:*:*:*::*:22		(25658/sshd)
*:*:*:*::*:953		(25785/named)
*:*:*:*::*:25		(18039/master)
*:*:*:*::*:443		(2092/apache2)
*:*:*:*::*:993		(11650/dovecot)
*:*:*:*::*:995		(11650/dovecot)
*:*:*:*::*:59431		(21858/rpc.statd)
*:*:*:*::*:587		(18039/master)
[localhost]10		(11650/dovecot)
*:*:*:*::*:783		(27222/spamd.pid)
[localhost]11		(17778/rpcbind)
[localhost]43		(11650/dovecot)
*:*:*:*::*:80		(2092/apache2)
*:*:*:*::*:465		(18039/master)




##### IPTABLES #####
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
fail2ban-dovecot-pop3imap  tcp  --  [anywhere]/0            [anywhere]/0            multiport dports 110,995,143,993
fail2ban-pureftpd  tcp  --  [anywhere]/0            [anywhere]/0            multiport dports 21
fail2ban-ssh  tcp  --  [anywhere]/0            [anywhere]/0            multiport dports 22

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         

Chain fail2ban-dovecot-pop3imap (1 references)
target     prot opt source               destination         
RETURN     all  --  [anywhere]/0            [anywhere]/0           

Chain fail2ban-pureftpd (1 references)
target     prot opt source               destination         
RETURN     all  --  [anywhere]/0            [anywhere]/0           

Chain fail2ban-ssh (1 references)
target     prot opt source               destination         
RETURN     all  --  [anywhere]/0            [anywhere]/0