Seguramente más de un administrador ha encontrado en las estadísticas de trafico en el servidor de acceso a internet que gran parte del ancho de banda, tasa de download, etc. esta siendo usado para actualizar los ubuntu de escritorio.
Si tenemos espacio en nuestro disco rígido en el servidor lo ideal es crear un repositorio local con lo que obtenemos un uso optimizado de internet y le damos a nuestros usuarios actualizaciones a velocidad full-cache.
fuente
si tenemos nuestro servidor basado en debian es tan sencillo como instalar apt-mirror
#apt.get install apt-mirror
editamos /etc/apt/mirror.list
y cambiamos para que quede algo asi:
############# config ##################
#
set base_path /var/spool/apt-mirror
#
set mirror_path $base_path/mirror
set skel_path $base_path/skel
set var_path $base_path/var
set cleanscript $var_path/clean.sh
set defaultarch i386
set postmirror_script $var_path/postmirror.sh
set run_postmirror 0
set nthreads 20
set _tilde 0
#
############# end config ##############
deb http://archive.ubuntu.com/ubuntu precise main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu precise-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu precise-updates main restricted universe multiverse
#deb http://archive.ubuntu.com/ubuntu precise-proposed main restricted universe multiverse
#deb http://archive.ubuntu.com/ubuntu precise-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu precise main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu precise-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu precise-updates main restricted universe multiverse
#deb-src http://archive.ubuntu.com/ubuntu precise-proposed main restricted universe multiverse
#deb-src http://archive.ubuntu.com/ubuntu precise-backports main restricted universe multiverse
clean http://archive.ubuntu.com/ubuntu
grabamos y ejecutamos apt-mirror
root@champitas:~# apt-mirror
Downloading 84 index files using 20 threads...
Begin time: Wed Aug 8 12:18:46 2012
[20]... [19]... [18]... [17]... [16]... [15]... [14]... [13]... [12]... [11]... [10]... [9]... [8]... [7]... [6]... [5]... [4]... [3]... [2]... [1]... [0]...
End time: Wed Aug 8 12:19:26 2012
Proceed indexes: [SSSPPP]
71.6 MiB will be downloaded into archive.
Downloading 21 archive files using 20 threads...
Begin time: Wed Aug 8 12:19:37 2012
[20]... [19]... [18]... [17]... [16]... [15]... [14]... [13]... [12]... [11]... [10]... [9]... [8]... [7]... [6]... [5]... [4]... [3]... [2]... [1]... [0]...
End time: Wed Aug 8 12:34:18 2012
34.1 MiB in 67 files and 0 directories can be freed.
Run /var/spool/apt-mirror/var/clean.sh for this purpose.
la primera vez se bajaran cerca de 90GB (en la cita se muestra una actualización manual).
Para crear el mirror en un no-debian based linux debemos instalar debootstrap. una breve
guia para hacerlo
creamos un enlace de nuestro mirror a la raiz de documentos de apache
#ln -s /var/spool/apt-mirror/mirror/archive.ubuntu.com/ubuntu /var/www/
finalmente, le pasamos a nuestros usuarios el nuevo sources.list que debera contener algo parecido a esto:
root@champitas:/etc/apt# cat sources.list
# deb cdrom:[Ubuntu 12.04 LTS _Precise Pangolin_ - Release i386 (20120423)]/ precise main restricted
deb http://192.168.31.8/ubuntu/ precise main restricted
deb-src http://192.168.31.8/ubuntu/ precise main restricted
deb http://192.168.31.8/ubuntu/ precise-updates main restricted
deb-src http://192.168.31.8/ubuntu/ precise-updates main restricted
deb http://192.168.31.8/ubuntu/ precise universe
deb-src http://192.168.31.8/ubuntu/ precise universe
deb http://192.168.31.8/ubuntu/ precise-updates universe
deb-src http://192.168.31.8/ubuntu/ precise-updates universe
deb http://192.168.31.8/ubuntu/ precise multiverse
deb-src http://192.168.31.8/ubuntu/ precise multiverse
