Most important - don't forget to bring your card key when you go to the co-lo site!

We're assuming we're simply moving the machine from one IP address to another, and changing it's name at the same time. We are NOT changing the domain, only the server name within the domain. As an example, what I'm doing is moving a machine from a DSL line at my home, to a high-speed co-lo. Different IP.

I'm choosing to change the name as I already have a name for that co-lo address established in DNS. The idea is to minimize the downtime during the move. I have a secondary, newer machine, which has been configured as a twin of the primary, but with the latest software, and a different subdomain name. I'll be moving this secondary to the co-lo, and once it's all happy, then change it over to being the primary, thus minimal interuption.

• If necessary, contact your upstream provider to update your destinations reverse DNS name. Test with the following:
  dig [your ip in reverse].in-addr.arpa
  
• /etc/namedb
  master/domain.hosts file, ensure new IP has A record.
• named.conf: new IP into sections allow-transfer, allow-query
  (And of course restart named.)

• /etc/namedb
  You'll need to pay attention to every file in this dir tree
  named.conf: listen-on needs self IP
  (And of course restart named.)
• /etc/rc.conf ifconfig, default_router, hostname
• /etc/passwd (use vipw) I put my system name into the root entry instead of that stupid "charlie"
• /etc/resolv.conf (nameserver(s) may need to change)
• Sendmail:
  /etc/mail/[system-name].mc
  
  • confDOMAIN_NAME
    
  • DAEMON_OPTIONS(`Port=smtp, Addr=rachis.vintners.net, Name=MTA')
    
  • DAEMON_OPTIONS(`Port=smtps, Addr=rachis.vintners.net, Name=TLSMTA')
    
  • DAEMON_OPTIONS(`Port=587, Addr=63.226.250.178, Name=MSA, M=bh')
    
  /etc/mail/access possibly several
  /etc/mail/aliases possibly several
  /etc/mail/local-host-names possibly several
  /etc/mail/relay-domains possibly several
  Mail server name must match your secure certificate name for TLS to work.
  And don't forget to make [system-name].mc and copy it into place, then restart.
• imap/pop3:
  /usr/local/etc/imapd.conf servername?
  /usr/local/lib/sasl2/Sendmail.conf servername?
  servername: must match your secure certificate name for TLS to work.
• Apache: /usr/local/etc/apache/httpd.conf
/usr/local/etc/apache/httpd.conf/Includes/http-vhosts.conf IP addr for vhosts
  
• ftpd ?
• backup scripts on OTHER machines!!!
• root/bin/get-dup.pl (only if this is a secondary)
• shutdown -h now

list of last-second files to copy to new server as they may be newer:
• /usr/local/etc/mail/spamassassin/local.cf
• mysql backup
• my own personal directory
• mailman list dirs
• weather station dirs
• /var/spool/ (imap email store)

• Relocate and powerup
• Check that you can 'ssh' in, and you're done.