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⇤ ← Revision 6 as of 2009-11-01 09:36:31 →
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Editor: FranklinPiat
Comment: add ssmtp
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Editor: ?JeromeAvond
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## If your page gets really long, uncomment this Table of Contents  ## If your page gets really long, uncomment this Table of Contents
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 * Update {{{/etc/hostname}}}   * Update {{{/etc/hostname}}}
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=== Exim ===
Adjust {{{/etc/exim4/update-exim4.conf.conf}}} ({{{hostname=}}}). You need to restart the service.

=== Message Of The Day ===
Adjust {{{/etc/motd}}}. You don't need to restart a service.

=== Cups ===
Adjust {{{/etc/printcap}}} . You need to restart the service.

=== Mailname ===
Adjust {{{/etc/mailname}}}. You don't need to restart the service.

=== Openssh server ===
Adjust {{{/etc/ssh/ssh_host_rsa_key.pub}}} and {{{/etc/ssh/ssh_host_dsa_key.pub}}} ({{{root@hostname at the end}}}). You need to restart the service.
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 ''(to be written)''  ''(to be written)'' there must be others...

 '''Charlie:''' ''It was me who took you. Not the Others...''

== Idea of script to help you on ==
=== Complexe or unusual ancient hostname ===
 #!/bin/bash

 usage() {
  echo "usage : $0 nouveau_nom_hote"
  exit 1
 }

 [ -z $1 ] && usage

 ancien=`hostname`
 nouveau=$1

 grep $ancien /etc/ -rl 2>/dev/null | while read file
 do
   sed s:$ancien:$nouveau:g $file > ${file}.tmp
   mv ${file}.tmp $file
 done

This page explains how to change a system's hostname (i.e rename a computer/server)

Executive summary: hostname(1) isn't enough.

Rename a computer

Core networking

  • Update /etc/hostname

  • Update /etc/hosts, so local address(es) resolves with the new system name.

  • Reload the network configuration. You have two options

    • Reload configuration files
      <!> This will temporarily disconnect your system from the network (ssh usually resists short disconnection) 

      invoke-rc.d hostname.sh start
invoke-rc.d networking force-reload
invoke-rc.d network-manager force-reload

      ToDo: is it useful to reload network-manager?

    • or the lazy way: Restart the system.

Application specific

avahi

Avahi is used to publish (announce) local services. If you tweaked /etc/avahi/* you should run: 

  • invoke-rc.d avahi-daemon force-reload

ssmtp

Ssmtp is a light weight, send-only smtp server.

Adjust /etc/ssmtp/ssmtp.conf (hostname=, etc.). You don't need to restart the service.

Exim

Adjust /etc/exim4/update-exim4.conf.conf (hostname=). You need to restart the service.

Message Of The Day

Adjust /etc/motd. You don't need to restart a service.

Cups

Adjust /etc/printcap . You need to restart the service.

Mailname

Adjust /etc/mailname. You don't need to restart the service.

Openssh server

Adjust /etc/ssh/ssh_host_rsa_key.pub and /etc/ssh/ssh_host_dsa_key.pub (root@hostname at the end). You need to restart the service.

other

  • (to be written) there must be others...

    Charlie: It was me who took you. Not the Others...

Idea of script to help you on

Complexe or unusual ancient hostname

  • #!/bin/bash usage() {
    • echo "usage : $0 nouveau_nom_hote" exit 1
    }

    [ -z $1 ] && usage

    ancien=hostname nouveau=$1

    grep $ancien /etc/ -rl 2>/dev/null | while read file do

    • sed s:$ancien:$nouveau:g $file > ${file}.tmp mv ${file}.tmp $file

    done

See also