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On the computer

All distributions

Amanda

Change amanda's reference

• edit /etc/amandahosts
• replace the line with the previous hostname by the same one but with the new FQDN (hope it is clear)
• edit /etc/amanda/<config>/disklist
• replace the entries with the old hostname by the new one

Cyrus

TBC

LVM

TODO: develop procedure for renaming the volume group and document here (when / is on LVM as ours normally are, this may require rebuilding the initial RAM disk, re-configuring the boot manager, editing fstab ...).  Maybe useful links: https://we.riseup.net/debian/renaming-a-lvm-root-volume-group, https://bugzilla.redhat.com/show_bug.cgi?id=230190#c17 (RedHat),

LXC

TODO: what is the procedure for renaming an LXC? http://www.bonusbits.com/wiki/HowTo:Rename_LXC_Container

Name resolution

/etc/hosts  If the name change includes a domain name change and the old domain name appears in /etc/hosts for the computer then it must be changed.

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• /etc/aliases  If it is changed, run the newalises command.
• /etc/mailname
• /etc/postfix/header_checks  If the file doesn't exist, create it using the procedure at http://wiki.bluelightav.org/x/PAIW . Do not restart or reload postfix until all files have been updated.   If it is changed, run the postmap command on it, in the /etc/postfix directory.
• /etc/postfix/generic  If it is changed, run the postmap command on it, in the /etc/postfix directory.

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In case there is undelivered mail from the old hostname, if not required it can be deleted using  postsuper -d ALL

Xen

TODO: what is the procedure for renaming a Dom0 (nothing special?) and a DomU (at least the DomU's config file, log and autostart link on the Dom0 include the DomU's FQDN).

Debian

Reference: Debian WIKI page on changing hostname.

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On other computers

Backup systems

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TBC

Backed up on bafi

If the computer is backed up on bafi, either by push from the computer or pull from bafi:

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Not tested (may all be done by the commands above): if running or using any of avahi, CUPS, ejabberd, Exim, /etc/motd, OpenSSH server, ssmtp or sysklogd then read the  Debian WIKI page on changing hostname.

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DNS servers

On master DNS servers which have record(s) for the old name, change the forward zone file and any reverse zone file.  The DNS servers to consider are:

• dns2.bluelightav.org for public network addresses.
• openvpn.bluelightav.org for BL OpenVPN network addresses.
• bafi for Town Hall addresses.

LDAP server

Change the LDAP client's uri

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