deb http://192.168.31.8/ubuntu/ precise-updates multiverse
deb-src http://192.168.31.8/ubuntu/ precise-updates multiverse
cambiando la IP privada por la propia o , en caso de tenerlo, por el FQDN
Actualizamos:
root@champitas:~# apt-get update
Ign http://192.168.31.8 precise InRelease
Ign http://192.168.31.8 precise-updates InRelease
Obj http://192.168.31.8 precise Release.gpg
Obj http://192.168.31.8 precise-updates Release.gpg
Obj http://192.168.31.8 precise Release
Obj http://192.168.31.8 precise-updates Release
Obj http://192.168.31.8 precise/main Sources
Obj http://192.168.31.8 precise/restricted Sources
Obj http://192.168.31.8 precise/universe Sources
Obj http://192.168.31.8 precise/multiverse Sources
Obj http://192.168.31.8 precise/main i386 Packages
Obj http://192.168.31.8 precise/restricted i386 Packages
Obj http://192.168.31.8 precise/universe i386 Packages
Obj http://192.168.31.8 precise/multiverse i386 Packages
Ign http://192.168.31.8 precise/main TranslationIndex
Ign http://192.168.31.8 precise/multiverse TranslationIndex
Ign http://192.168.31.8 precise/restricted TranslationIndex
Ign http://192.168.31.8 precise/universe TranslationIndex
Obj http://192.168.31.8 precise-updates/main Sources
Obj http://192.168.31.8 precise-updates/restricted Sources
Obj http://192.168.31.8 precise-updates/universe Sources
Obj http://192.168.31.8 precise-updates/multiverse Sources
Obj http://192.168.31.8 precise-updates/main i386 Packages
Obj http://192.168.31.8 precise-updates/restricted i386 Packages
Obj http://192.168.31.8 precise-updates/universe i386 Packages
Obj http://192.168.31.8 precise-updates/multiverse i386 Packages
Ign http://192.168.31.8 precise-updates/main TranslationIndex
Ign http://192.168.31.8 precise-updates/multiverse TranslationIndex
Ign http://192.168.31.8 precise-updates/restricted TranslationIndex
Ign http://192.168.31.8 precise-updates/universe TranslationIndex
Ign http://192.168.31.8 precise/main Translation-es_ES
Ign http://192.168.31.8 precise/main Translation-es
Ign http://192.168.31.8 precise/main Translation-en
Ign http://192.168.31.8 precise/multiverse Translation-es_ES
Ign http://192.168.31.8 precise/multiverse Translation-es
Ign http://192.168.31.8 precise/multiverse Translation-en
Ign http://192.168.31.8 precise/restricted Translation-es_ES
Ign http://192.168.31.8 precise/restricted Translation-es
Ign http://192.168.31.8 precise/restricted Translation-en
Ign http://192.168.31.8 precise/universe Translation-es_ES
Ign http://192.168.31.8 precise/universe Translation-es
Ign http://192.168.31.8 precise/universe Translation-en
Ign http://192.168.31.8 precise-updates/main Translation-es_ES
Ign http://192.168.31.8 precise-updates/main Translation-es
Ign http://192.168.31.8 precise-updates/main Translation-en
Ign http://192.168.31.8 precise-updates/multiverse Translation-es_ES
Ign http://192.168.31.8 precise-updates/multiverse Translation-es
Ign http://192.168.31.8 precise-updates/multiverse Translation-en
Ign http://192.168.31.8 precise-updates/restricted Translation-es_ES
Ign http://192.168.31.8 precise-updates/restricted Translation-es
Ign http://192.168.31.8 precise-updates/restricted Translation-en
Ign http://192.168.31.8 precise-updates/universe Translation-es_ES
Ign http://192.168.31.8 precise-updates/universe Translation-es
Ign http://192.168.31.8 precise-updates/universe Translation-en
Ign http://linux.dropbox.com precise InRelease
Obj http://linux.dropbox.com precise Release.gpg
Obj http://linux.dropbox.com precise Release
Obj http://linux.dropbox.com precise/main i386 Packages
Ign http://linux.dropbox.com precise/main TranslationIndex
Ign http://linux.dropbox.com precise/main Translation-es_ES
Ign http://linux.dropbox.com precise/main Translation-es
Ign http://linux.dropbox.com precise/main Translation-en
Leyendo lista de paquetes... Hecho