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hpr4356 :: Mirror Mirror On The Wall

Lee talks about running a private Ubuntu mirror

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Hosted by Lee on Monday, 2025-04-14 is flagged as Clean and is released under a CC-BY-SA license.
linux, ubuntu, mirror. (Be the first).

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Duration: 00:12:45
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general.

Running a private Ubuntu Mirror

It is possible to set up a local server to keep a synchronized copy of all the Ubuntu packages, allowing later installs of packages for any local machine even in the absence of an internet connection.

To do this a script called apt-mirror can be run on the server.

crontab

0 1 * * * /usr/local/bin/apt-mirror

The location of the mirror is specified in apt-mirror.conf

/etc/apt/apt-mirror.conf

set mirror_path /disk/ftp/Mirror
set cleanup_freq daily
set mirror_verbose yes

The origin servers are specified in mirror.list . It is possible to choose which architectures and Ubuntu releases to fetch as well as whether to fetch just the binary packages or also the sources.

/etc/apt/mirror.list

​
deb http://archive.ubuntu.com/ubuntu noble main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu noble-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu noble-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu noble-backports main restricted universe multiverse
​
deb-i386 http://archive.ubuntu.com/ubuntu noble main restricted universe multiverse
deb-i386 http://security.ubuntu.com/ubuntu noble-security main restricted universe multiverse
deb-i386 http://archive.ubuntu.com/ubuntu noble-updates main restricted universe multiverse
deb-i386 http://archive.ubuntu.com/ubuntu noble-backports main restricted universe multiverse
​
#deb-src http://archive.ubuntu.com/ubuntu noble main restricted universe multiverse
#deb-src http://security.ubuntu.com/ubuntu noble-security main restricted universe multiverse
#deb-src http://archive.ubuntu.com/ubuntu noble-updates main restricted universe multiverse
#deb-src http://archive.ubuntu.com/ubuntu noble-backports main restricted universe multiverse
​
clean http://archive.ubuntu.com/ubuntu

The mirrored packages could be served up to local machines in a number of ways, I am using vsftpd to serve the files via FTP.

/etc/vsftp.conf

anonymous_enable=YES
anon_upload_enable=YES
anon_mkdir_write_enable=YES
dirmessage_enable=YES
xferlog_enable=YES
connect_from_port_20=YES
listen=YES
pam_service_name=vsftpd
seccomp_sandbox=NO
isolate_network=NO
anon_root=/disk/ftp/
no_anon_password=YES
hide_ids=YES
pasv_min_port=40000
pasv_max_port=50000
write_enable=YES

On local machines, the mirror on the server can then be specified as the source for apt to use to retrieve packages.

/etc/apt/sources.list.d/ubuntu.sources

​
Types: deb
URIs: ftp://server/Mirror/mirror/archive.ubuntu.com/ubuntu
Suites: noble noble-updates noble-backports
Components: main universe restricted multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
​
## Ubuntu security updates. Aside from URIs and Suites,
## this should mirror your choices in the previous section.
Types: deb
URIs: ftp://server/Mirror/mirror/security.ubuntu.com/ubuntu
Suites: noble-security
Components: main universe restricted multiverse
Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg



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