Editing Ubuntu Precise template creation

* Based on [[Ubuntu_Trusty_template_creation]].
* HN: Debian 7 (Wheezy).
* Templates: Ubuntu 12.04 (Precise Pangolin) and 14.04 (Trusty Tahr).

== Setup variables ==

Common part:

 ARCH="i386" 
 export COUNTRY="de" 

For 12.04 (Precise Pangolin):

 export DIST="precise" 
 export NAME="ubuntu1204" 
 TMPL="12.04-x86"

For 14.04 (Trusty Tahr):

 export DIST="trusty" 
 export NAME="ubuntu1404"
 TMPL="14.04-x86"

Note:  replace "i386" and "x86" to "amd64", if you want to get 64-bit environment.

== Prepare directory ==

 apt-get -y install debootstrap
 cd /usr/share/debootstrap/scripts && ln -s gutsy trusty && cd -
 debootstrap --arch $ARCH $DIST /var/lib/vz/template/$NAME-$ARCH http://$COUNTRY.archive.ubuntu.com/ubuntu
 chroot /var/lib/vz/template/$NAME-$ARCH

Note: Debootstrap can miss Trusty profile (as in Debian Wheezy), so you should create it manually as seen above.

== Steps in chroot ==

Configure locales:
 locale-gen ru_RU.UTF-8
 locale-gen en_US.UTF-8
 echo 'LANG="en_US.UTF-8"' > /etc/default/locale

Configure packages:
 echo " 
 deb http://$COUNTRY.archive.ubuntu.com/ubuntu $DIST           main restricted universe multiverse
 deb http://$COUNTRY.archive.ubuntu.com/ubuntu $DIST-updates   main restricted universe multiverse
 deb http://$COUNTRY.archive.ubuntu.com/ubuntu $DIST-security  main restricted universe multiverse
 #eb http://$COUNTRY.archive.ubuntu.com/ubuntu $DIST-backports main restricted universe multiverse
 " > /etc/apt/sources.list
   :
 dpkg --remove ubuntu-minimal isc-dhcp-client isc-dhcp-common ntpdate resolvconf
 dpkg --purge  ubuntu-minimal isc-dhcp-client isc-dhcp-common ntpdate resolvconf
   :
 apt-get update
 apt-get -y dist-upgrade

Configure mail system (consider 192.0.2.2 is IP of venet0 on HN, or put here your own SMTP relay if needed):
 mkdir /etc/dma
 echo $NAME > /etc/mailname
 echo '
 # dma-0.0.2010.xx syntax
 SMARTHOST 192.0.2.2
 DBOUNCEPROG dbounce-simple-safecat
 MAILNAMEFILE /etc/mailname
 ' > /etc/dma/dma.conf
   :
 DEBIAN_FRONTEND=noninteractive apt-get -y install --no-install-recommends dma bsd-mailx safecat

'''14.04 note:''' config syntax for dma-0.9 was changed:
 echo '
 # dma-0.9 syntax
 SMARTHOST 192.0.2.2
 MAILNAME /etc/mailname
 ' > /etc/dma/dma.conf

Disable hardware-related configs:
 Disable() {
    local f="/etc/init/$1.conf"
    local o="/etc/init/$1.override"
    test -s "$o" && grep -qw "^manual" "$o" && return
    echo "manual  # DISABLE UNDER OPENVZ" >> "$o"
 }
 Disable console
 Disable console-font
 Disable console-setup
   :
 Disable ondemand
 Disable setvtrgb
   :
 Disable hwclock
 Disable hwclock-save
   :
 Disable ureadahead
 Disable ureadahead-other
   :
 Disable plymouth
 Disable plymouth-log
 Disable plymouth-ready
 Disable plymouth-shutdown
 Disable plymouth-splash
 Disable plymouth-stop
 Disable plymouth-upstart-bridge
   :
 Disable tty2
 Disable tty3
 Disable tty4
 Disable tty5
 Disable tty6
   :
 Disable udev
 Disable udev-fallback-graphics
 Disable udev-finish
 Disable udevmonitor
 Disable udevtrigger
   :
 sed -i.orig -e '/| sysctl / s,$, || :,'                     /etc/init/procps.conf
 sed -i.orig -e 's,^\$ModLoad imklog,## \$ModLoad imklog,g'  /etc/rsyslog.conf

Cleanup and leave chroot:
 apt-get clean
 find /var/cache/apt /var/lib/apt/lists -type f -delete
 exit

== Create template archive ==

 rm -f   /var/lib/vz/template/cache/ubuntu-$TMPL.tar.gz &&
 tar czf /var/lib/vz/template/cache/ubuntu-$TMPL.tar.gz --numeric-owner -C /var/lib/vz/template/$NAME-$ARCH .

== How to create CT from template ==

 ID=123
 vzctl create $ID --ostemplate ubuntu-$TMPL --hostname … --name … --layout simfs
 vzctl set $ID --save --onboot yes --nameserver 192.0.2.2 --ipadd 192.0.2.$ID