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"

== 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 http://$COUNTRY.archive.ubuntu.com/ubuntu
 chroot /var/lib/vz/template/$NAME

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

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 '
 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

Disable hardware-related configs:
 sed -i.orig -e 's,^#!.*,#!/bin/true,'                        /etc/init.d/ondemand
 sed -i.orig -e 's,\(.* | \)\(sysctl .*\),\1 /bin/true \2,'   /etc/init/procps.conf
 sed -i.orig -e 's,^console output,, ; s,^env INIT_VERBOSE,,' /etc/init/rc.conf
 sed -i.orig -e 's/^\$ModLoad imklog/## \$ModLoad imklog/g'   /etc/rsyslog.conf
   :
 mkdir /root/etc_init_console_tty
 mv /etc/init/console* /etc/init/tty* /root/etc_init_console_tty

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

== 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

== First steps after creation ==

Start and enter:
 vzctl start $ID
 vzctl enter $ID

Install updates:
 apt-get update
 apt-get -y dist-upgrade