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    Creating Local Repository

    Uploaded by

    Ahmed Ebrahim Mohammed
    By creating a local apt repository using apt-cacher, organizations can [1] reduce bandwidth usage by caching packages locally, [2] speed up install times by downloading packages from the local network instead of the internet, and [3] easily configure client systems by modifying the proxy address instead of repository URLs. Apt-cacher uses much less storage than apt-mirror by only caching packages that are requested and automatically removing old packages. It also downloads each package only once to further reduce bandwidth. Administrators can generate reports on apt-cacher usage and keep cached package files on a local disk to create a makeshift local repository.

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    Attribution Non-Commercial (BY-NC)
    Download as PPTX, PDF, TXT or read online from Scribd

    Creating Local Repository

    Uploaded by

    Ahmed Ebrahim Mohammed
    14 views12 pages
    By creating a local apt repository using apt-cacher, organizations can [1] reduce bandwidth usage by caching packages locally, [2] speed up install times by downloading packages from the local network instead of the internet, and [3] easily configure client systems by modifying the proxy address instead of repository URLs. Apt-cacher uses much less storage than apt-mirror by only caching packages that are requested and automatically removing old packages. It also downloads each package only once to further reduce bandwidth. Administrators can generate reports on apt-cacher usage and keep cached package files on a local disk to create a makeshift local repository.

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    By creating a local apt repository using apt-cacher, organizations can [1] reduce bandwidth usage by caching packages locally, [2] speed up install times by downloading packages from the local network instead of the internet, and [3] easily configure client systems by modifying the proxy address instead of repository URLs. Apt-cacher uses much less storage than apt-mirror by only caching packages that are requested and automatically removing old packages. It also downloads each package only once to further reduce bandwidth. Administrators can generate reports on apt-cacher usage and keep cached package files on a local disk to create a makeshift local repository.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    14 views12 pages

    Creating Local Repository

    Uploaded by

    Ahmed Ebrahim Mohammed
    By creating a local apt repository using apt-cacher, organizations can [1] reduce bandwidth usage by caching packages locally, [2] speed up install times by downloading packages from the local network instead of the internet, and [3] easily configure client systems by modifying the proxy address instead of repository URLs. Apt-cacher uses much less storage than apt-mirror by only caching packages that are requested and automatically removing old packages. It also downloads each package only once to further reduce bandwidth. Administrators can generate reports on apt-cacher usage and keep cached package files on a local disk to create a makeshift local repository.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    of 12

    CREATING LOCAL REPOSITORY

    By:- Ahmed E & Biniam T

    Why Local Repository ?

    Safe Band width once an updated package is downloaded from an official repository, all other machines will download it from a local server.

    Time /fast Uses the maximum speed(bandwidth) of the LAN

    How to configure
    Mirroring (apt-mirror) - a mirror is an exact copy of a data set - provide multiple sources of the same information - providing reliable access to large downloads.

    Cacher (apt-cacher) -Fetch packages that we actually use and cache them for future requests.

    Problems with apt-mirror

    It uses up a lot of space, most of it for packages we will never use It needs just as much space for every additional architecture or release of Ubuntu/Debian Because we don't use majority of the packages apt-mirror downloads, more bandwidth is wasted than necessary It is necessary to modify apt's sources file to force clients to use apt-mirror, this becomes more difficult when some clients use different repositories. Requires installation of a separate web server

    Why apt-cahcher

    It uses fraction of the space, especially since cache is automatically cleansed of old packages that are no longer requested It downloads each package only once, thus reducing bandwidth consumption It reduces download time . Makes it easier to configure clients: instead of changing repository URLs we only change the address of the proxy Single package install, no additional web server needed Minimal server side configuration

    How to
    1,installing apt-cacher sudo apt-get install apt-cacher 2, Configuring apt-cacher - open /etc/apt-cacher/apt-cacher.conf - Activate Apt-Cacher: open /etc/default/aptcacher ,Set AUTOSTART = 1 - Restart Apt-Cacher: sudo /etc/init.d/apt-cacher restart

    contd

    Setting up the LAN clients - edit the file /etc/apt/sources.list on every computer on the network then update. sudo apt-get update

    Automatically update systems every day Create a file called auto-update.sh in /usr/bin: sudo touch /usr/bin/auto-update.sh Example to executed every day at 14:30 add

    30 14 * * * /usr/bin/auto_update.sh > /dev/null

    Contd

    Generating reports - Set the generate_reports directive to 1 in /etc/apt-cacher/apt-cacher.conf. - Check out the reports at: http://local.machine.running.aptcache:3142/report http://10.0.0.156:3142/report

    Keeping the files on a local hard disk


    Go to /var/cache/apt/archives and copy your debian packages to a folder of your choice, for example, /home/<username>/repository/ /home/ahmed/repository/ cd ~/repository and generate a Packages.gz file like this: sudo dpkg-scanpackages . /dev/null | gzip -9c > Packages.gz N.B: Make sure build-essential is installed (sudo aptitude install build-essential) before you run the

    Contd

    Add the following line to your sources.list file (/etc/apt/sources.list) deb file:/home/<username>/repository/ / Reload your package index like this: sudo apt-get update

    This is it !

    Thanks

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